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Lawrence Tseung Fleet circuit Joule Thief power measurement analysing test PART 2/2

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This is the second part of the power measurement scope tests of the Lawrence Tseung Fleet Joule Thief circuit done by Stefan Hartmann, the admin of OverUnity.com .

http://www.overunity.com/12686/is-joule-thief-circuit-gets-overunity/1065

Lawrence claimed the circuit to be COP=1.75, but in my tests it was only around 0.5
or less, so no overunity.

I measured the constant battery voltage with a DVM and the input current on a 1 Ohm shunt. Then I used a graphical folding and interpolation method to calculate the average DC input current, so I could just multiply voltage x current.

The same I did on the LED output.
There was also measured the output current through the LED on a 1 Ohm shunt
and the voltage across the LED.
Then I also used a graphical folding method to see the average values under the waveforms, so one could again just multiply these average DC values to calculate output power.

Please post your comments below.

Many thanks.
Regards. Stefan.

Link to this video:
http://youtu.be/LszgQSa51KY

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