Re Bifilar coils. At one time I was having an intelligent conversation with Kapanadze and asked him about the possibility of miniaturising his device. We discussed the possibility of having a self powered vacuum cleaner. He said that it posed no problem to his device, and the earth wire could be replaced with a circuit, namely the negative terminal of a small lead acid battery. (That is pure Tesla, anyway). I asked him if it was possible to have a self powered table lamp: He said no problem. Self powered heater?: no problem.
I then asked him if it was possible to micro-miniaturise his device  inside a CFL lightbulb. He thought for a while and then said it would be impossible because of the coil windings. He said I may have noticed that his coil windings were bifilar, and that he felt  he could not miniaturise these to fit inside a cfl lightbulb. So I think we have a clue here as to the workings of his device.
 

If you look at the coil in the video from 2007 , where he was shows a variant of its generators in the house , the upper coil (which is like an inductor) is wound double wire that comes out of a box, and two ends connected to the load.

This, in my opinion, indicates that the coil is a distraction. And the execution of any one coil is not a Tesla transformer

I think we are all agreed that it is not a Tesla transformer. That fooled the forum for quite a while. However in my opinion it still has a function - maybe part of the loop back system, maybe lowering the voltage for output, maybe even working in reverse to step up the voltage - or a combination of all of those. Although it may not be "the secret", I believe the coil is a conventional part of the system. Maybe by having output and input on the same coil - resosnance is maintained.  I still think the secret is a "doctored" transformer.

3. and selected capacitor so that the UC and UL, are equal.
I think it is necessary to start with a 15 uF capacitor.

Something must be wrong with that value.

I have done a resonance test with exactly this transformer and I get resonance at 50Hz with a 1.34µF capacitor (3 × 1µF in series parallel to 1µF) on the 230V coil. Both 115V coils not connected.

As frequency generator serves a XR-2206 (VCO) set to 50Hz sine wave. The output voltage is 4.3V effective (via push-pull output stage), the oscilloscope shows 12V peak to peak without resonance (direct connected), current is 2.5mA. With resonance (capacitors in series) the voltage on the primary 230V coil goes up to 14V effective, the oscilloscope shows 38V peak to peak, current is 6.14mA.

According to the LC Resonance Frequency Calculator this means the coil of this transformer has an inductance of 7.56 Henry. Measured on the coil the resonant voltage is 3.17 times higher than without resonance. The resonant current is 2.46 times higher than without resonance.

When resonance causes a higher voltage but at the same time draws a higher current from the supply, then where is the Free Energy?

Seems I got my wires crossed, hence what to do next based on these findings?

Energy from resonance:   Go back to Tesla's earthquake machine.
You have the resonator and the resonated.
The resonated was the Skyscraper. The resonator was the small solenoid.
We need to apply the same reasoning to electronics.

I agree. I have thought on this some.

A capacitor is a spring
A coil is a mass

The girders and structure in the building have spring and mass, so it can be considered an LC circuit. Big low freq tuning fork of sorts.

Now, the area on the building that Tesla held the ping box is low on the tuning fork lets say. So I suppose we could divide the top and the bottom of the building as if it were the primary few turns of a transformer and the top of the building the many turn secondary where our HV swings occur.

MaGs

Energy from resonance:   Go back to Tesla's earthquake machine.
You have the resonator and the resonated.
The resonated was the Skyscraper. The resonator was the small solenoid.
We need to apply the same reasoning to electronics.

The energy in a linear resonator is accumulated, not generated. In a high Q resonator, the energy can accumulate to the point of resonator destruction. This does not mean that the energy in the resonator exceeded the energy delivered to the resonator.

The energy in a linear resonator is accumulated, not generated. In a high Q resonator, the energy can accumulate to the point of resonator destruction. This does not mean that the energy in the resonator exceeded the energy delivered to the resonator.

Well, did the total amount of shaking and motion of the building that Tesla's  tapper box shook, add up to the total amount of energy induced by the tapper, as many times as it tapped? ;]

Would the movement of the buildings girders near the top, have enough force, back and forth, to rewind the spring in the tapper box, to keep the show going all night long? ;]

Mags

Something must be wrong with that value.

I have done a resonance test with exactly this transformer and I get resonance at 50Hz with a 1.34µF capacitor (3 × 1µF in series parallel to 1µF) on the 230V coil. Both 115V coils not connected.

As frequency generator serves a XR-2206 (VCO) set to 50Hz sine wave. The output voltage is 4.3V effective (via push-pull output stage), the oscilloscope shows 12V peak to peak without resonance (direct connected), current is 2.5mA. With resonance (capacitors in series) the voltage on the primary 230V coil goes up to 14V effective, the oscilloscope shows 38V peak to peak, current is 6.14mA.

According to the LC Resonance Frequency Calculator this means the coil of this transformer has an inductance of 7.56 Henry. Measured on the coil the resonant voltage is 3.17 times higher than without resonance. The resonant current is 2.46 times higher than without resonance.

When resonance causes a higher voltage but at the same time draws a higher current from the supply, then where is the Free Energy?

Seems I got my wires crossed, hence what to do next based on these findings?

I had no generator, so selected the capacitor empirically.
If I understand correctly, you have from the generator 12 volts.
Then the power consumption from the generator is equal to 6.14 miliamper * 12V = 0.074 watts. Reactive power in the coil is 6.14 miliamper * 38Volt = 0.233 watts.
Ie reactive power exceeds the power consumption from the generator in 0.233 / 0.074 = 3.15 times

Power consumption from the generator without resonance equal to 2.5 miliamper * 12V = 0.03 watts.
Then the reactive power in the coil at resonance exceeds the power in the coil without resonance 0.233 / 0.03 = 7.77 times.

Check my calculations. If there is an error please inform.

Regards

xenomorphlabs
Please say about developments of Hector. Very little information I found on it.

Regards