Joule Thief Charger. Schematics for the battery to battery charger. It can increase the voltage of power source by changing the constant low voltage signal into a series of rapid pulses at a higher voltage.
My joule thief uses twisted network wire passed through a small ferrite core. I use 6 turns of wire. You most commonly see this kind of circuit used to power leds with a dead battery.
A joule thief circuit is basically an efficient self oscillating voltage booster circuit built using a single transistor resistor and an inductor which can boost voltages as low as 0 4 v from any dead aaa 1 5 cell to much higher levels.
Jan 17 2016 in this project jason poel smith shows you how to make a low voltage battery charger using a joule thief circuit. How do we compare. The joule case can add up to 7 battery modules on to any control module for maximum power in your home office or outdoor adventure. Build your battery system.
