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For the term "joule thief freq adjust".

Joule Thief Lights 400 Leds On Single AA Battery!

My modified Fuji AA Joule Thief circuit illuminating 400 leds using an old AA battery for power. For more info go to Overunitydotcom in the joule thief topic. Thank you. This is NOT free energy but it is a very efficient circuit that I can use to obtai…

Joule Thief Lights 300 LEDs On Single AA Battery!!

My modified Fuji AA Joule Thief circuit lighting 300 LEDs! Each LED requires 3.5 volts to light. I am still using the old AA battery that you have seen in all of my other videos. For more information, go to Overunitydotcom in my Joule Thief topic. Thanks.