Inverter Circuit Diagram

June 02, 2009 By: genius

Power inverter is a very useful device which can convert Low voltage from a DC source to high voltage AC. The most common power inverter is 12V to 240V inverter. Perhaps that is because 12V batteries are common. This type of power inverter usually draws current from a DC battery. This battery should be able to provide a high flow of electric current. Normally lead acid batteries can server this purpose well. This current is then converted to 240V square wave alternative current so that we may empower those electric appliances which work on 240V instead of 12V. Inverter falls in the category of expensive devices so many people don’t buy them even they need them. What if I tell you how to build an inverter yourself?

I remember when I build my first inverter, I was very happy and I invited a lot of friends to see my homemade inverter. I am sure you will feel the same. Before you start building this inverter circuit diagram, I want to mention that this circuit involves 240V and 500W which can be fatal. You should take all security precautions before building this circuit. Preferably use electricity protective gloves and try not to play with the inverter circuit when it is operational. You will need little to medium knowledge of electronics in order to build this circuit. Alright, let us get to work. There are a lot of inverter circuit diagrams available online; some of them are complex and others are low performance. I have researched on a lot of them but in the end, I designed my own inverter circuit which is comparable to any professionally made inverter but still is simple enough for you to try. Here is the inverter circuit diagram:

Inverter Circuit Diagram

Inverter Circuit Diagram

It took me less than $100 to complete this circuit.

You will need the following parts.

There is only one variable resistance in this circuit diagram which is used to adjust frequency of 240V AC output current. You should have a frequency meter to adjust this frequency of 50HZ to 60HZ as per your requirement. Please do not power up any device with your inverter before frequency adjustment because a wrong AC frequency can burn your equipment as well as your inverter.

I have used a two stage regulated power supply to avoid frequency changes with the drop of battery voltage. First stage is 7809 which is a standalone voltage regulator. It converts 12V DC to 9V DC. Then we have used a 22 Ohm resistor and then a zener diode of 8.2V which forces current to stay at 8.2V. The 22 Ohm resistor is there just to aid zener diode. The output frequency of this inverter circuit is square wave so it is not best to power up inductive loads so use it at your own risk. However I do power up fans at home using this inverter and I never had any problems other than a little decrease in fan speed and addition of a little noise. If you have any questions, please use the comment box bellow.

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445 Responses to “Inverter Circuit Diagram”

Comment from Dandy
Time June 9, 2009 at 5:36 am

Thanks for sharing this inverter circuit, can you please tell me which power transistors can I use if TIP35C is not available in my area? Thanks in advance

Comment from genius
Time June 11, 2009 at 4:17 pm

You can use any NPN transistor here which has power range of minimum 100W and 10A. other examples could be D1047, C2581, 2N3055. however TIP35C is certainly better.

Comment from Farasat Hassnain
Time June 21, 2009 at 7:29 pm

In this circuit which transformer will i use please tell her volts and amp.And Capacitor 220uf and Capacitor1uf volt.thanks

Comment from Farasat Hassnain
Time June 22, 2009 at 9:04 am

This inverter is automatic or not…please help me to build this inverter…thanks

Comment from rahul
Time June 24, 2009 at 11:46 am

hello a great thanks…

can this work when the power is off. pls help me…………

Comment from rahul
Time June 24, 2009 at 11:56 am

how to make the input section a rechargable source that we can power up the equipments even when there is no supply….

great thanksss for the circuit

Comment from anthony OGBOLU
Time June 25, 2009 at 3:35 am

i want to know the primary, secondary, and the finally stage of your 3kva inverter circuit dragram for learn.i will be greatfull if you can help me

Comment from genius
Time June 25, 2009 at 7:04 pm

@Farasat Hassnain, you can use a 240v / 12+12 / with a capacity of 40 Amp minimum. Both capacitors should be 25V or above. You can make this inverter automatic using a double relay. I will post an automatic version of this inverter soon.
@Rahul, yes this inverter can work on 12V Battery. You can use any 12V recharge circuit to recharge the battery. Recharge circuits are always separate from inverter part.
@Anthony, In first stage, The CD4047 acts are an accelerator and outputs signal using 470OHM resistors to the D313 transistors, then in second stage these transistors amplify the frequency signal to drive the main transistors and then transfer the signal on the Bases of main transistors using 22OHM 2W resistors and then in the third and last stage, the Main transistors starts to switch as per the given frequency signal . These high current pulses causes the transformer to generate 240V square wave output. I hope that explains every thing, if you have more questions then let me know. 🙂

Comment from Ahmed
Time July 4, 2009 at 12:40 am

I want to know that how can we make Transformer 12+12/240 (500W)what is size of its central pole, primary and secondary standard wire guage

Comment from Ezekiel
Time July 4, 2009 at 8:36 pm

Please I need a version that uses 2 relays to make the Inverter automatics, how soon can I have it please.

Comment from Anand
Time July 5, 2009 at 7:12 am

If use one 40W light and one fan, how long the battery will last?

Comment from genius
Time July 5, 2009 at 4:36 pm

@Anand, this depends upon which battery you are using. Suppose if you are using a 12V 115AH battery then it will last from 5 to 7 hours depending upon the quality of battery. the calculation is assuming that you are using a 40W tube light and a 120 Watt Ceiling Fan.

Comment from AJAYI
Time July 7, 2009 at 4:32 pm

Kindly send the circult to email box ,the on your web is legible at all.

Comment from Ajur
Time July 8, 2009 at 6:54 pm

Thanks for giving a wonder full information. but i need some more information regarding the transformer as ya have used 12+12/240 transformer. so plz do reply to this.

Comment from Dave Hotrum
Time July 10, 2009 at 9:27 am

I am building an electric car. I have a 10 hp 3ph motor. The inverter is out of my price range. What do I need to do to change this diagram to work on my car? Thanks for everyones help.

Comment from charles chuks ofili
Time July 10, 2009 at 1:34 pm

i think i found this site very intresting, i got what i was looking for though it not exactly what i wanted but this gave me a clue thanks

Comment from sandeep
Time July 13, 2009 at 3:04 pm

my inverter is of microtech company.iwrongly connected the wires from inverter to the battery.now it is not working .please tell what should i do & if there any big fault

Comment from genius
Time July 14, 2009 at 2:17 pm

@Sandeep, It is impossible to say any thing about your inverter unless i see it. You better contact the person from which you purchased it.

Comment from genius
Time July 14, 2009 at 2:31 pm

@Dave Hotrum, It is not a good idea to use an inverter in such high current applications. You will lose a lot of current during the voltage conversion by the inverter itself. It is impossible to build a 100 percent efficient inverter. almost 25% of the energy will be lost even if you get the most efficient and expensive inverter. I would suggest that you should find 12V or 24V 10HP motor for this purpose. I am sure you will find one if you search for it. I have used one in a machine I made earlier. A 12v or 24v motor will give you more power and running time due the the fact that it will fully utilize the available current directly from the batteries. Let me know if you still have questions. Thank:)

Comment from genius
Time July 14, 2009 at 2:36 pm

@Ajur, You can use a regular 240 to 12+12 transformer. No need to find a special one. Just keep in your mind the watts you are going to need. For example, if you are building a 500W inverter, you should arrange a transformer capable of dealing with 500W (42A X 12V = 504VA(W)) your transformer should be capable of giving 42A on 12V and 21A on 24V.

Comment from Asim
Time July 19, 2009 at 2:45 pm

your inverter circuit is very simple and easy to essemble.I have face some difficulties during making UPS.
1.I can’t anderstand the direction of (IC7809) that the collector of 7809 conect to battry side or to the 22(1w) resistance.
2.If the Transistors TIP35C is not available what is its alternate?
plaese send you effective suggestion.
I shall be very thankful for this.Thankyou

Comment from Asim
Time July 19, 2009 at 6:04 pm

hellow!Your inverter diagram is is very easy and efficient.This is a good wook.
I have face some problems during essembling this inverter and need your help.I hope that i will complete my inverter from your gainful opinion.
1.I can’t anderstand the direction of (IC7809) either his collector connect to battry or 22(1w) resistance.
2.If the Transistors TIP35C is not available what is its alternate.
Plaese send me your opinion about above problems as soon as posible.I shall be very thankfull for this.Thankyou

Comment from Asim
Time July 20, 2009 at 4:32 pm

can i use IRf150 in place of Transistors TIP35C.what is your opinion?
please describe your opinion as soon as posible

Comment from muthu
Time July 22, 2009 at 1:16 pm

in this 500 watts inverter how much amps in battery please tell me

Comment from genius
Time July 22, 2009 at 4:58 pm

@muthu. For 500 Watts inverter, it is recommended to use minimum 85 AMP battery. 140AMP or 200AMP will give you more backup time and more balanced power.

Comment from genius
Time July 22, 2009 at 5:29 pm

@Asim. You can use D1047, C2581, 2N3055 or any other NPN transistor with power rating of 10A 100W or above with 45V or above value.

Comment from muthu
Time July 22, 2009 at 5:50 pm

CAN I GET VARIABLE RESISTER 10K,CAPACITOR1uf&220uf what is value of volts

Comment from kayode
Time July 24, 2009 at 4:54 pm

pls sir could u make ur circuit more detailed

Comment from Asim
Time July 25, 2009 at 9:04 pm

Hi genious!I have one more problem.
In your inverter diagram there is no led lite to indicate whether the UPS is in working position,chargeing position or trip.
Please give your gainful opinion.
Plaese told from where i give connection to led lights

Comment from Zaid
Time July 28, 2009 at 12:02 pm

hellow gnious!
I want to know that either this circuit can charge the battry or not and is this inverter is automatic or not if not plaese post the automatic inverter daigram soon.
I shall be very thankful for this

Comment from ruel
Time July 30, 2009 at 9:10 pm

thanks for sharing your idea..
i am planning to build an inverter using your circuit..
i hope you will guide me building one.
thanks a lot..

Comment from keskin
Time July 31, 2009 at 11:49 am

hi genius, thank you for circuit. i have few questions:
– could you tell me the direction of the two capacitors? Which side is (+)?
– what is the pin connections of 7809?
– what kind of devices can we run if we use a lower-powered transformer, such as 200 W?
(this is an urgent case. Please help me as soon as possible)

Comment from Jonathan
Time August 5, 2009 at 12:58 pm

hi genius pls can i no the volt of the capacitor1uf and 220uf

Comment from oluwafemi
Time August 8, 2009 at 12:12 pm

thank for sharing your idea..
iam planning to build an inverter using your circuit,but can i us a IRF150N transistor in place of TIP35C transisor.
please i need answer to this question as soon as posible.
Thanks

Comment from lokesh
Time August 8, 2009 at 6:22 pm

6v to 40w inverter circuit

Comment from John
Time August 13, 2009 at 1:54 pm

Hi & thanks for sharing your idea with us. I assume that I can use this same plan to build a 3000+ watt inverter but would obviously need to change the values and sizes of the components. Can you please advise me accordingly?
Thank you again for your generosity,
John

Comment from samson jimoh
Time August 14, 2009 at 12:49 pm

hello sir, thanks for sharing your idea on

your inverter very intresting.can i get another circuit that can up to 3kv i will be very happy if i can get it
thanks,
my name is samson jimoh my email is samson_jimoh@yahoo.com

Comment from Tunde
Time August 19, 2009 at 4:02 pm

I like ur concept, but i want to know if i can wind the transformer my self and if i can, how

Comment from Darlington
Time August 19, 2009 at 6:03 pm

Hi guys, thank you so much for the inverter circuit diagram for 500w. It works so well. Now i have a question, however, because this one produces square wave, can i get one that gives sine wave?. If there is please sent me even via email. Thanks.

Comment from Casper
Time August 23, 2009 at 12:03 am

Still having a problem understanding the 7809 polarity in this curcuit. I have now placed the 7809 “outside” the curcuit to overcome this problem. The zener clamp shunt the 9V output down to 8.2 volt and supply the CD4047. Is my approch ok doing this? Any ideas?

Comment from Ratnadeep
Time August 25, 2009 at 11:06 pm

If i want to use this inverter with acid cell what should be the “VA” of that battery?

Comment from genius
Time August 26, 2009 at 7:07 pm

@Ratnadeep any thing over 100VA will be good. Please select one Depending upon the your load and the backup time.the more the better.
@Casper, 7809 is actually placed there to decrease the differential load on the 8.2V zener diod. You can even skip the 7809 entirely and can place an extra 22OHM 1 watt resister in place of 7809, the 8.2V zener will automatcially reduce the voltage to 8.2 but it is not recommended though.
@Darlington, i will try my best to post a self tested sine wave circuit as well as soon as possible.
@Tunde, alright i will try to post a tutorial on how to wind a transformer for this inverter circuit as well.
@samson, you can use same circuit for 3KV you only need to rewind the transformer for appropriate voltage. For the power transistors number, just divide your power requirement by 100 and then use that number of TIP35c Transistors on both sides. For example, if your power output is 2000W, just divide it by 100 which is equal to (2000/100) =20 so 20 TIP35C on each side.

Comment from dams
Time August 28, 2009 at 5:09 pm

i need more circuit diagrams in my mail 4 better construction. i really love the provided circuit diagram.

