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For the term "new joule thief circuit".

3 Ultrabright Leds Powered By Joule Thief Ferrite Bead Circuit

This is a video of 3 LEDs (2-265000 MCD and 1-26500 MCD 10 mm Ultra brights)running from a single AA battery. Each LED requires between 4 and 4.5 vdc and over 100 mA’s each to light. For more info, see overunitydotcom in the Joule thief topic. This is …

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…