Super Efficient Joule Thief DIY.

Super Efficient Joule Thief DIY to steal all the last energy from a battery and without any Toroid coil. Save your time to get more effect. In this project i will shows you the combination simplicity of the circuit and a few variants on the design which add extra components to improve efficiency to make one. The materials of this project is a single, general purpose small NPN 2n2222 transistor A331, Resistor Ohm 1/4W,10nf ceramic capacitor 103, AO90 Germanium signal diode, 5mm round white led, 20 mA, 3