Comment from Ray Kompe
Time September 2, 2009 at 3:24 am

Hi Genius, thanks for your article. You have helped me nut out how an inverter works. Can you tell me the practical advantages of a sinewave inverter as opposed to a “dirty” modified square wave on?. Will the latter cause over-heating of capacitors in appliances that they are connected to? Will they cause any damage and if they do, in what way?

Comment from hakeem
Time September 3, 2009 at 3:51 pm

Thanks a million
Will get back to you after building it

Comment from johnkennedy
Time September 4, 2009 at 6:15 am

1st ,how can i use FET in place of power transistors?
2nd; how can an inverter work when the battery is diconected after the first suppy.pls help me out.

Comment from Austyno
Time September 4, 2009 at 9:53 am

please i am a student and i ant to construct an inverter in my summer project,i luv your diagram but i am confused on how to connect the TIP transistors can you draw the connections for me through my email; austyn_1@hotail.com i will be pleased.

Comment from Austyno
Time September 4, 2009 at 10:05 am

please how can i wind the transformer to b used and how can the battery be charged .please can you post it to my mail; austyn_1@hotmail.com

Comment from janmuhammad
Time September 17, 2009 at 10:11 am

please how can i wind the tarnsformer to be used can the battery charged.can you post it my mail
janmuhammad11@live.com thanks

Comment from Rudresh
Time September 17, 2009 at 2:35 pm

Thanx for the ckt.
Could you tell the polaritys of 2 capacitors?
CD 4047 is not having connected – ve terminal in the ckt.
Could you please clarify.

Comment from miki
Time September 19, 2009 at 4:28 am

how do u get make a 24volt inverter from a 12volt..what is really important i should look into

Comment from Anicet Laurent
Time September 20, 2009 at 3:47 pm

Dear,Si!
I have used power fets 2SK2233 as power transistors. 4 Fets managed to drive the load of 600W. My problem is on how can I change the waves to Sinewve?
Anicet H. Laurent,P.O.Box 5111 Mwanza,Tanzania.
hishakiye@hotmail.com

Comment from John
Time September 28, 2009 at 12:15 am

I have seen what you did,it`s very good,but can you help me with the desing and construction of a unit inverter amplifier in a follow up state.thanks

Comment from adeola
Time September 29, 2009 at 1:20 pm

please,i need all the neccessary information on inverter circult diagram.

Comment from Ratnadeep
Time October 1, 2009 at 10:48 am

hi, i am willing to do ur ckt. but i can not understand that where is the ground portion of ic CD4047. Another problem is that the “0” volt terminal of transformer connected to the positive end of Battery? is it true plz tell me.

Comment from kelvin chibale
Time October 9, 2009 at 4:47 pm

Is it possible to find a system where the inverter in retain charges the battery?

Comment from daniel
Time October 12, 2009 at 3:40 am

plz i need the conection the transistors,and the exertly voltage of the capacitors, can this inverter power a televition and 5x of 100w bulbs?
soon to here from you throug my mail plz.

Comment from sara
Time October 13, 2009 at 2:17 pm

i want to design a small scale wind power lighting system. Is this circuit is applicable to complete my design. The wind generator connected to 12V battery and than to his circuit. Is it possible?

Comment from engel
Time October 14, 2009 at 8:07 pm

how to wound transformer for this
the 12v wound first?240v as sec?

Comment from JASTICE E. NATHANIEL
Time October 20, 2009 at 5:10 pm

I thank for your circuit of inverter so may you send for me circuit diagram of pure sine wave inverter with power of 3000watts or 4000watts.

Comment from sara
Time October 20, 2009 at 5:35 pm

what are the other components can be used to replace CD4047

Comment from kelvin okeyson
Time October 22, 2009 at 8:47 pm

i thank you for the inverter circuit,can i use thes inverter to power up to 100W bulbX5 and one television

Comment from murugan
Time November 2, 2009 at 11:21 am

give the pin details of ic 7809 and how can charging the battery give the circuit.

Comment from Shane
Time November 2, 2009 at 1:47 pm

Hey,
Is there any possiblilty you could tell me what the diffrence is to sine wave and just square wave? also could you send me an automatic version on which i could just plug into say a car socket and run things off?

if you could send it to my email : ironhockey_player@hotmail.com that would be great or just on here as ill check this regulary.

Thanks

Comment from genius
Time November 5, 2009 at 6:16 pm

@Ray Kompe under my experience, modified sine wave and pure sine wave inverters are almost identical. However modified sine wave inverters cause a little ripple in poorly filtered power supplies, secondly, modified sine wave inverters has less power conversion ratio when compared to pure sine wave. Square wave inverters like this one are thought to be a little harmful for conductive load as well as some digital loads but practically, I think digital powers supplies can easily handle square wave. However conductive load like motors can suffer from low starting surge or heat up under heavy load.
@JanMuhammad, @Johnkennedy, kelvin chibale Inverter is not intended to convert to backup automatically, or to charge battery automatically, you are probably looking for a UPS circuit diagram. I will soon upload one, Please keep visiting.
@Austyno if you hold a TIP35C transistor with its 3 pins upwards and with the front side towards you, the most left side pin is Emitter, the center one is collector and the right one is Base.
@Anicet Laurent @, JASTICE E. NATHANIEL You cannot convert this circuit into sine wave that easily. Right now there are various modified sine wave circuits are available but I am trying to built a simple one. Once done, I will post it here. Please keep visiting.
@Ratnadeep Yes, the center loop or “0” volt terminal of the transformer will be connected to the positive end of the battery.
@Daniel, @Kelvin Okeyson yes this inverter can power up the load depending upon the transformer and the power transistors you use. Please read the article again, you will find the info you want.
@Sara Yes this inverter can server your purpose of 12V to 240V conversion using wind power. And for your second question, CD4047 is a common Integrated Circuit (IC) and can be easily found in almost any electronics market in the world. I am afraid it cannot be replaced with any other IC.
@engel, you can use a standard 12V+12V / 240V transformer if you cannot wind it.
@murugun Please read this article to know about 7809 pins http://www.researchcell.com/general/7809-pin-and-circuit-diagram/
@Shane, I will soon post and article about sine wave, modified sine wave and square wave due to the fact that a lot of people request it. Secondly for you can attach this circuit to your car battery. Just place a high power switch on the 12V positive input. The car automatically charges your battery whenever you start it. However if you don’t often drive then your car battery might get drained due to lack of charging. Try to balance your driving time and your inverter usage. The more you drive, the more battery is charged.

Comment from aiioe
Time November 10, 2009 at 2:41 pm

Thanks. Good day, i saw your project kudos to you. Sir, can i use this inverter made to power television, DVD,and radio. Also, how can i continue developing this inverter for sales and even trained people with it.How can i make inverter with 24V input to give 240V output, how can i reduce any noise that might result due to the construction, those components used in your own how will i upgrade their value to suit my construction.

Comment from seun.1
Time November 12, 2009 at 2:57 pm

can i use irf44 phet in place of tip35c transistor

Comment from seun.1
Time November 12, 2009 at 3:03 pm

can u forward 2000w inverter circuit to my mail box,use phet

Comment from ATTA ITOPA
Time November 12, 2009 at 7:13 pm

hi, nice to see your work. i want to make an enquiry about the circuit diagram. how can i know the points of connections at any point.i mean how to differenciate between connected points and the unconected points in the circuit diagram:.pls reply me to this email address.call4atta@yahoo.com. thanks

Comment from Wenceslas
Time November 21, 2009 at 2:33 am

I’m very keen to build this inverter after unsuccessful previous attempts prior to your circuit diagram. I wonder if you can email a clearer circuit diagram. The one you have provided less legible.

Regards

Wenceslas

Comment from Ahmad nawaz
Time November 23, 2009 at 11:20 am

Aslam-o-alakum
i have used this circuit and found very good result.
but i have a problem in the circuit,that on the inverter the fan speed is not satisfied or the fan speed is low on the inverter.plz sove my two problems about the circuit.
1-if i use the 220nF capacitor then what happen?
2-if i use the irf 150N replacing the npn transistors,so what is new change in the circuit.

Comment from Darlington
Time November 24, 2009 at 8:41 pm

Hi genius, i greet you. Just to remind you that you promised to send me your own tested sine wave inverter circuit diagram. Please, post it to this email address together with the automatic relay controlled circuit, darlington_isalano@yahoo.com

Comment from genius
Time November 27, 2009 at 9:42 pm

@Ahmad Nawaz, my friend, slow fan speeds can be due to two reasons,
1. Inverter Frequency is not 60Hz, you can use the variable to adjust inverter frequency. It is better to get a frequency meter before athttp://www.researchcell.com/wp-admin/edit-comments.php#comments-formtempting this. However you can also put only a fan on your inverter and then adjust the variable till you get the required speed.
2. You can add 10% extra turns on the output side (240V) of your transformer.
I personally think you dont need to attempt the second method, you probably only need to adjust inverter frequency.
Secondly, yes you can use IRF as well but it is a good idea to ground a 10K resister from the bases of IRF150N. However I have tested TIP35C with this circuit not IRFs

Comment from francesco
Time November 29, 2009 at 11:12 pm

salve,
posso utilizzare un IRFP150N al posto del tip35c??? la prego risp

Comment from fatrian
Time December 3, 2009 at 8:46 am

Hi genius,,
I have tried to built this inverter, but it didn’t work properly because the output only 30 V. Can you email me a clearer circuit diagram? Especially for IC 7809 (7809 pic in your web is’nt exist)

Comment from gaurav
Time December 5, 2009 at 3:43 pm

i want to know that if i will give supply of Dc 12v current by an dyanemo,it will be work?

Comment from jeffreywong
Time December 9, 2009 at 7:44 am

Im building a 12-240V, 200w inverter. The problem i face is the current using in 12V side is around 20A. The normal transformer cant wintstand so high current. Could u tell me how ca i build a 200w transformer?
OR
how can i power up to 500w output without using 500W transformer?

THanks…

Comment from Raphael O. Taiwo
Time December 10, 2009 at 12:35 am

You are doing a great work at researchcell.com. I have been searching the Net for something like your posting (about inverter) for a long time. I live in an area where power failure is the rule rather than the exception. Tired of gas-consuming and noise-making generators, I made up my mind to find a better means of power generation. I am certain your ‘tutorial’ will help me a lot in realizing my aim. I aim to build the inverter, connect it to a step-up transformer – say 2kv-5kv transformer, using a car-battery as the power source. From the output of the transformer, I want to recharge the battery, using a separate battery-charge. Please, what do you say to this?

Comment from Khalid Syal
Time December 17, 2009 at 11:29 pm

i have complete made this circuit with charging battery with battery leval during electict city power off and suported computer supply no brak.

Comment from aditya.boal
Time January 7, 2010 at 8:48 pm

what is the voltage value of 1uf and 220uf capacitor here

Comment from vinay
Time January 9, 2010 at 12:21 pm

Hello!!!!
I need to build an inverter which should be possible to build within in 10 days, so please guide me to build a best inverter. Please reply as soon as possible to my mail

Comment from Vinay
Time January 9, 2010 at 12:55 pm

Hello!!!!
Me n some of my friends willing to do an inverter which should be completed with in 10 days which should be used for lighting up of 4 to 5 cfl lamps. So please reply to my mail as soon as possible. Please help, we need ur guidance

Comment from allan
Time January 17, 2010 at 11:40 am

sir,
it is very informative..
can you please explain every components jobs in step by step?with voltage drops of each?
Godspeed!!

Comment from allan
Time January 17, 2010 at 12:06 pm

sir,
what is the formula for computing the transformer wattage base on your ckt?…
from choosing your battery to match the load?
pls give us also the formula on how the 115ah battery can sustain 60w bulb?
more power

Comment from Darlington
Time January 17, 2010 at 6:57 pm

Hi genius,thanks for your commitment in assisting us
with technical information, but i have an issue, your soon is always taking centuries. You promised to upload a UPS schematic diagram and an automatic relay controled inverter, i have been waiting since August in vain. Is that you dont have them ready? let us know so that we can patiently wait. Thanks.

Comment from Darlington
Time January 17, 2010 at 6:58 pm

Hi genius,thanks for your commitment in assisting us
with technical information, but i have an issue, your soon is always taking centuries. You promised to upload a UPS schematic diagram and an automatic relay controled inverter, i have been waiting since August 2009 in vain. Is that you dont have them ready? let us know so that we can patiently wait. Thanks.

Comment from Akbar
Time January 18, 2010 at 10:08 pm

It’s a Square wave inverter, but I need a pure sine wave inverter, Please Tell me about pure sine wave inverter circuit diagram.

Comment from schupp
Time January 21, 2010 at 5:48 am

can this power an el wier

Comment from rodolf
Time January 22, 2010 at 10:15 am

hi,
can this inverter power up the aircondition?

Comment from Muhammad Muzammel
Time January 22, 2010 at 1:08 pm

Its a nice circiut. Can you tell me which pin of 7809 connected to 22 ohm resister and which pin is connected directly to CD 4047.

Comment from Bharat
Time January 22, 2010 at 7:42 pm

How do I increase the input of the inverter from 12 volts to 28 volts?

Comment from danish
Time January 25, 2010 at 11:45 pm

my qus is
can i use regulater LM2577 for transformer ??

Comment from kaluya moses
Time January 26, 2010 at 2:10 pm

Hi man thanks for the wonderful knowledge and being generous to every body about power problems.
my comment about this circuit is that (1) it is small and clear am going to try to build it.
my request is please!! degsin for us an auto charger baterry 12v dc which can charge 200Ah baterry thanks.

