STEORN DEMO LIVE & STREAM in Dublin, December 15th, 10 AM

[Omnibus]

I was able to take out the secondary coil, tried it and now it's better than ever--2.6 overunity at 700kHz. I know @broli wants pictures but I'll describe it in words. First, I took apart the metal core the way @LarryC explained. Then I twisted, cut and pulled out the plastic spool to expose the inner side of the secondary coil, after which I gently separated one of the windings and carefully started pulling out from within that thicker secondary coil wire. We're down to bare bones now, the effect is greater than it was with the laminated core and with the secondary coil (if we think of it also as some sort of a core) and what remains is to see exactly how that magic primary coil is wound. @broli wants me to turn into a surgeon but we'll see if it would be possible. Question is--by removing all that aren't we decreasing the sources of the possible parasitic capacitances? If so, that seems contrary to the the capacitance theory because the OU increases.

[Omnibus]

This is exactly the reason why I made a remark about the leading current.

Regarding inductance meters: they are only useful when measuring air coils.
And even then it's just an indicated value, since the inductance is measured at only one specific (unknown) frequency.
If one uses metal cores, the indication is very unreliable due to the non linearity of the core materials.

I agree but remember we have already removed the core and are dealing with an air coil. This specific air coil is yielding OU unlike any other air coil I've tried. Would be interesting to measure its capacitance at 700kHz. That would resolve the issue.

[broli]

I was able to take out the secondary coil, tried it and now it's better than ever--2.6 overunity at 700kHz. I know @broli wants pictures but I'll describe it in words. First, I took apart the metal core the way @LarryC explained. Then I twisted, cut and pulled out the plastic spool to expose the inner side of the secondary coil, after which I gently separated one of the windings and carefully started pulling out from within that thicker secondary coil wire. We're down to bare bones now, the effect is greater than it was with the laminated core and with the secondary coil (if we think of it also as some sort of a core) and what remains is to see exactly how that magic primary coil is wound. @broli wants me to turn into a surgeon but we'll see if it would be possible. Question is--by removing all that aren't we decreasing the sources of the possible parasitic capacitances? If so, that seems contrary to the the capacitance theory because the OU increases.

So no more core and no more secondary. Now we're down to a single inductor?

[Omnibus]

@broli and @All,

Here are some screenshots taken with the magic air core, showing current leading the voltage (@teslaalset, in particular, will be interested to see that). One may consider the current leading the voltage as an indication of parasitic capacitance kicking in, however, the effect at 90kHz where that I-V phase shift effect is seen (it flips from 80 to 90kHz; at 80kHz current is still trailing) is dramatic underunity--0.01. The underunity is pronounced at 100kHz as well--0.07, despite the observed current leading voltage. OU kicks in at around 200kHz where it is 1.07 while at 700kHz it is already 2.65. This is an air coil, mind you.

[Omnibus]

Now, notice this, the phase shift (which one may think is due to capacitance kicking in) whereby current is leading the voltage decreases with frequency but the OU effect increases. Indeed:

90kHz    2.8us
100kHz  2.08us
200kHz  1.8us
700kHz  0.328us

If we follow the capacitance theory it should be the opposite--the I-V phase shift should increase, indicating greater capacitance leading to a greater apparent OU. It seems the above is one piece of experimental evidence that goes against the theory that parasitic capacitance is being developed at higher frequencies which acts as a shunt and therefore the current we're observed and attributing to Ohmic losses is overestimated.