Joule Thief Shorted.10 times more light.

This joule thief works much better when the ferrite core is shorted with a wire – a magnet or a capacitor. I adjust the trim capacitor for the best resonance. The magnet must be adjusted in strength. Here are 9 pieces best. Try it on other jouel thief and they oscillate much better. 10 times more light on LEDs.

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skema joule thief darlington

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