Comment from kaluya moses
Time January 26, 2010 at 2:19 pm

my second request is that please, if you can, try to put much effort on a pure sine wave oscillator/inverter i will be very grateful if my request is considered.

Comment from oscar pappoe
Time January 26, 2010 at 10:42 pm

please can you kindly tell me the functions of the various components in the diagram

Comment from Lawrence
Time January 28, 2010 at 4:43 pm

Pls i need a 40kva inverter circuit for my school project. I’ll be very grateful if u can help me with it.

Comment from venkat
Time January 29, 2010 at 1:10 pm

TIP 35 C transistor 2 is seeing remaining 4 transistor where will connecting.pls telling.
thank you
venkat

Comment from ngaya philipo
Time February 3, 2010 at 8:40 pm

thanks for your improvement on your technology of inverter.but Iwant to know the characteristics of inverter parts

Comment from ankit vashisht
Time February 5, 2010 at 4:34 pm

hi
this one is the good ckt can u plz give me the correct pin position of 7809 ic
nd also how could i make the transformer

can u kindly mail the details of this ckt on my id thanking you in anticipation

ankitvashishtece@gmail.com

Comment from Nik
Time February 8, 2010 at 12:56 pm

hi genius,

I was wondering, the 2 sets of 6 parallel power transistors, im not sure how the connection looks like. could u help me out with this?thanks alot

Comment from Uzair Amir
Time February 9, 2010 at 9:03 pm

Hello sir
thank you for sharing such a simple circuit i am going to make this circuit in a day or two & hope that i will get the expected results.
Thank you so much once again, please keep sharing such useful & practical circuits..

Comment from Uzair Amir
Time February 9, 2010 at 9:05 pm

@ Mr.Jan Mohammad
bhai did u get the circuit which u have asked in this forum?for which u have given ur email id?

Comment from Mr Mbele
Time February 10, 2010 at 7:20 pm

Hello sir
I ask for help on alternative transistors that may be used instead of Transistor D313 as they have been used in your inverter circuit

Comment from Bulu shadangi
Time February 10, 2010 at 9:02 pm

Hell sir

Thank you a lot for such a eassy circuit I,will try to make it .pl.I ned a 5KVA circuit digram.Thaks again.

Comment from mike
Time February 11, 2010 at 12:47 pm

Hello sir/madam i would like to ask some few questions concerning to this circuit diagram(inverter). My questions are: – what are the demand for a product(number of units)?
-who is the end-user?
-what are the need of end-user?
-product reliability?
-cost of manufacturing?
-price of unity?
-maintanance of functionality?
I will appreciate it if you will be able to help me, as did by sharing such a simple circuit diagram. My concern is that i like to know more about this project.

Comment from dapi
Time February 11, 2010 at 1:02 pm

hi genius…
i need ur help,
can u send me overall inverter proses.
and result details of your inverter.

Comment from farooq
Time February 25, 2010 at 5:48 pm

hi !
i am a student of BSEE and my final year project is on micro-controller based pure sine wave USP !
can i have ur help sir ?
my ID is Goodluckyou_maaz@hotmail.com
regards

Comment from omoyoloye seyinde
Time March 2, 2010 at 2:59 am

hi wise one,
can you connect me to deep cycle battery manufacturers cos l need it in large quantity.l have a working inverter.

Comment from shakil
Time March 3, 2010 at 2:38 am

hello Mr.
How are you. Already I made a Inverter of 500 watt. I used ic 3525 for oscillation & IRFZ44N 4+4=8 piece & transformer winding primary 12gaze and secondary 21gaze. It’s output Volt 230V& Hz 50. Inverter is running but two problems. This problem is fan moving slowly and create noise.
So please tell me how can I solve this problem. I want to know this solution as soon as possible.

Comment from SAMANTHA
Time March 3, 2010 at 9:29 pm

Dear Genius,
Can i replace TIP 35C with GT50 J101.

Comment from ajewole victor
Time March 4, 2010 at 4:24 pm

how many milliampere makes watt

Comment from jayadev
Time March 4, 2010 at 9:26 pm

hi,ginious,i want make 3-ph voltage source inverter for controlling 3-ph induction motor,can u help me ,please,thank u.

Comment from Anderson
Time March 8, 2010 at 11:05 am

Kindly requesting for simple pure sine wave inverter circuit.

Comment from Kaleem
Time March 9, 2010 at 7:17 am

Hi sir if we use 24 power transistor 2n3055 each contain 12 transistor in parallal and we connect them 220 ohm 5 watt resistor i think that power will be batter??????? m i ri8

Comment from polash
Time March 10, 2010 at 6:19 pm

i want only 50hz inverter circuit diagram. please send my e-mail “add-szpolash@yahoo.con”

Comment from k,venkatesh eee
Time March 13, 2010 at 8:09 am

it is possible to lighting the florescent lamps and EFL bulbs etc?

Comment from k,venkatesh eee
Time March 13, 2010 at 8:15 am

it is possible to power 40w florescent lamps and CEL lamps etc

Comment from AUGUSTINE
Time March 16, 2010 at 7:14 pm

Goodday sir,please I will be glad to get more information on HOW TO CONNECT THE 12 TIP35C TRANSISTORS IN PARALLEL and to DETECT THE EMMITER,BASE AND COLLECTOR TERMINALS OF THE TRANSISTORS.

Comment from from cozzy.
Time March 18, 2010 at 7:34 pm

since Cmos Ics is affected by electrostatic charges is their any other alternative ICs rather than CD4047

Comment from Ali
Time March 20, 2010 at 12:41 pm

hello, should i give the output of the 7809 to positive end of the zener diode or to the 22ohm resistor?plz give the pin no. of the 7809. and the polarity of the capacitors. thanks in advance

Comment from k.venkatesh
Time March 20, 2010 at 8:12 pm

I have purchased 10 amps transformer with other ratings specified by you. can I use that?

Comment from Rajsekhar
Time March 25, 2010 at 1:09 am

Sir,
One of my friends told me that a 40Amp 12-0-12/240V Transformar would cost Rs.3000! Again to charge such high capacity battery will need another high capacity charger transformar. Again the highcapacity battery will cost more than 5000/-. Please publish approx prices of main parts involved.

Comment from Rajsekhar
Time March 25, 2010 at 1:14 am

Sir,
Do we need two wires at the output (240v ac end)?

Comment from Izhan
Time March 25, 2010 at 9:52 am

Hello sir , i want to drive 3 phase motor with 24v solar pannel & i need circuit daigram of inverter wil u plz help me .

Comment from omosh
Time March 25, 2010 at 9:35 pm

thanx 4 the circuit.what if i use mosfets irf 150n 4pcs instead of TIP35c/ please reply in my email adress if possible

Comment from jimoh asimiyu
Time March 26, 2010 at 4:38 pm

thank for sharing your idea..
iam planning to build an inverter using your circuit,but i find it difficult to get TIP35C transisor can i us a IRF150N transistor in place of TIP35C transisor. and send me detail on how to connect it parallel.
please i need answer to this question as soon as posible.jimohtech@gmail.com
Thanks

Comment from Fulbert
Time March 27, 2010 at 12:22 am

Hi genius, thanks for your inverter circuit..

i have a question here, as we know that the used for parallel transistors is to get more load power, do u have a theoretical calculation for this parallel transistors? i really need this formula to complete my final year project.. thanks in advance..

Comment from Tolulope
Time March 27, 2010 at 4:49 am

Nice work keep it up.
Pls i would like the sine wave version, if you have, kindly send it to my email.
Thank you.

Comment from Sam
Time March 27, 2010 at 4:58 pm

Thanks, it is a great project specially for countries of Blackouts and Brownouts. In our country we can have locally build inverters but without power correction factor or overload etc. and they are pure square wave & costly. In my view Modified Sign Wave inverters are better and must cheaper and easier as compared to a pure sign wave. We all will benefit from a Modified sign wave inverter design. If possible please do include overload protection. Thanks again

Comment from sonali
Time March 27, 2010 at 5:34 pm

pls send me the detail information about micro inverter using IC CD4047 and MOSFETS

Comment from ray aseko
Time March 30, 2010 at 2:08 am

pls sir can you send detail circiut diagram of 5000watts to e-mail. i really appeciate your effort toward this program.

Comment from Akintayo
Time April 2, 2010 at 4:43 am

This is a good job. Genius you have really done well.can we get sine wave cct here too?

Comment from LAKHWINDER SINGH
Time April 3, 2010 at 9:04 am

Hi & thanks for sharing your idea with us. I assume that I can use this same plan to build a 1000+ watt inverter but would obviously need to change the values and sizes of the components. Can you please advise me accordingly?
Thank you again for your generosity,

Comment from faizan
Time April 6, 2010 at 10:10 pm

hi…thanksss for the circuit … plz tell me can we use ic against 12 tip35c transistor ..if so than tell me the ic name….and also can i use a transformer which has vp=17.2 and vs=240..plz replyy sooon …

Comment from jimoh asimiyu
Time April 9, 2010 at 3:46 pm

hELLO!
thanks for your commitment in assisting us
with technical information, but i have an issue, I always taking centuries. You promised to upload a UPS schematic diagram and an automatic relay controled inverter, i have been waiting since June 2009 in vain. Is that you don’t have them ready? let us know so that we can patiently wait. Thanks.
reply to jimohtech@gmail.com

Comment from Raj Kanungoe
Time April 15, 2010 at 8:08 pm

First of all thank u very much for such a wonderful circuit…
1.Sir, I’m planning to use it for only 25Wx4=100W CFLs. Kindly suggest me, what should be the battery current ?
2. May I use SMF batteries for the input power.
3. If you have already bought the “automatic inverter” to light, kindly send me the circuit in “rkanungoe@gmail.com” or mention the referrence link.
Once again thank you.

Comment from leo
Time April 17, 2010 at 11:50 am

gud morning mister genius,i have finished your design inverter, why is the tip35c connectors blown when i conect it to the trnsformer,pleasse help me finished your inverter

Comment from Majid Ahmed
Time April 17, 2010 at 2:05 pm

hello…
can any one send me the complete circuit diagram and the connection information so that i can complete my Project…
thanks

Comment from dominic
Time April 18, 2010 at 7:01 pm

thanks for ur diagram i’m impres. pl i like to build one inverter, but i have 48v trasformer at hand. pl can it work with the diagram above? if no pl help by sending me any diagram that can work with it. thanks again.

Comment from drubo from bd
Time April 19, 2010 at 3:33 pm

i am a very little knwoing boy and love electronics and sadly there is no good machanic in my area or even in 30 miles please help me for the following.

1.i have a 600 va ups can i use the transformer for the inverter?
i have 2 12v12a batteries connected in the ups for 24amp12v is that enough for this inverter?
thank you .

Comment from Oguntolu Olusegun
Time April 20, 2010 at 12:03 am

I have been looking for this circuit diagramme and a write up for my project in school, can you please send it to my e-mail please.Thanks

Comment from Shilp
Time April 20, 2010 at 12:50 am

can i use a a air blower using this

Comment from noman
Time April 22, 2010 at 8:33 pm

sir i need a simple diagram through which i will be able to make a u.p.s i shall be very thankful to you if any body give me the directions to make the u.p.s

Comment from Adeel
Time April 23, 2010 at 1:25 pm

Dear Genious,

really you done a great job. If possible please also show me the picture of your inverter.

If possible please share with us Automatic charging inverter.

Comment from Adeel
Time April 23, 2010 at 5:51 pm

can you show me the PCB of this circuit and also how you place power transistor in a line

Comment from Matt
Time April 26, 2010 at 3:33 am

Do you have a circuit for a 500W sine wave using the same parts as this circuit?

Comment from Matt
Time April 26, 2010 at 3:35 am

In this circuit what is the function of the D313 transistors and TIP35C transistors

Comment from Adeel
Time April 28, 2010 at 11:49 pm

dear guys if any body knows the polarity of capicitor then please share because I dont know where is the inventor of this inverter…so please shares us that how we place the capacitor…

Comment from kalyan
Time April 29, 2010 at 7:37 pm

dear sir
mujhe ye jankari leni thi ki yah inverter automatik battrey chage bhi karega

Comment from wole
Time May 3, 2010 at 3:56 am

i need the circuit diagram for 1.5kvA and for 2.0kvA, the component and how it can be done. thank you

Comment from owais
Time May 9, 2010 at 4:22 am

i like your circuit diagrams but please email me all about basic information about ups and inverter

Comment from dayonce
Time May 10, 2010 at 2:53 am

Your circuit diagram is yet to be tested but your explanation is lovely.I am doing a project on this and would like to know more about this.

Comment from Lawal
Time May 12, 2010 at 1:26 pm

I want to know how to use this circuit diagram to construct an inyerter.

Comment from Precious
Time May 13, 2010 at 3:02 pm

I love the circuit but please I would like if you kindly sent me a circuit for 1kva & 2kva.Please.

Comment from john
Time May 13, 2010 at 5:39 pm

which device is this 7809 in the inverter circuit.
pls i need an answer anybody.

Comment from Fortune
Time May 16, 2010 at 1:09 am

I like your circuit diagrams but i wish to ask some questions, why is pin 13 of CD 4047 is not connected ? and what is the zener diode in the circuit?I will appreciate ur help ,plz e-mail me the answers.

