Research Cell

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