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 Simple Handheld Electronic Pulse Massager

Tuesday, May 6th, 2014

This is simple handheld electronic pulse massager. Which helps relax the muscles by electric pulse waves. Ideal for those muscles all the time, such as standing or hand throughout the day. This machine is small And is powered by 9 volts battery, so it’s safe. You can also customize the frequency and strength as well. […]


 Nicd and Ni-MH battery charger with automatic cuts off

Friday, May 2nd, 2014

If you need a Nicd and Ni-MH battery charger that automatic cuts off. Which is simple circuit, this project is good ways. It use IC-AN4558 OP-AMP IC. Detection of battery voltage when the power is full. And would be cut off immediately. It is a simple project And budget. How does it works. We are […]


 20watt Integrated Amplifier by TDA2005

Wednesday, April 30th, 2014

This is small integrated amplifier that many people link it. We use one TDA2004 or TDA2005 IC to increate very nice sound for really beginner. – Many of you would have made a small amplifier. With low are expanding. But the sense that sound loud not satisfied. Need to look for higher power amplifiers. – […]


 12V to 5V 3A DC converter step down Regulator

Tuesday, April 29th, 2014

My friend bought a digital camera that can take pictures and videos as well. But he tell that it have restrictions is available not long the battery runs out. He did use an external battery, but the size 5 volts not had to modify the battery lead acid 12 volts reduced pressure down to the […]


 How to use AAA battery in parallel to increase current.

Monday, April 28th, 2014

I get a lot AAA 1.5V battery from my friend. If still store them, will not have any helpful. Now I have a wall clock which use AA battery size. So cannot use with them. But it not hard over than our endeavor. We need to use AAA battery holder. But I cannot buy it […]



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