Debunked by Dave Jones

162

01:39:02

This circuit was featured in a video by Dave Jones who debunked some retard claiming he found free energy. The transistors create an oscillator and the inductor turns into a crude boost converter the makes the LEDs pulse. Some people...
https://youtu.be/hoqF3gjLIyI

published 9 years ago

thebugger

9 years ago

Yes it's called a blocking oscillator aka Joule Thief

faceblast

9 years ago

it's "free" in the sense that you can reuse an old aa battery that's no longer useful in a high power device and run it down to 0.7V

thebugger

9 years ago

Germanium transistors can work with base voltages of down to 200mV, so even a lemon battery can power a properly designed joule thief. The idea is, that to boost the voltage it has to draw more current than uaual, so the efficiency is still less than unity. The problem is that when batteries are close to being completely discharged, they tend to not give enough current to run the circuit properly (the internal ESR increases), and sooner or later it's gonna die out.

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