Comment from BasicLearner
Time May 17, 2010 at 12:30 pm

Friend please inform how can i use this circuit for a ups

Comment from Zain
Time May 20, 2010 at 11:24 pm

@john, 7809 is a positive voltage regulator. this means that if we give 12V DC or higher (Max 35V DC as per its data sheet) then this IC regulates the output to be exactly 9V. For further detail you may google the data sheet of this IC.

Comment from Chintem Joe
Time May 27, 2010 at 8:05 pm

the inverter circuit on this page is deficient. I think we should think of a better way of designing an inverter that can generate a smooth AC signal

Comment from Hippie
Time May 29, 2010 at 12:15 am

Genuis, I marvel at you patience, explaining things that can be found on google without any problems, and answering rudimentory questions.

Can those of you that ask all these questions not interpret a datasheet for a Cd4047? Or a 7809 for that matter, or figure out for yourselves what voltage a cap should have? Give the poor man/lady a break!

And no, you cannot use the cct for a UPS, basta!

More power to you all!

Comment from Erwin
Time June 1, 2010 at 1:21 pm

This kind of inverter is obsolete in our home lab.
First, becuse efficiency is low compared to the Pulse Width Modulation type inverters. Second, because of the bulky iron core transformer.
Try researching IR (International Rectifier)Projects
They have PWM drivers for PWM inverters.

Comment from ts
Time June 1, 2010 at 8:00 pm

i follow the whole circuit. but when i on the power supply, the power supply show me short circuit. what is the problem that i m facing. hope u can help

Comment from gottipaty
Time June 2, 2010 at 8:05 am

friends
Iam looking for a circuit diagram for inverter
5000watts and sugre power @ 20000watts. can any one help me ic circuit to my above requirements.

input voltage solar power dc 12 or 24 amps 1 or 2amps

Comment from Precious
Time June 2, 2010 at 8:38 pm

I LOVE THIS CIRCUIT BUT PLEASE, I WILL LIKE IT IF YOU PLEASE POST ME THAT OF 1KVA,2KVA AND POSSIBLY 3KVA.I WILL BE VERY GREATFUL IF MY REQUEST IS GRANTED.

Comment from Jack Jenson
Time June 6, 2010 at 7:27 pm

Circuit works great and I managed to substitute some components and increase power to about 700 watts.
waiting for you to upgrade this to Pure Sine Wave output, preferably a circuit that can just piggyback at the output end.
Thanks again. jack Jenson, Malaysia.

Comment from jarrylmich
Time June 8, 2010 at 2:27 pm

hello..anyone can give me an iverter power supply up to 500W for my school experment? thanx

Comment from noman yameen
Time June 9, 2010 at 2:42 pm

i like it inverter 500w im a student d.a.e electronic and me an inverter is making to 100 w its best technology me 500 w circuit is buying where is 500 w circuit ? me is buying to 500 w circuit so pleace help me ?

Comment from Kormi David
Time June 10, 2010 at 5:10 am

helo dear, you’re a good engineer to share have share your knowlegde. may i know the following;
1- since is a square wave inverter, what can be added to it to make it produce a perfect sine wave for to be use for all a.c. appliances within 220-240V?
2- what is the time duration for the battery to be in operation?
3- can LEDs be included in the connection for indications purposes?

I like your circuit and will like to modify it so that we share the idea together. thanks

Comment from misiko
Time June 12, 2010 at 6:08 pm

thanhs 4 the idea am still studying the circuit to see if I can make one for myself.
can I use thi circuit on a 40ah battery

Comment from smnadim
Time June 14, 2010 at 12:48 am

This is a very good square wave inverter. I am however waiting for the automatic version with battery charging and automatic switchover to inverter when power goes off. Kindly provide this as promised.

Comment from deco
Time June 14, 2010 at 5:02 pm

hi genius i followed every thing in your diagram but what am doubting is that are the capacitors polarized capacitors?

Comment from Jayashree
Time June 15, 2010 at 11:27 am

I want to design a inverter circuit so that its input is 48V DC and output should be 230V AC, 50Hz frequency.. can i use same circuitry

Comment from VISHNUMANOJ
Time June 15, 2010 at 6:46 pm

hello….i want circuit for 500w\230v ups automatically charing for 12v battery..if current is cut of automatically the ups want to work….

Comment from loveday
Time June 16, 2010 at 3:22 am

Thanks for you post. Pls can you repost the diagram of the Transistor to make it more clearer.

Comment from tehseen
Time June 16, 2010 at 7:42 am

sir i want to make about 1500 watt inverter plz reply me i will thank to you
thanks in advace

Comment from Segun Lawal
Time June 17, 2010 at 5:00 pm

Hi, I’ve benefited a lot from this site thanks a lot. I have a little problem and I would need your help.
Pleas I’m a student in the university and am about to write my project and my project topic is on “construction of home use inverter.” Pleas if you don’t mind I would like you to send me materials on this.
Sorry for disturbing, I would be very grateful if my request is granted.
Segun

Comment from Binoy Cochi
Time June 17, 2010 at 7:43 pm

Hello sir/madam
please published 12VDC to 230VAC 1000W(RMS) pure sine wave inverter circuit

Comment from samuel
Time June 18, 2010 at 8:34 pm

GOODAY SIR, PLS I NEED UR HELP.I WANT U TO HELP ME WITH INVERTER OF 5.5KVA DIAGRAMS WITH BATTERY CHARGER TO ENABLE IT CHAREG WHEN IT IS WORKING

Comment from abubakar
Time June 19, 2010 at 5:39 pm

hi, genius, thks for great job u are doing. i will to no you very well.thks

Comment from Melrack
Time June 22, 2010 at 3:11 pm

Thanks for the circuit…. nice work… your circuit can play between my homemade transformer and 6v battery..

Comment from p.k.gupta
Time June 26, 2010 at 4:03 pm

why there is leakage or return voltage at INPUT power supply plug/pin, when Inverter is in connected with 12v battery and output load wire.
we get electrical shock at plug top pins ,when plug is removed and kept out of socket.

Comment from noedless
Time June 28, 2010 at 2:02 pm

if the batteries are connected this inverter will charge the batteries its own?

Comment from keith
Time July 1, 2010 at 8:51 am

is there a device that can measure the frequency? what is its name?

Comment from shakeel
Time July 5, 2010 at 2:21 am

Thankyou so much for circuit.in the falloing circuit diagram you don,t mention ground battery connection only you show at transister at tp35c with ground symble.but as you know regulator 7809 also need groung connection. capecitor 220 mf & capecitor 01 mf also need ground connection.
thanks

Comment from ric
Time July 7, 2010 at 11:29 pm

wow the best! i try here in my room working well i used tip31 in 4 pcs and my drive is MPSA42 working very well. thanks for this upload

Comment from anonymous
Time July 9, 2010 at 4:41 pm

Thanks for sharing your circuit of an inverter. I just want to know the instruction on how you connect the electronic components especially the IC’s.

Comment from anonymous
Time July 9, 2010 at 4:55 pm

Can I have your instruction? I’m confused about the connections in D313 transistors with 22ohn(1W).

Comment from musinga dido
Time July 10, 2010 at 10:13 pm

am so happy with this enverter but how can i press a variable resister for the voltage.it has only the frequency.thanks.

Comment from a.s.bisht,faridabad
Time July 12, 2010 at 11:08 am

god bless you and thnaks for this circuit. pl forword the scheme for auto-matic inverter and their indication out put connection.

Comment from fahad
Time July 14, 2010 at 2:28 am

plz tell me how to connect tip35c transistors in parallel plzzzzzzzzzzzzzzzzzzzzz

Comment from Fily
Time July 14, 2010 at 4:54 am

Hello there, i want to know if you can make this inverter design for 10kw continuos and 110-127 volts out.
I need to make one of this. Tell me if you can do it and how much would i pay you.
Thank you. (Excuse my english, is too bad)

Comment from Zakaullah khattak
Time July 15, 2010 at 2:15 pm

sir plz make the circuit for outomatic backup.ups back up how i built it< also for pure sine wave plzz sir thanks

Comment from ras
Time July 16, 2010 at 11:33 am

nice diagram,bul not easy to distinguish the inpuits and outputs of voltage regulator.

Comment from zeeshan ahmed
Time July 19, 2010 at 9:31 am

wow what a great circuit i am trying to make this circuit.
Regards.

Comment from Firas
Time July 19, 2010 at 5:05 pm

Hi I am looking for a sinewave aps or ups circuit schematics and also looking for a filter for a square wave aps so my fans doesn’t burn any more make sure 220v @ 50 hz

Comment from malek
Time July 25, 2010 at 5:35 pm

hi if the batteries are connected this inverter will charge the batteries.

Comment from LAL BUX ZARDARI
Time July 26, 2010 at 4:24 pm

WHTS IS TOTAL COST OF THIS CIRCUIT.?

Comment from sunny
Time August 1, 2010 at 11:22 am

can u tell full warking of inverters

Comment from cloud
Time August 3, 2010 at 8:37 am

if i used step down transformer for my out is it possible

Comment from Bing
Time August 3, 2010 at 6:06 pm

Hello Genius,
I plan to build your 500 watt inverter as off-grid application, I will combine with the micro hydro power to charge the battery.
As you mentioned earlier that you would try your best to post a self tested sine wave circuit as well as soon as possible, have you finished with that plan?
BTW, your 500 watt inverter is square wave inverter, what will happen if I load it with tv tube, LCD tv, amplifier, and water pump? please advise me, Many thanks.
Cheers,
Bing

Comment from Muyiwa Obadara
Time August 6, 2010 at 2:51 pm

What Is The Voltage Of The 220uf and 1Uf Capacitors

Comment from femi
Time August 6, 2010 at 3:40 pm

please, i am working on a project. i want you to help me out. i need 2kva inverter circuit within a short period of time.

Comment from Bing
Time August 6, 2010 at 8:31 pm

Hello Genius,

if you have a simple pure sine wave inverter, would you please send it to me as I plan to make this as an off grid application and to be combined with the micro hydro power system, many thanks.

Cheers,
Bing

Comment from ayobami
Time August 9, 2010 at 3:54 pm

Hi genious, pls can l use TIP41C instead of TIP35C. also l want you to send the charging circuit along with the connection to the inverter circuit to my e mail adress. you are a blessing to this generation.

Comment from netra
Time August 14, 2010 at 10:14 am

very very nice for the inverter schematics diagrams but this only not clear bcuz… where they A/C charging system or relay cut/off system? if put the this all charging or relay cutt/off or some overloard prtections ups/online system then i guess be completly shematic diagrams

Comment from john
Time August 16, 2010 at 6:59 pm

i realy appritiate your intrest to technology and i admire you. I built an inverter of 2000watts and test run it with a 12volt 100amp battery to power five 60watts light bulbs, two phone chargers and step down stereo system and it lasted for only two hours plus. what do i do to generate light with inverter for a longer time?

Comment from abu
Time August 28, 2010 at 2:51 am

hi sir, i love dis circuit diagram, but can it work for 2.5kva of ups?

Comment from reks
Time August 30, 2010 at 9:56 am

hello sir,
if i use mosfets instead of the transistors will it work the same way?
also if i want to use a PWM triggering circuit how will my circuit look like…can u please send me mail alongwith its circuit diagram at “scorpio_16ad@yahoo.co.in”

Comment from zakir husain
Time September 1, 2010 at 2:25 pm

hi, ples showing details for transformer.
how to make.
thank,s

Comment from Dinesh
Time September 3, 2010 at 3:49 pm

sir i hav build d inverter with ur circuit but wid a smal change tat is i hav used 1313 instead of d313 transistor wen i power on its geting too much heated but i check their no physical short circuit in my invertor.could kindly help me 😉

Comment from George John
Time September 3, 2010 at 5:46 pm

Hi; Nice work, can you sent me 1000w 24dc-240ac inveter circuit diagram plz?.

Comment from sathish
Time September 5, 2010 at 10:14 am

i have an that battery which we are can 12v 7.2 ah

Comment from Alex
Time September 6, 2010 at 8:44 pm

you have used 4047 in this circuit. Is it a CMOS IC?
I have heard that CMOS ICs are sensitive to physical touch. I we touch this CMOS IC while soldering it, is it possible to affect its performance.

Comment from Brad
Time September 6, 2010 at 8:46 pm

hey very cool project. so just for giggles…if i was off-grid and had need for greater a/c demands a) am i better to have multipul ..say 500w inverters or am i better to build one power house? b) because of the diy prosess i could sevice my own gear and what would be the best parts to have on stock?(burnout fastest)and finally if i build at a nominal power level can i beef up the inverters with simple add-ons or bigger hard ware???? really cool stuff dude

Comment from Naveed
Time September 9, 2010 at 5:31 pm

hi !!!!
this is a very good circuit but u do not tell it`s “print circuit board”.plz tell me where met me its P.C.b.

Comment from ahmer khan
Time September 9, 2010 at 10:04 pm

how much the transformer cost?

Comment from ahmer khan
Time September 9, 2010 at 10:06 pm

my question is that how much this 12 0 12,42 A transformer cost?and also how much the battery cost?

