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For the term "joule thief freq adjust".

Modified Fuji Circuit Joule Thief circuit lighting 40 watt tube with AA battery

Here we are illuminating a 40 watt tube from a single AA battery. This is a modified version of Josepino’s disposable camera circuit. I have used this same circuit to light 2 of these 48″ tubes end to end. I have also illuminated 400 leds with this sam…