Is joule thief circuit gets overunity?

[conradelektro]

Hi Lawrence,

So it will be a few days ahead when I will have time to test the boards.

But stay tuned.

Many thanks again.

Regards, Stefan.

@Stefan: I hope the men in black will not get to you before you can test the mysterious boards.

May be the men in black control the German tax office and they will collect an enormous tax from you in order to prohibit a test? 

I really hope that we see some intelligent tests of these boards.

Greetings, Conrad

[Pirate88179]

I am sorry to say that, with all of my experience,  the JT circuit is NOT overunity.  As I have said in the past, it MIGHT just be a part of an overunity circuit but, not O.U. by itself.

I have to hand it to Lawrence for his efforts.

We shall see.

Bill

[PiCéd]

Is the joule thief would acts as a reducing consumption?
I have noticed that with the primary plus a secondary in the toroid, when I short circuits the secondary the intensity of the primary decreases.
This may also depend on the non-inductive resistance of the secondary.

[ltseung888]

I am sorry to say that, with all of my experience,  the JT circuit is NOT overunity.  As I have said in the past, it MIGHT just be a part of an overunity circuit but, not O.U. by itself.

I have to hand it to Lawrence for his efforts.

We shall see.

Bill

@Bill,

Can you tell us the oscilloscope you use and the circuit diagram you use to measure Input and Output Power?  I know that you have built many JT with impressive performance.  But have you used the oscilloscope to check them for OU?

[Pirate88179]

@Bill,

Can you tell us the oscilloscope you use and the circuit diagram you use to measure Input and Output Power?  I know that you have built many JT with impressive performance.  But have you used the oscilloscope to check them for OU?

I have a tektronics o'scope circa 1980's (2213 dual channel) but the real proof is that I have not been able to make a self-runner.  That, to me, is the real proof.  It would eliminate any arguments on measuring p in and p out, etc.  If it self runs...then we can look at the cop values.  If not, why waste time with  measurements?  Folks will only argue that they were done wrong anyway.

If it self-runs, then look to putting a value on it.

Bill

PS

Also it is good to note as Xee2 has said, that LEDs do not follow Ohm's law:

http://www.fas.harvard.edu/~scphys/courses/15b/2008/15b_2.pdf