Comment from Martin
Time September 10, 2010 at 3:40 am

Hello…
Thanks for this scheme very much…
I have some questions for you..
I need to build a inverter with more watts, something like 1kW 2kW etc…
I reed some of the comments and did I understand well? If I use more then 12 Power Transistors TIP35C connected parallel will I get more power. You sad that number of watts divide by 100 will give a number of transistors needed. For example: 2kW – 2000w divide by 100 is 20 Tip transistors on itch side.
One more thing… How can I get sine inverter of high power… Can you send me some schemes I’ll be great full…
Thanks…

Comment from yasodha
Time September 13, 2010 at 1:53 pm

Hi sir
Can you sent me 1000w 12dc-240ac inveter circuit diagram plz?

Comment from KESHAB BANGLADESH
Time September 13, 2010 at 2:55 pm

thanks my dear 4 this circuit.but alternative transistor & transformer Amp. is need.Help me please.

Comment from bolaji
Time September 18, 2010 at 6:34 pm

hello pls i need a project write up on inverter and a circuit about 300watt

Comment from KRISHNASWAMY
Time September 21, 2010 at 5:02 pm

The circuit was very simple and eassy to make with in a day at high power (500)
I want to see how to make transformer calculation
please shoe that

Comment from KRISHNASWAMY
Time September 21, 2010 at 5:08 pm

the circuit was very simple and eassy to make with in a day for 230 v at high power(500)w
please shoe me the transformer calculation
I made this inverter and gave to my frinds

Comment from oluchukwu
Time September 25, 2010 at 10:53 pm

Hi; Nice work, can you sent me 1000w 24dc-240ac inverter circuit diagram pls?.

Comment from ayubu
Time September 27, 2010 at 6:28 pm

hey very cool project. so just for giggles if iwas off grid and had need for greater ac& dc demands a am batter to have cicuit diagram 5000w inverters or am i better to build one power house? b because of the diy prosess i could sevice my own gear and what would

Comment from emmanuel idogun
Time September 29, 2010 at 2:56 pm

hello,thanks for sharing ur ldeal,but i will plead you assist me with a 3kva automatic sine wave inverter circuit,couple with the transformer design ratio turns.which i will be very happy if the assitance is render to assit me to achive the aim of my project thanks for previous support.

Comment from Vyakii
Time September 30, 2010 at 5:36 pm

type of capacitor used in circuit electolytic or non if electrolytic then polarity should given…. and which transformer is used 12-0-12 to 240 or 240 to 12-0-12.. i.e. prymery and secondary.. and batterys ah i think it should greater than 115ah..and is compalsury to parallel 6 TIP35C.. why 6.. and can i use normal NPN tran …

Comment from Kashif Hussain
Time October 2, 2010 at 9:44 am

hey!! please tell me that you have connected 2 power transistor in this give circuit diagram and u r saying connect 12 power transistor in parallel. please can u describe it in detail and how can I connect in parallel.

Comment from Ojo sundao
Time October 5, 2010 at 2:39 pm

pls can we use this inverter for an amplifier? pls send my answer to my email………….

Comment from koomson
Time October 11, 2010 at 11:26 am

pls i want caculation under inverting and non inverting, sand the answer to my e- mail.
thanks

Comment from ANTHONY LYNCH
Time October 16, 2010 at 12:49 am

What types of home appliance can be used with this inverter? Refridgerator?

Comment from uwandi john ogochukwu
Time October 18, 2010 at 12:57 am

hi wizkid.i can’t be thankful enough you for openning our eyes to d world of constant electricity supply through the knowlegde of inveter designe.kindly send to me detailed circuit of a pure sine wave,an automatic 24v-2kw,3kw,5kw, inverter circut iwith indicators and meters.

Comment from Isu Williams
Time October 19, 2010 at 11:20 pm

i design an inverter (1.5kva) but the peroblem i ve is on how to connect the full battery and low battery charger and the auto converter of the a.c to d.c (on power cut off, swiching from inerter to main sullpy). pls send the ans. to my mail box.

Comment from ELVIN
Time October 20, 2010 at 9:15 pm

Hello, this works is great but i have one question I’m a Karcher Cleaning Equipment Technician I have a Karcher Military Equipment, and want to build this intended to power up my Ignition Transformer for Heater. Ignition Transformer Spec.

Primary 230V 1A 60hz
Secondary 2X5kv r.m.s 20mA
(14kv peak)

The original inverter that have is 12v input 240 output 300watts, Equipment type Karcher Engine Driven Pressure washer Decontamination System.

Hoping for your reply at your conveniet time, tru my Email or on this site.

Comment from ahmed
Time October 21, 2010 at 1:25 am

sir,
I want to know about 1000W inverter circuit diagram.can i modify with the help of 500W inverter,which you have already made.please inform me about it or send me diagram about 1000W inverter.
THANKS
My email address,

“ahmedhusainawan@yahoo.com”

Comment from Nigel Weeks
Time October 21, 2010 at 8:53 am

Warning to all readers – this circuit is completely unregulated, and depending on load, it’s output voltage will vary wildly, possibly damaging anything powered by this device.

I’d recommend a small 240 – 5v transformer, feeding a ~5v signal back to a control circuit.

If the feedback goes over 5v, the duty cycle should be reduced, to keep the voltage close to the required output.

You will also need RC delay circuits, otherwise the control circuit will hunt up and down, trying to maintain the output voltage.

This circuit will work for devices that aren’t too power sensitive, i.e. simple hand tools, but I wouldn’t go plugging my expensive stereo into it…

Nigel.
“nigel.weeks@gmail.com”

Comment from Oli
Time October 24, 2010 at 7:54 am

Just to agree with Nigel – this circuit is indeed unregulated and of a very basic nature, so I would not advise using it for anything other than lamps, motors etc. Not for Sensitive Digital equipment like PCs, HiFis, DVD players etc.
As Nigel says, some form of feedback is necessary for a closed loop system that will be more reliable – the standard way is to use and isolated voltage as described, there is plenty of info/circuits around on the web, based around MCUs like PICs (using PWM module to control duty cycle), or timers like 555.

Also for some folk who are asking very basic questions about current/wattage/transformers and so on, I would not advise taking on a project like this that deals with mains voltages and can be lethal if mistakes are made. I would start off by reading a book on basic electronics and power supplies, then attempting a low voltage version of this (just use a different rated transformer) or similar projects (under 50V for all voltages), like a DC to DC converter, inductor based buck/boost regulator or a charge pump. This will help to understand the theory behind switching regulators/inverters, and testing/experimentation can be done safely.
Remember – electricity kills easily, if at all in doubt then give it a miss.

Comment from ukyo tachibana
Time October 25, 2010 at 10:17 am

hello,can i ask for a circuit on how to convert a 45-50 Vdc into 12 Vdc??please help…tnx

my email address,
“ukyo_bluespirit@yahoo.com”

Comment from chee leong
Time October 26, 2010 at 1:45 pm

hello… ur works reali nice… izzit possible is i use the inverter to conter the DC current to AC current which generated by solar panel ? because i wan stire it in the lead acid battery for further use

Comment from FARHAN
Time October 27, 2010 at 1:17 am

I CAN USED 12V 50 AMP BETTERY,THIS INVENTER IS WORKING YA NOT AND HOW LONG TIME ITS WORKING AND WATTS

Comment from Deo
Time November 9, 2010 at 11:37 am

Hi I am trying to drive a powerful electromagnet at 110 volts using audio frequencies, I tried using a 24v/110 transformer and plugging a line-level audio signal into 1 D313 transistor and an inverted copy of the signal into the other D313 but it’s not outputting 110 volts, can you advise me what I am doing wrong?

Comment from Deo
Time November 9, 2010 at 11:40 am

PS I used the part of your circuit that uses the D313s and 12 TIP35 transistors

Comment from Faraz
Time November 13, 2010 at 1:56 am

Is there any way to amplify 12volts to 220 volts without using transformer? 500VA and above transformers are very expensive in my area.

Comment from Mahesh kadam
Time November 13, 2010 at 4:19 pm

Sir send me your email id

Comment from sawant
Time November 14, 2010 at 1:24 pm

can you please tell me the gauge & turns of wire in primary & secondary ?

Comment from Mahesh kadam
Time November 14, 2010 at 5:38 pm

Sir i want to make inverter using 6v, 4ah battry by using tis b howmuch power i cn genret. which transformar i hve to use

Comment from atif
Time November 16, 2010 at 11:30 pm

can this circuit operate a 12v35ah battery plz reply me soon……….

Comment from David Cheroze
Time November 17, 2010 at 7:30 pm

Are the capcitors polarised or not?

Comment from jerome
Time December 4, 2010 at 8:31 pm

good day sir!
thank you for uploading this schematic diagram of power inverter.hopefully i try this project.godbless!

Comment from Alick Silomba
Time December 15, 2010 at 5:59 pm

Thanx for this wonderful circuit, Genius. I would like to build this circuit and my question is same as David Cheoze’s. The polarities of the two capacitors are not indicated in the circuit diagram. Secondly, the crossing wires are they connected or not coz there are no blobs to indicate physical connections. I need your clarification. Regards. God bless you, Genius.

Comment from arivazhagan
Time December 16, 2010 at 3:43 pm

please tell me how to connect 6 transister in parrallel

Comment from yogesh
Time December 17, 2010 at 11:28 am

sir iwant to made a 300watt power inverter with overload cutoff with display output power how much power use at particular time

Comment from platinum
Time December 22, 2010 at 1:53 pm

Hi all…Ive been trying this circuit and it really works to drive my DC motor,…for inverter you can use any transformer from junk UPS with a little modification….

Comment from Alan
Time December 22, 2010 at 2:57 pm

I would like to put my swimming pool pump onto some type of circuit similar to this ; 220v 1A 1HP motor ideally to run for about 8 hours. Is this 500 watt circuit overkill or would it be suitable for an application such as this ?

kindly reply to my email address as well please. Many tkx

Comment from saleh shaukat
Time December 23, 2010 at 3:17 pm

hi genius,
How r u,can u plz send the schematics of D1047.what will happen if we connect it in series instead of parallel…???

Comment from Amezing..
Time December 23, 2010 at 5:13 pm

@arivazhagan:
just connect parralelly yar…
E to E,
B to B,&
C to C….

Comment from Amezing..
Time December 23, 2010 at 5:17 pm

@Alick Silomba :
polarity can be predictablel.
near zener diode u should connect -ve terminal to 2nd pin of ic 7809 i.e. ground.
& near pinn 1 -ve should connected to pin 1

Comment from Amezing..
Time December 23, 2010 at 5:19 pm

@atif :
no at all…….. yes just for a 10 min o/p
okkkk

Comment from yogi
Time December 27, 2010 at 7:57 pm

please tell me where to get pin detail for transistor d313

Comment from satya
Time December 29, 2010 at 10:35 am

Thanks,
Can I use STP55NF06L Mosfet in place of TIP35C Power transistor.

Comment from Chris
Time December 29, 2010 at 10:58 am

Hi,

Can any one please help me with deciding what is better for Inverter , use of IGBT or Thyristor. please also state why its better option.

Thanks

Comment from sree
Time January 2, 2011 at 12:30 am

is any possible to run a shunt motor at 1.5v

Comment from imran ullah
Time January 5, 2011 at 2:19 pm

sir i hav build d inverter with ur circuit but wid a smal change tat is i hav used 1313 instead of d313 transistor wen i power on its geting too much heated but i check their no physical short circuit in my invertor.could kindly help me.
Goodday sir,please I will be glad to get more information on HOW TO CONNECT THE 12 TIP35C TRANSISTORS IN PARALLEL and to DETECT THE EMMITER,BASE AND COLLECTOR TERMINALS OF THE TRANSISTORS.
Thankyou so much for circuit.in the falloing circuit diagram you don,t mention ground battery connection only you show at transister at tp35c with ground symble.but as you know regulator 7809 also need groung connection. capecitor 220 mf & capecitor 01 mf also need ground connection.
thanks plz help me in that point.

plz i need your help more .
reply me on this E Mail as below under ,
Email=”james4all_2005@yahoo.com”

Comment from nayan
Time January 9, 2011 at 9:36 am

can anyone tell me the frequency expression of CD4047 type astable multivibrator. my email is “nayan_y2k_eee@yahoo.com”. pls send me urgently.

Comment from HASMUKH
Time January 11, 2011 at 3:27 pm

Can i Use it for CFL lamps?

Thanks

Comment from SAMEER
Time January 14, 2011 at 10:20 pm

hi! this is very nice article and circuit idea.
please tell me if you can, how can i backup appliances just for a minute. and which battery should i use to back up just for a minute. please mail me if you have any idea. thank you.

