Days and nights are there due to some reason. Days are to work and nights are to rest. It is a history of human being that whenever we deviate from natural path, we have to face the consequences. Nightwork is getting common these days. In order to maintain higher status, we sacrifice our comfort. To get more dollars, we sacrifice our sleep and get engaged in a night shift work. Some people think that light night shift jobs are not Read the rest of this entry »
Filed in Health •
Laptop computers are becoming necessity for those people who remain on travel. Secondly, there are some countries where power outages or load shedding is common and therefore people use laptops more often to avoid data loses and to keep working during power outages or load shedding. In either case, it is very important to increase laptop battery life especially when you don’t have access to power for long intervals and you cannot charge your laptop.
I have an IBM laptop which had a battery backup time of 2 hours and 10 minutes. This battery backup time was very short for me therefore I have done some experiments to increase this battery time and surprisingly Read the rest of this entry »
Filed in Computer •
Infrared or IR Illuminators are widely used to improve capturing quality of security cameras fitted in dark areas. Just like human eye, cameras are also not capable of recording movements in dark places but unlike our eyes, most modern cameras can capture infrared or IR light. For example, if you have a camera in your cell phone and a TV or any other device’s remote control then you can do a quick experiment. Read the rest of this entry »
Filed in Electronics • Tags: Circuits
First of all, let me explain what PZEV cars mean. PZEV is a technical term which is abbreviation of Partial Zero Emissions Vehicle. Any car which has 15 years of life warranty with 10,000 Kilometers drive each year, or in other words 150,000 miles warranty and zero evaporative emissions from its fuel handling system can be called a PZEV provided that it meets SULEV tailpipe emission fixed standards. Read the rest of this entry »
Voltage regulation means to prevent the voltage from dropping down or rising above a specific value. A 12 volt regulator circuit will provide exactly 12V under load as well as without load. On the other hand, an un-regulated 12V power supply output voltage with drop under while the load will increase and will rise when not under load. For example, an un-regulated 12V power supply can output 14V when not under load and can drop the voltage to 11V when under 1A load and 10V when under 2A load. This rise and drop of voltage in un-regulated power supplies can sometimes burn sensitive electronics equipments. Read the rest of this entry »