Confirmation of OU devices and claims

[AlienGrey]

OK, I'm willing to learn AG. How do  I make a non-linear air coil? Kindly show me the BH curves or any other data showing results of your non-linear air coil as I would like to make one and test it myself.

Kind Regards

A Tesla coil or nonlinear resonance is a type of series resonance in electric circuits which occurs when a circuit containing a nonlinear inductance is fed from a source that has series capacitance, and the circuit is subjected to a disturbance such as the opening of an electronic switch BEMF.
It can cause overvoltages and overcurrents in electrical or electronic circuitry and can pose a risk to equipment and to operational personnel in close proximity.

This is getting off topic I see no advantage in any further discussion as it can work for me in my experiments without going off on a tangent and disrupting the thread further.

[Vortex1]

A Tesla coil or nonlinear resonance is a type of series resonance in electric circuits which occurs when a circuit containing a nonlinear inductance is fed from a source that has series capacitance, and the circuit is subjected to a disturbance such as the opening of an electronic switch BEMF.
It can cause overvoltages and overcurrents in electrical or electronic circuitry and can pose a risk to equipment and to operational personnel in close proximity.

the same none linear tactic is actually used in air spaced coils and works should anyone care to try

AG;

I agree that there is such a thing as a non-linear inductance, and such a device usually has some type of saturating ferrous core.

I would be very interested in such a non-linear air core inductor that is constructed of an air core alone without ferrous material.

So I will ask again for your actual non-linear inductor BH curves or supporting tests that show your air core to be a non-linear inductance.

Show me the circuit containing a non-linear inductance that is made up of an air core alone. That was the original point of argument.

Test data is the requirement here, not dissertation on non-linear resonance. Short of data and accompanying test circuit, I'm not interested in going further with the argument.

Regards

P.S. Itsu, sorry if this seems a derailment, but it is an important point that maybe deserves it's own thread.

[gyulasun]

...
This is my interpretation of the test result.
...

Hi Arne,

I also agree with your reasonings but you need to consider some facts and then rethink the situation.   

Itsu wrote in his post #352 that he checked the harmonics with the Spectrum Analyzer by picking them up with a probe near by the TX coil.  So this means a loose capacitive coupling through the air between the TX coil and the probe, ok? The probe had no any direct (galvanic) connection with the TX circuit. 

So this means that we cannot consider the displayed harmonic levels of the TX square wave drive to be good for a correct comparison with the harmonic levels taken directly across a receiver (RX) coil output.

The explanation is that the harmonic frequencies go through the capacitive coupling i.e. via a (low value) capacitor with an increasing amplitude because capacitive reactance (impedance) is inversely proportional to the frequency. So the higher the frequency the lower the capacitive reactance becomes, so the less extent it attenuates the harmonic amplitudes.   

And you need to add to this another fact as you mentioned: the TX and RX resonant LC circuit combination constitutes a mutually coupled two pole band pass filter with an increased selectivity, hence the harmonic levels are inherently attenuated in a higher degree than they are by the TX LC circuit alone, the latter can be considered as a single pole band pass filter.

To check the harmonic levels in the TX circuit alone, the Spectrum Analyzer ought to be connected to a 50 Ohm tap on the TX coil, matching the resonant high impedance to the 50 Ohm input impedance of the analyzer. OF course, the 50 Ohm input impedance of the analyzer would be transformed into the TX LC circuit, reducing its loaded Q to a certain degree but that would still give more correct harmonic amplitude levels than the capacitive coupling does.

Your question:
        " So now is the question how to solve that dilemma? "

Well, the solution to this dilemma should come from the originator(s) of the idea of transferring power wirelessly by such setups, this is what I think. 
But in the video demonstration this dilemma was not even mentioned, maybe it is not considered a problem, so is it needed to solve? Even so the claim is COP >> 1 anyway, so no offense but does the dilemma matter?   

Gyula

[AlienGrey]

AG;
I agree that there is such a thing as a non-linear inductance, and such a device usually has some type of saturating the ferrous core.
I would be very interested in such a non-linear air core inductor that is constructed of an air core alone without ferrous material.

If you insist on faffing around disrupting this thread please create or select one as such to do so.
It's simple, a coil within a coil controlled by circuitry thus can be made to behave in a none linear manner.

[ramset]

AG ....one of the wonderful things about a moderated topic ...is the ability to keep it neat and move interesting off topic  discussions to another thread.
If Your contribution above has some relevance to a possible gain mechanism or some as yet unspoken value to experimenters here ?? IMO it would need more investigation , and I am grateful that someone would take the time to investigate this and share with the community ?

Grumage  feel free to remove this post