Comment from Muhammad Abdullah
Time January 19, 2011 at 11:33 am

as-salam-0-alikum,

Mr. pleaase tell me why you conact + terminal of battery direct to transformer, which you mention 0v
thanks
Allah bless you

Comment from Muhammad Abdullah
Time January 19, 2011 at 11:37 am

and please tell me what is the purpose of the switch between 22 ohm resistance and 5th pin of cd4047

Comment from jan ups (think for high)
Time January 21, 2011 at 9:37 am

MY name is jan.I have worked from long time on ups.I have designed 1 block transformer using as (regulator+steplizer+ups)when voltage islike 50v input by regulator u can make up 220v t0 250v or more than.if voltage is from 80 v input the steplizer automatic sets output 220v.and that time u can also charges your battery.when the light failure is comes the ups directly starts on function.i have maked 12v ups(500w to 1000w) as well as 24v ups(1700w).but this time i want to make ups with planar transformer.bcs the other tansformer is so weightful.and battery backups is so less than the ups of planar ups.If any one can help me to give up planar ups diagram i will be really thankful and i wants to make and join a group who really wants improment in ups work.if any one wants let me know.(skaleemkh3@yahoo.com)

Comment from kamal
Time January 21, 2011 at 4:30 pm

please sir sent to me a automatic version of this circuit and can we use RC phase shift oscillator to produce sine wave

Comment from SAMUEL
Time January 22, 2011 at 10:51 pm

please can this circuit carry up to 3000watt transformer.Also, can 12dc charger for the battery.
i would be grateful if u can send me your mobile number for direct contact.THANKS

Comment from Chadan
Time January 23, 2011 at 8:25 am

Can i use 6v battery instead of 12v battery. If yes then tell me circuit diagram. If i am use 2 cfl bulb then how long time it will be work.

Comment from Abiola
Time January 25, 2011 at 3:50 pm

Hello,
really appreciate your contributions to human development. The circuit is OK. But can you give a driver FET circuit diagrams to implement at the driver stage if we are to use FET. Then a feedback circuit diagram from output for stability and compensation. You can also post this to my mail address. Thanks and God blessed.

Comment from Bunna
Time January 26, 2011 at 7:32 am

If i want to get 2000w inverter, i have to plus up many transistors. the question is if plus transistors what about transformer voltage require? does it keep the same voltage(10v-ov-10v)? Please give me some commons to by email me : “bunnacbn@puc.edu.kh.” Thank you

Comment from protim roy
Time January 30, 2011 at 3:43 pm

can I get any type of inverter circuit diagram without any center-tape transformer

Comment from salik rao
Time January 30, 2011 at 8:44 pm

u have mentioned above that the system will generate square wave instead of sine wave which cause difficulty in running inductive loads..how can i get pure sinosoidal wave so that i run my other appliances properly?

Comment from Bright
Time February 1, 2011 at 6:17 am

Hi genius,
i need more explanatoins on the arrangement of the 12 transistors and the middle leg at the low voltage side of the transformer, because i have only seen a transformer with to legs in the input side. Thanks.

Comment from SURAJ
Time February 16, 2011 at 11:10 am

Hello Sir/Madam,
I have some questions for you.
=>Please tell me how to connect TIP35C power transistors in parallel?
=>What are the other IC can be used to replace of this two IC(CD4047,7809)?
=>What is the total cost of this circuit?
=>Price of unity?

Please post the above answer to my mail.
“sooraj_arc@rediffmail.com”

Thanks

Comment from HAZMAF
Time February 16, 2011 at 11:49 pm

please i want to have more detais instruction on the construction of the more powerfull inverter; can you help eith it?

Comment from hemanth
Time February 22, 2011 at 12:21 pm

Hi sir,
i saw the inverter circuit,i am preparing the circuit but i have a small doubt about the 12v battery AH ….? sir. pls tell me sir.

Comment from seenu
Time February 24, 2011 at 1:12 pm

how can i use the emstop for my motorinverter. i already connect the out put of inverter to motor conection i give one conductor from that i give the emstop but when runing time i stop the inverter is trip overcurrent i already change the perameter of low current also its trip pls advise me

thanks and regards
seenu

Comment from sunil s
Time March 1, 2011 at 7:47 pm

i want ckt design for any required frequence and with the voltage

Comment from sacky
Time March 8, 2011 at 5:46 pm

hi sir can you post a much larger output voltage capacity something like 10 kilowatts that can accomudate 1 single residence.
hope you have to. tnx

Comment from walter
Time March 9, 2011 at 12:26 pm

Does it work for 1amp power supply? and you mean 500w transformer?

Comment from Bhoopendra
Time March 10, 2011 at 3:00 pm

I want back up time calculation

Comment from gopal
Time March 11, 2011 at 4:35 pm

dear sir pls send my id full corcuit daigram with charging and peur sinwave .

Comment from Nze Jideofor
Time March 11, 2011 at 8:58 pm

Hi,thanks for your circuit.sir,i want you to send a working 2kva inverter circuit with its component and the description of the transformer i will use for it to my mail.my mail is “jideofornze@yahoo.com”.thanks

Comment from Omar Zeb
Time March 13, 2011 at 4:39 pm

I m an electrical engineering student currently in final year i got up a project named as energy sever’s inverter circuit improvement … can any body help me regarding this…

Comment from Mamun
Time March 15, 2011 at 8:42 pm

Can I use IRFZ44 mosfet instead of TIP transistor? How many load current tolerate the CD4047? Can I use this circuit using mosfet upto 500W?

Comment from Billy Graham
Time March 18, 2011 at 4:27 am

Hi Re 500w inverter, is the power output related to the number of output transistors/wattage ? i.e. higher power rated transistors = higher output watts? more transistors in parallel = more watts ?

Best regards from Scotland, Billy Graham.

Comment from Billy Graham
Time March 18, 2011 at 4:36 am

Hi, Another 500w inverter question, 7809, in the diagram, input at the top, output (via the switch to pin 14) and 0V on the left ? is that correct. The transformer, rated at 240V @2.2A ? (500VA)

Thanks in advance. Billy Graham.

Comment from lakshya
Time March 20, 2011 at 1:05 pm

Im building a 12-240V inverter. The problem i face is the current using in 12V side is around 20A. The normal transformer cant wintstand so high current. Could u tell me how can i build a transformer? Please post the answer to my mail.
“lakshya.prasadonly4u@gmail.com”

Comment from chenco
Time March 22, 2011 at 2:36 am

pls kindly send me different circuits on pure sine wave oscillators range from 12volts to 120volts. also the connection of IGBT on the sine wave oscillator with the type of transformer to be used. tanks in advance

Comment from suhas s more.
Time March 23, 2011 at 9:05 pm

hello sir, thanks for sharing your idea on

your inverter very intresting.can i get 2000w inverter circuit diagram. i will be very happy if i can get it
thanks,
my name is suhas more my email is “gsairconditioning@yahoo.com”

Comment from suhas
Time March 27, 2011 at 5:57 am

Hi.sir how r you.befor i send to you.one mail for you.about 200w inverter circuit daigram .pls send becous we dont have inup power.we have 5 hours load sheding.so i want to make inveter for my home.i will be very thanks full you.

Comment from MNbernal
Time March 27, 2011 at 6:16 am

@ dave Rejoinder to his electric car.
Please verify your design on your electric car project.
There is no need for DC-AC inverter in your project The power used for driving your car is a DC motor. where it discharges during drive, and automatically recharges your batteries when braking.The factor there is where do you get the charging power to drive say to some 50 miles. And now much Ampere hours your battery bank must have.
This is why hybrid cars come to light.

Comment from kareem
Time March 30, 2011 at 4:42 pm

hello sir piz give me 1000w circuit

Comment from michael jay
Time April 14, 2011 at 12:25 am

how i can make it the circuit inverter to be a sine waveoutput if the cicuit has an output of square wave, tnx, and best regards

Comment from Md. Sakhawat Hossain
Time April 16, 2011 at 2:31 am

hello sir piz give me 500W Transformer and charger circuit. I can’t make Transformer. How to make transformer? please sir. I’m doing a project. I look forward to you.
thank you sir.

Comment from Murali
Time April 16, 2011 at 12:49 pm

sir,
its good design;making circuit can be done, implementing is very tough task.but you have achieved it.
what is the AH of the battery.
firstly i will try making this circuit using software tool.if it work out i will go implementation.

Comment from david
Time April 16, 2011 at 1:17 pm

hello i made this inverter and it gave a very bright light with a 100 watt lamp but but my shaving machine of 10watt has refuse to atart what could be the problem thank you.

Comment from suhas
Time April 18, 2011 at 3:35 am

Hi.sir how r you.befor i send to you.one mail for you.about 200w inverter circuit daigram .pls send becous we dont have inup power.we have 5 hours load sheding.so i want to make inveter for my home.i will be very thanks full you.

i am waiting for your anser plase sir
i am sorry sir.i was wrog becous my mail id was wrog iam sending to you. gsairconditioning@yahoo.co.in

Comment from SURESHKUMAR
Time April 18, 2011 at 1:08 pm

Hi

i am suresh, i will use 4 tube lights and 2 fans, please show me that type of inverter circuits

thanking you

SURESHKUMAR .K.

Comment from Michael Cole
Time April 19, 2011 at 7:17 pm

Good Afternoon Sir {Mr Genius},

Am Mike living in Nigeria and a student of Yaba College of Technology.

Sir, am sorry to disturb you with my mail, but please i need your help on production of inverter. i just saw the inverter production details which you published above, it is very ok. But Sir, i need a complete inverter system/circuit diagram with complete details, which can also charge the 12V battery or more.

Sir, i need to make a difference in my country “NIGERIA” in the production of inverter due to power failure in my country… Or if you have any idea/suggestions on how i can go about it. I will very much appretiate it. i really want to make a positive impact to my country NIGERIA. I hope this relation will go along way.

Thank you for taking your time to read this while i await your positive response.

Yours faithfully,

JC. MICHAEL
“mickeydchamp@yahoo.co.uk”

Comment from imran
Time April 19, 2011 at 8:11 pm

thanks please would u tell me about module and electronic circuit use in 500w ups

Comment from sushil
Time April 21, 2011 at 12:10 am

sir,i din’t understand the connection of -ve terminal.where it is connected can you help me pliz.

Comment from Mohammad sajid
Time April 25, 2011 at 10:18 pm

please send complete circuit with all 12 parallel transistor, im new and can not under stand connection thank.

Comment from Fra
Time April 27, 2011 at 7:21 pm

Thanks for your circuit!
Is it possible to modify it so that the frequency will be tunable around 15 khz?

Comment from Trevor
Time April 29, 2011 at 4:43 pm

what else needs to be put when connecting the 12 transistors;either resistors or something else.is it possible to test on the breadboard with all transistors.

Comment from sunny
Time May 2, 2011 at 11:33 pm

hey how watt is it
500 or less or high

Comment from bauren
Time May 4, 2011 at 4:13 pm

hie,l have built this circuit using two transistors and its producing about 2volts.now my problem is how to connect all the transistors inorder to get the required output.plz help.

Comment from Okoye sunday
Time May 6, 2011 at 3:46 pm

I once crave for this circuit,not just the cct but how to amplify it’s wattage without zapping components.i just stumbled into this site and have learnt alot.not only from the cct but also the comments.nice work.

Comment from prakash katuwal
Time May 7, 2011 at 10:40 am

dear sir/madam
i am electronic technician . i am working Kathmandu Nepal . i saw your side but i didn’t find the full circuit diagram of 12volt DC to 240 volt AC converter diagram please sir/madam if u can provide this circuit diagram it is helpful for me my career
your sincerely
prakash katuwal

Comment from ali
Time May 10, 2011 at 2:36 am

hello sir kindly plz send me an automatic inverter diagram email address is “capricon2@yahoo.com” plz plz

Comment from ahnad
Time May 10, 2011 at 11:49 pm

will this inverter recharge the battery it self?

Comment from Peter Adzakey
Time May 12, 2011 at 9:32 pm

Thanks so much for your circuit diagram, it has helped me in my project work. Please I have a slight challenge with the testing of the inverter, I am having high frequency of about 11.05 MHz instead of the 50HZ, also I am not having any output voltage at the other side of my transformer, thus the output side. Please kindly direct me as to what to do.
Thanks for your support

Comment from partha
Time May 13, 2011 at 11:56 am

i want to create a 1000w inverter. so what range of batteries i have to use…….

Comment from partha
Time May 13, 2011 at 12:08 pm

what type transformer i have to use for this purpose…. please tell me that…….

Comment from partha
Time May 14, 2011 at 8:49 am

i want to create a 1000watt inverter…. so what will be the input voltage and what type of transformer should be used at output side for this purpose????? plzzzzzzz help me as soon as possible……. this is becoz after getting info i will be going to start creating your inverter……so…………..

Comment from Habib cpi
Time May 15, 2011 at 9:26 pm

thank you i have sucsesfully made ur inverter circuit and i faced no problem thank u again for provaiding this circuit all the best

Comment from Peter Adzakey
Time May 17, 2011 at 8:49 pm

Hello, Good day and I thank you for you circuit diagram, I am having some few challenges with the circuit, I looked unto the circuit to build my device but I am not getting any output and also the frequency is I am getting is very high, I am getting around 11.05 MHz. Please what can I do to get a frequency of 50Hz and then 220 VAc output. Thank you and God bless you for you assistance

Comment from kennedy
Time May 18, 2011 at 5:09 pm

sir,how would the inverter will have its alternating current on the inverter?since there is provision for direct current.secondly,how is this power transistors goin to be arranged parallal?i mean how the will be conncted.thanks in antisepation of your response.

Comment from sanjay
Time May 20, 2011 at 1:13 pm

sir,I want 500 watts inverter transformer winding data,
I have 16 type 3 inches core,
suitable for 10 gauge and 12 gauge copper?

