DIY inductor coil from compact Fluorescent Light
Hi Friends. In the present a small electronics invention. Most of these types of switching circuit. is… An Inductor (or coil) is one device To create problems for me To buy or use. But it is only simply a wire wound into a coil and usually around ferrite core because …
Simple solar radio battery charger
This is the simple solar solar radio battery charger circuit. A solar cell radio used a 3V (or two 1.2V) Ni-Cad battery in it. The battery can not be removed. It use a mini jack socket for charging. Its quiet difficult to find such a voltage charger. Here is the …
Automatic OFF 12V Battery Charger by power SCR
This stop current give battery, when Voltage of battery tall arrive at the level that load with full speed already ahead for protect something charger too much poor distilled dry water. This circuit can is usable very wide can use with battery many model. By choose diode and SCR at …
DIY Super Bright LED USB Laptop Light.
Now I’m very busy because During this semester’s new son and charge new school. So It must be very adaptable. Sleep faster. And Youngest daughter began to grow and frequently wake up at night to milk. I have to take the laptop to work on the bed always. But the …