1.5v LED flashlight circuit

This circuit is an LED flashlight that can run with 1.5 volt AAA battery. this circuit is easiest for beginners because the coil is available in CFL lamps circuit and don't need to make that.
I used it for running 20 white LEDs, you can add more.
By 20LEDs it draw about 100 to 200mA current from battery.
Minimum voltage that need to run LEDs by this circuit is about 0.9v.
I test this circuit with different coils and i find the circuit works perfectly with almost all ferrite coils, so you can make that with any available ferrite coil and maybe give better results.

Parts list:
White LED(20pcs)
Transistor S9012
Transistor S9013
Coil 100uH
Capacitor 500pF 
Capacitor 220uF 10v
Resistor 5.6k
Resistor 10k
Resistor 100 ohm
1.5v AAA battery


1.5v LED flashlight circuit


1.5v LED flashlight circuit


1.5v LED flashlight circuit

The following picture show you the coil that available in each CFL lamp, the big coil  in right side give you better result than that circular small coil and maybe can run more than 100 LEDs easily.

1.5v LED flashlight circuit


Location: Iraq

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