Sunday, November 8, 2015

Running 70 LEDs by 1.5v AA battery

By this circuit you can run more than 70 LEDs by an AA battery.
The circuit draw 100 to 200 mA from the battery. you can find the choke coil from a mobile charger or old flash camera or rechargeable fly zapper.

Parts list:
Transistor 2N2222
Resistor 1k
Chock coil

Battery 1.5v

1-test the output voltage before connecting that to the parallel LEDs. (2-3v is good)
2-using bigger transformer(choke coil) and power transistor maybe raise the output voltage up to 100v.

Running 70 LEDs by 1.5v AA battery