3 Solar Light Circuit
This is Outdoor solar lights circuits made by my son, at day solar charge to battery then night LED light up without AC line, Relay control the solar current […] Read more
Experimenting with LM317 as power switch controller
Learn how LM317 can be a power switch controller instead of a transistor. Try a simple power pulse generator circuit.
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Creating a simple 1.5V LED Flasher circuit
Creating simple 1.5V LED flasher circuit, With just one AA battery, it’s efficient enough to last for 1 year. and uses very few components. Read more
Thanks Lennie Zink and Kathy Zink
I am writing this article, to our deepest thanks to our dear friends, Lennie Zink and Kathy Zink. If there is a mistake, I take full responsibility. And if there is any good only praise and honor our great GOD. It’s amazing to have internet friends with someone. Going back about 3 years ago, I … Read more
Recycle Free Li-ion battery from E-waste
We are going to show how to recycle free 18650 Li-ion battery from electronic waste. Our experience using it for almost a year, it runs well. Read more