I want turns of winding for primary and secondary

please send me winding date of transformer

my mail is : “tda2040@gmail.com”

Comment from Haque
Time May 21, 2011 at 5:07 pm

Genius we r waiting for u’r automatic inverter schematic diagram with transfering switching circuit as well as relay circuit….u can’t upload yet man

Comment from partha
Time May 22, 2011 at 6:21 pm

hello. i m trying to complete this circuit but i m facing so many problems…. i don’t understand the connection of 7809…. in this circuit which pin of 7809 is output and gnd? pls tell me. and also there is no rating for the switch also pls help…… i have completed the circuit in a project board without transformer…. output should be 24volt ac… there is no output coming…… now what can i do in this situation……. pls help me out send me the solution at
“partha.de.s@gmail.com”

Comment from Litheko
Time May 26, 2011 at 11:06 am

Hello,i just want to build this circuit so i am stuck where to build it.can i use the bread-board?

Comment from abdul rehman
Time June 5, 2011 at 11:23 pm

I need help in the attached circuit ..
I have made this circuit , it works on the the 100w bulb and energy savers but it is not working on fans a and inductive load , i have also set the frequency around 50 hz with the help of a potentiometer but when i connect the 35w fan , the frequency at the output of the transfomer seems 230hz or sometimes 300hz ..please help me in this regards

Comment from sam
Time June 8, 2011 at 10:32 pm

i appreciate your kindness for your wonderful job please if i need to build inverter that power one ac, two television, a computer and eight energy bulb. what will be the required materials need for the job

Comment from Anuroop
Time June 10, 2011 at 5:29 pm

Hey there i want a circuit diagram to convert 4.5v dc to 4.5v ac can any one help me plz………

Comment from OLOYA
Time June 13, 2011 at 12:31 am

I would like to know how long does this inverter last when using a 12v car battery with a load of a 14″Tv set.
I built one,but just wanted to know which battery type could be the best.Highlights me about a lead & acidic battery,which one is the best for inverters!
Thanks

Comment from Eze Hyginus
Time June 23, 2011 at 10:18 am

I like your site and the way you explaine things.please send me how to make inverter tranformer and how to increase the power of inverterg. I will be glad if you reply.

Comment from AlanJ
Time June 23, 2011 at 7:09 pm

Hello Sir,
currently im facing difficulty to get the clearer image of the circuit, can you email me the more detailed and precise circuit diagram, and also explain roughly how the system work for the IC and the transistors, thanks! “alanjaynoe@hotmail.com”

Comment from rijul
Time June 24, 2011 at 12:05 pm

i have found a transformer in my old ups can i use that if yes then how?
it has 2 wires{thick} on one side and 4{less thick} on other
its no is
41-040034-01G
E184736
CLASS B DV-130-1
DAR PLUS SZ 0947

Comment from sriram
Time July 4, 2011 at 7:42 am

Hai sir,Thank you very much for sharing the inverter circuit diagram but i want more efficient inverter with less circuit board means the inverter should occupy a place of compass box so can we design any thing like that using available world of electronics.And can u please explain the functioning of inverter step by step

Comment from TIKI
Time July 5, 2011 at 10:25 pm

what if i decide to use a solar panel
with the inverter so as to charge the battery ? please what size should i buy and what capacity?
pls reply me it’s my project in school.thanks.

Comment from salik rao
Time July 6, 2011 at 11:51 pm

can i use this circuit for an output of 120v,if no than what should i suppose to do?

Comment from benard
Time July 7, 2011 at 1:22 am

Thanx for the diagram wanted 2 know how i can connect the transistors in parallel please asist

Comment from Yinyegha Tiki
Time July 7, 2011 at 6:59 pm

you said you will send automatic version(i.e including automatic switch to mains,charger,also how to connect to solar panel) of this inverter.please send,i will be very gratefull if you can send it to my mail.

Comment from Rijul
Time July 11, 2011 at 9:28 am

Hi genius a great circuit. I am having a 12/0 transformer plz give some modifications for the circuit or for the transformer

Comment from Adamuabbaadam
Time July 18, 2011 at 2:44 pm

Good day pls i am an electronics suppose little watt require to power 1-70 led can i use 12v -500mW transformer and reduce the transistors to 2-2 For the cct if i use 12v7 AH/20HR .For my workshop you like the idea? Best regard to you

Comment from Nkwenti
Time July 26, 2011 at 12:36 am

Hello sir.
Please i am really interested to build this circuit, Please i wish to ask if you can help give me some ideas like, How many turns will the secondary of the transfer be and also the primary, If i have this then i guess i will do it and also improve on my electronic knowledge.
Thanks for your time and hope to read from you again.
My regards.
Nkwenti.

Comment from Nkwenti
Time July 26, 2011 at 12:41 am

Dear sir.
Please can you be of any help to me with a good solar system circuit that can be used to charge a battery??
any help will be appreciated.
Thanks in advance

Comment from Parvez
Time July 30, 2011 at 2:13 pm

WHICH IC SHOULD WE USE FOR A INVERTER?

Comment from shafqat
Time August 2, 2011 at 12:10 am

sir will u plz tell me that why we need power supply in making ups. i mean what a basic purpose of this

Comment from TONY
Time August 3, 2011 at 2:06 pm

HI, I WOULD LIKE TO HAVE THE CIRCUIT DIAGRAM OF AN INVERTER CAPABLE OF SUPPLYING HOUSEHOLD ELECTRICITY AND CAPABLE OF RUNNING ELECTRICAL APPLIANCES LIKE TV,DVD,PC ETC. THANKS

Comment from moses
Time August 12, 2011 at 7:13 pm

pls can i my inverter with the following:-tv,radio,and video.

Comment from moses
Time August 12, 2011 at 7:14 pm

pls can i use my inverter with the following:-tv,radio,and video.

Comment from paul o
Time August 13, 2011 at 1:29 am

hello sir please tell me how to winding the transformer,gauge of cooper wire, both pry and secondary,and torns. send me anser

Comment from naresh
Time August 16, 2011 at 8:05 pm

hi sir…i have an idea of doing the solar inverter …so can u suggest what type i.e hw many watts of inverter shall start,and what type is suitabkle for that kind of circuit can u suggest me as soon as possible

Comment from kranthi
Time August 17, 2011 at 9:58 am

does this inverter produce hamming noise

Comment from G M Gudoo
Time August 25, 2011 at 11:29 am

Hello Sir,
i dont have the full conept of inverter. i tried a lot to understand the theoritical concept of inverter but failed. Now i request you please write a comprehensive note how differnt parts (components) of inverter works. So that i could understand each and everything about inverter. please Sir

Comment from Malik Sajjad Ali Asghar
Time August 27, 2011 at 7:51 pm

Please send me the simplest circuit diagram of 12vdc to 220vac Inverter because this diagram is bit difficult and i cannot understand it…….!

Comment from angel
Time August 31, 2011 at 1:42 pm

sir can i use this inverter for my tv set and dvd player? thanks

Comment from itoro
Time September 5, 2011 at 4:34 pm

what is the polarity of the capacitors? what is the position of the zener diode

Comment from Mike
Time September 6, 2011 at 8:54 pm

Thanks for this and your follow up to help people here, I’ll surely go on and try it. God bless.

Comment from survivalita
Time September 12, 2011 at 1:47 am

did anyone make this inverter? cos i didnt see the transistor to buy at my side so which can i use to make this inverter that will work.

Comment from sujeet kumar
Time September 13, 2011 at 6:29 am

what is 12+12/240(500w) please help me with detail in email id thanks………….

Comment from dolly
Time September 14, 2011 at 1:26 am

i am following this circuit diagram for my inverter but there is a problem for 60hz frequency 4047 demand resistor of 330kohm but here the rhestat is of 10k….kindly help me in this regard
thanx dolly

Comment from dolly
Time September 14, 2011 at 1:28 am

what is the current rating of transformer???

Comment from dolly
Time September 14, 2011 at 1:31 am

one thing more that is confusing why particularly 6 darlington transistors are used here???
dolly

Comment from ronniejoetorcuator
Time September 21, 2011 at 3:18 am

sir i want a inverter that have a sine wave inverter that will generate a 220v, 500watts and 60hz plz send to my email ronniejoetorcuator@yahoo.com as soon as possible sir

Comment from Dar
Time September 22, 2011 at 9:47 am

Hello Genius,

I often hear this is a 500W inverter, or 3000W inverter, etc. My question is, how do I verify the power of an inverter? Is there a meter of something I can use to measure? Or what can I check?

Thanks.

Comment from yasin
Time September 23, 2011 at 9:03 pm

I would like to now that if i give the output of same inverter as a input to the same inverter does it work even if there is no power

plz help me on this

Comment from isuru
Time September 26, 2011 at 2:31 pm

please give me 2000w, 2500w,3000w inverter circuit.

Comment from tayyab
Time September 27, 2011 at 6:27 pm

hi …. i wwnt to lnow …. what is the relation between tip35 and output current …… like i wish make 1000 watt inverter ….. how much tip35 will i use ?? … is there any formula for its calculation …. why you use 12 tip35 ???

Comment from amer
Time September 30, 2011 at 11:56 am

plz tell me about zenor diode 8.2v and watt???

Comment from kellvyson ck
Time October 10, 2011 at 3:13 pm

please my inverter red led blinks anytime i on without give any current but still charges please what is the problem and how can i fix it thanks

Comment from DEEPJYOTI
Time October 11, 2011 at 6:45 pm

can anybody give me the complete information of working process of various pins of CD 4047 and 7809 and various circuit element

Comment from natasya
Time October 11, 2011 at 7:19 pm

may i know detail about this inverter…how 2 produce on pure sine wave inverter

Comment from uday
Time October 13, 2011 at 3:35 pm

no clarification of connecting transistors in parallel

Comment from Ndayiteho Jinny-Ange
Time October 13, 2011 at 6:01 pm

Comment fabriquer le transfo 12v à220v?
Si on utilise la batterie d’automobile,va t elle résistercombien de temps?

Comment from vinay
Time October 18, 2011 at 6:46 pm

Good low cost inverter

Comment from DEEPJYOTI.
Time October 19, 2011 at 7:51 pm

plzz give me the complete information about IC CD 4047 andIC 7809 and various element and how does various pin of 4047 work

Comment from esp
Time October 20, 2011 at 2:03 pm

hello sir i have something question for, how can i drive the 1/2 hp 3 phase electric motor with 12/24 volts dc? can you send me a circuit diagram to my email add including the list of materials needed for this project thank’s. i hope you can help me this.

Comment from Stelios
Time October 30, 2011 at 2:41 am

Your Idea is really good. Thank!

I have a question: In case I need to make the out put voltage less than 220, lets say 80 Volt.

Which part of your idea I need to touch?

The 80 Volt I will make it DC.

Thanks

Comment from OVIE PETER
Time November 2, 2011 at 11:18 pm

Thanks for sharing your inverter circuit,please can you send me through my email above,how i can rewind 500 watts inverter transformer and the gauge?Thanks.

Comment from Hi Genius pls send your id
Time November 9, 2011 at 11:19 pm

TIP35C is not available in my place ?
Simple Circuit
Thanks

Comment from seand
Time November 10, 2011 at 2:49 pm

hi is there any chance, that you can send me the pcb board (without any parts on it)for this design. And how much will you charge me for it… thank you
sean

Comment from sridevi
Time November 10, 2011 at 8:45 pm

sir, in the transformer, the center tapping is connected to 0volts.but it is joined to the 12V line.then is the 12V line grounded?

Comment from kenneth
Time November 11, 2011 at 1:34 pm

Please do you have a schematic for a pure sine wave inverter 60W ?

Comment from David
Time November 11, 2011 at 7:31 pm

If anybody who have build the inverter to a certain level and it produce output should tell me how he connet LM7809 pin

Comment from seandell
Time November 13, 2011 at 2:25 am

Hi
Can you send me your measured specifications after you build the inverter only using two TIP35C
and could you send it to me as soon as possible

Comment from manu
Time November 16, 2011 at 6:37 pm

hi
am not getting d313 transistor
can you pls tell me an eqivalent for d313
waiting for your reply
thanks

Comment from Ranjit
Time November 20, 2011 at 8:44 pm

Sir, I am a B.Tech 1st semi E.E.E student. I want to make an inverter, plz help me.

Comment from theophilus
Time November 22, 2011 at 7:48 pm

pls sir i want to know the polarity, voltage, of the capacitor and how to connect transisrors in parallel.

Comment from shruts
Time January 8, 2012 at 12:17 pm

can you please suggest me alternative way to step up the dc voltage to the required ac output votage of 240v without the use of transformer for making the circuit more cost efficient?

Comment from sah newton che
Time January 9, 2012 at 6:49 pm

hi
i sah newton from cameroon i built the circuit and discovered that the power was less than 500w.what can i do to uptimise the power to 1000w

Comment from omer
Time February 6, 2012 at 9:37 pm

hi admin , the circuit is so cool i hav’nt seen such a simplest circuit before… but i want to know that how can i do the connections to add a relay in this circuit to make it automatically switch to main ???
please help me…….

Comment from Sallam
Time March 7, 2012 at 4:12 pm

Hi
Thanks for this circuit, it`s really good to use in our home.
But can you please show us a real picture for your project, if you have one collected?

Comment from anil
Time March 27, 2012 at 5:55 pm

which battery is useful for this circuit. i used 42ah battery but it doesn’t turns on computer and voltage is dropping more while connecting load.

