Let’s make Simple Li-ion Battery Charger Circuit with auto cut off when fully charged. To revive batteries that dead or so old. And using common components NE555, TL431. Read more
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
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 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
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