3 LED Chaser circuit using transistor without IC
Let’s make 3 LED chaser circuits using transistors without ICs. We will learn how transistors work as switches with capacitor discharge. Read more
Lightings
Include: LED running lights • LED flashers
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Outdoor solar lights circuits
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
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
Simple Automatic Motion Sensor Light Circuit
This is a Simple Automatic Motion Sensor Light Circuit. When we use battery electricity for lighting—even with LED light bulbs that consume very little power—for an extended period of time, it also drains much of the battery’s power. So, is there a way we could save as much electricity as possible? In some places where … Read more
Simple Solar light circuit version II using Li-ion battery
Previously, we had built the Automatic Solar Light circuit and had been using it for many months. It has fair efficiency for everyday lighting. But this circuit has two problems: a dim light level and batteries that are hard to find and quite expensive. But now my daughter has built this Simple solar light circuit … Read more