Comment from Raji Kunle Nasiru
Time March 29, 2012 at 10:17 am

Hi Genius,
I noticed it’s been quite a long time you respond to people’s questions. I pray I’ll be lucky to get your response this time around. I’m an avionics student in Nigerian College of Aviation Technology, Nigeria.
I wouldn’t mind if you can be my constant online teacher on electrical engineering generally. You can locate me on my facebook as “Raji Kunle Nasiru”. I’ll be glad if you can accept this request frm me. Thanks.

Comment from Pascal Hariphson
Time April 5, 2012 at 11:53 pm

Thank u sir, I’ve control the fan noise, by using capacitor parallel to output, But still speed remain slowly, I need more information about my fan speed, pls sir help me if posible throught facebook or my email.

Comment from Bosah Edgar
Time April 16, 2012 at 5:07 am

Thank u Genius I am so overwhelm through your simplified 500W inverter circuit,though I hv read from the write-up here on how to up-grade to any wattage you desire. please can u send me a comprehensive cct diagram incorporated with the charging system and the automatic relay cct.
Thanks in a million .
I can’t wait to get your reply.

Comment from Binny bajaj
Time April 21, 2012 at 3:40 pm

Just to agree with Nigel – this circuit is indeed unregulated and of a very basic nature, so I would not advise using it for anything other than lamps, motors etc. Not for Sensitive Digital equipment like PCs, HiFis, DVD players etc.
As Nigel says, some form of feedback is necessary for a closed loop system that will be more reliable – the standard way is to use and isolated voltage as described, there is plenty of info/circuits around on the web, based around MCUs like PICs (using PWM module to control duty cycle), or timers like 555.

Also for some folk who are asking very basic questions about current/wattage/transformers and so on, I would not advise taking on a project like this that deals with mains voltages and can be lethal if mistakes are made. I would start off by reading a book on basic electronics and power supplies, then attempting a low voltage version of this (just use a different rated transformer) or similar projects (under 50V for all voltages), like a DC to DC converter, inductor based buck/boost regulator or a charge pump. This will help to understand the theory behind switching regulators/inverters, and testing/experimentation can be done safely.
Remember – electricity kills easily, if at all in doubt then give it a miss.

Comment from Wajira
Time April 25, 2012 at 8:21 am

I want to know that. How can we make transformer 12+12/240v (500w). What is size of it center pole. Primary and secondry wire guage and round.

Comment from himanshu gomasta
Time April 27, 2012 at 2:12 pm

i want to operate same type of inverter from microcontroller in replace to ic cd4047 can it be possible so that it can regulate by timer as automatically i studied about the programming of mcu would you help me please i want something new in this……………………..

Comment from IKWWUAGWU NWADINOBI
Time April 30, 2012 at 6:27 pm

PLEASE I WANT TO GET THE DETAIL ON HOW TO CALCULATE THE VALUE OF A RESISTOR USING THE COLOR CODE AND TOLERANCE
THANKS

Comment from zulfiqar
Time May 1, 2012 at 8:39 pm

sir can u send me full detail wiht diagram of 2000 watt of inventor circuit diagram

Comment from simon
Time May 26, 2012 at 11:57 pm

Sir, i have build the circuit but the output is between 120volt & 150volt but it should be 220volt. i have changed transformer but it still gives me 120volt output. please help me out.

Comment from Alessio
Time June 12, 2012 at 6:05 pm

Sir, I like your inverter, but as mine, it’s an early 1990 model, and there are no protection for the transistors.
If something go wrong, it will destroy at least one set of transistor (6 in your case), and if the driver transistor fail it takes with him one bank of power transistor.

So, if it start to fail, it’s very expensive.

Comment from imonin dennis
Time June 29, 2012 at 6:49 pm

please tell me more about 1.5kva pulse width modulation inverter,the use’s,function and the advantage and the disadvantage?

Comment from parag
Time July 11, 2012 at 9:25 pm

hi ur project is nice bt i hav some defficulty in it plz help me ,i hav confusion bout tip35c n one more thing hw to connect ic 7809 plz ans me fast m waiting

Comment from Anthony Uche
Time July 12, 2012 at 2:18 pm

The major things that determines capablity of an inverter are: the core size, the swg used for primary and secondary, the profile of your power transistors, the numbers of ur power transistors, the numbers of turns used, pulse width. if you are able to understand all dis then you can design inverter even upto 50kva. it is also possible to filter square wave to reduce noise to min.

Comment from regz
Time August 20, 2012 at 11:39 am

sir i want to build this inverter, but i have no device or frequency meter to set a frequency in 60hz.what value of resestor change to 10k pot to fix a frequency in 60 hz.thanks

Comment from Wale
Time August 28, 2012 at 12:30 pm

Good job bros. Pls can one use the diagram to assemble all range of inverter, only to change the transformer and increase our Resistor. You can send to my email

Comment from jafar
Time September 4, 2012 at 9:26 am

hello sir i want to build this inverter, but i have no device or frequency meter to set a frequency in 60hz.what value of resestor change to 10k pot to fix a frequency in 60 hz.thanks

Comment from sai teja
Time October 2, 2012 at 11:10 am

hi
i built up the circuit, it is working but the out voltage is only 200volts and on loading with a 60watts bulb the output voltage is dropping to 80volts i dont understand where the problem is please help me

Comment from mahesh
Time October 13, 2012 at 12:14 pm

what value of resistor change to 10k pot to fix a frequency in 50hz ?

Comment from sajeev kumar
Time November 3, 2012 at 10:28 pm

hello sir i want to build this inverter ,but i need to know about the ampere of transformer $ battery $ also automatic cut off battery charging $ change of supply that means when the main line will came at that time the inverter will cut off $ the absence of main supply the inverter will on position please can you help me to modified this circuit please give this reply as soon as

Comment from ranjit
Time November 7, 2012 at 11:01 am

hi sir , can i place two power transistor in parallel (TIP35C) instead of 12 power transistor….

Comment from John
Time November 8, 2012 at 1:37 pm

Sir, Please may you help me with a 2kva inverter circuit design and analysis as required in electrical engineering final year project work with the calculation (i.e. chapter 3)

Comment from jithin
Time November 21, 2012 at 1:01 pm

i have a ups transformer 600va but the input voltage is 7.5-0-7.5 is their any modification to use the same circuit

Comment from tapiwa
Time November 21, 2012 at 1:10 pm

thank you for the cct but can i also have another with a sine wave and pcb anb component lay out and explantion thank you in advance

Comment from Menaka
Time December 7, 2012 at 8:24 pm

HELLO sir .I build your inverter.but come one problem.one said TIP 35C Transister build too much temperature.I change the transformer said.but no difference result.My trancefomer is 3V,230V,3A.My praimery 3V said.I need step up 900V.so I put 12V to 3V said.My secondri said 230V.I can got 900V.no problem. Only problam is one said TIP 35C come very hot.I put one said 3 TIP 35C transistor.
Sir P help me as quick as thought.Send me my mail:menakaariyarathna@gmail.com .I wait for your reply.Thank you Sir.

Comment from more genius
Time December 9, 2012 at 2:22 am

Hi to every one! Genius last appearance here was last November 27, 2009 at 9:42 pm – 3 years ago, I do not know what exactly happen to him but i guess he or she is tired of answering basic question over and over again, or maybe very busy now in doing some business. You guys please do some research on the internet as you use to do for some reason and not being clog here. Anyway many thanks to genius who shared this basic, simple and low cost inverter circuit.

Comment from yeasin
Time December 20, 2012 at 12:34 am

bro i have 12-0-12 transformer in my inverter its so 220 volt but when i want to use 30 watt lam its really going down like 88 volt so please have u some advice for that
my inverter is 500 watt i built

Comment from GOKUL
Time December 30, 2012 at 6:33 pm

I made this same circuit but i have only 300w output
tell me….how many TIP35C is connected in parallel

Comment from william
Time January 24, 2013 at 9:12 pm

sir genius i am the beginner, and i would like to use your inverter. but i confuse it, how many amps of transformer are required? and the number of wire primary and secondary? and what is the position of wiring? is it the same position of a regular transformer or you want to reverse the primary and the secondary coil? i always waiting your reply sir. thank you somuch sir

Comment from owaes
Time February 15, 2013 at 6:43 am

sir i want output in sinosydol wave form,to run all kind of electrial equipment what can i do for that.
can u suggest me another circuit diagram. please sir

Comment from marcos
Time March 6, 2013 at 6:17 pm

5.5kva inverter has a problem,not peaking main power and also dc circuit breaker trips after sometime.what could be problem.
.thank you in advance

Comment from Bryskm
Time March 7, 2013 at 7:48 pm

how to invert 3v to 220v

Comment from Maung Pru
Time March 24, 2013 at 7:38 am

Dear sir, would you be able to help me on TRANSFORMER windings detail for this inverter ?

Regards

Maung Pru

Comment from yogesh kumar
Time May 23, 2013 at 2:56 pm

sir,how to make pcb of inverter.and give a ckt diagram of inverter inwhich all ncomponent are showed clerly..
thanks&regards
yogi

Comment from Abdur Rafay
Time June 13, 2013 at 11:54 am

only 6v zener diode is available at my place . Can you tell me its alternative? thanks.

Comment from micheal h japhet
Time August 2, 2013 at 2:46 am

thanks for your concern in assisting to share your product with every one please sir help me on how to produce a bigger inverter lets say like 30kva.
thanks waiting to read from you soonest.

Comment from Maushook
Time August 19, 2013 at 11:15 pm

Can I use a breadboard to make dis circuit???…how amperes can a breadboard withstand??

Comment from Ugbana
Time September 27, 2013 at 8:59 pm

Sir, how can i build a feedback charger that can charge the dc battery while the inverter is on.

Comment from Animesh
Time December 28, 2013 at 10:20 pm

please sir sent to me a automatic version of this circuit and how to make the input section a rechargable source.

Comment from Hadi SH
Time January 5, 2014 at 5:47 pm

In the Name Of Allah
Dear genius!
Thank you for your Share!
It is one of the best circuit That I see to now!
Thanks a lot!

Comment from abdul lukman joshua
Time March 13, 2014 at 1:44 am

pls, can i get a book on inverter repair. also a book on component readings and how to detect faulty components pls. help me out sir.

Comment from Adelusi Tosin
Time March 26, 2014 at 7:33 am

Thanks for your assistance. please sir i could i calculate the power stage of an inverter? on power transistor. thanks.

Comment from kamilu abdullahi
Time April 8, 2014 at 4:18 pm

please sir am a student from adamawa state poly. am about to do my project on the construction of 1.5kva inverter and I don’t really know where or how to begin, please I need your assistance thank u and god bless u…..

Comment from Engr.OMONIYI
Time May 29, 2014 at 12:43 am

Thank for the circuit.can ii charge the by itself.if not,pls i need circuit diagram that will charge the battery.pls i also need 1000w-3000w that i can do it by myself.thank

Comment from Ubochi Chinomso
Time July 19, 2014 at 3:22 pm

I have completely built the circuit above, using 12 TIP35C transistors, but could not get the require output voltage with 2-6Volts batteries and a microwave oven transformer as it’s transformer. What could be the problem?

Comment from Engr, omoniyi olatunde
Time July 30, 2014 at 5:32 pm

I need pin detal for trasitors D313,TIP35C,7809.can i use 20 power transitor for 100w,what will be wait of the transformer.which batttery will be good for it.thanks

Comment from Emmanuel
Time October 7, 2014 at 12:43 am

pls i need all you to post all the apparatus needed for a 2kva inverter and the no of the transformer windings(primary and seconday coils) i will be happy if you could reply back.
Thanks on anticipation

Comment from Chucks ichoku
Time October 30, 2014 at 11:22 am

Am very happy, atleast av gotten all the answers i need to knw, but one thing is confusing me, hence connecting those TIP35C in parraell, does it required any values of resistors ? ? ?

Comment from JOSEPH
Time December 27, 2014 at 2:32 pm

can i used IRFZ44N

Comment from jun
Time February 26, 2015 at 8:16 am

hi sir,i built ur iverter circuit and it works on ligthing,t,v but not on electricfan why,my inverter is 1000 watts my transformer is 45 amp,12 volt 40ah deep cycle battery

Comment from tamil
Time March 14, 2015 at 12:20 pm

Hi i have one doubt transformer center input is you mentioned “0” Volt but you connected 12V at battery, so kindly explain that behavior.

Comment from Generalomosco
Time March 29, 2015 at 8:29 pm

Please what ic or transistor can i use to replace ic7809 simultaneously can i use 7.1v 0 7.1v transformer for this circuit?

Comment from Emma
Time April 2, 2016 at 4:00 am

Thank you for building and posting this inverter circuit. Please, I want to know if I can use HCF4047 in place of CD4047. And also if I can use high current mosfet or power transistors to drive the transformer.

Comment from Emma
Time April 2, 2016 at 4:05 am

Thank you for building and posting this inverter circuit. Please, I want to know if I can use HCF4047 in place of CD4047. And also if I can use high current mosfet or power transistor to drive the transformer.

Comment from BENARD
Time May 16, 2017 at 10:06 am

Hallo sir!!would you show me the whole 12 tip35 transistors connected in parallel?Thank you.

Comment from Krishna prasad
Time September 26, 2017 at 10:41 pm

By increasing the number of tip can we increase the wattage rating……plzzz reply sir i am waiting….

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