Bifilar pancake coil overunity experiment

[TinselKoala]

Unfortunately I am now up against a Rigol bug. One of the scope's built-in measurements is the "period area". If I select this measurement for CH1, say, it is supposed to give the area above+below the zero line. If the number is positive there is more area above the line than below, for a single cycle of the waveform. Negative means more area below than above. But the bug is that when I turn on another channel the value for the first channel area changes radically, even changes sign. So the numbers reported by the automatic measurement are untrustworthy in this case.
I will be contacting the usual bug reporting places about this. It's a pretty severe bug.

[TinselKoala]

There is more than one way to skin a cat though.
Here I've told the scope to integrate voltage wrt time across one full waveform. The fact that the integral does not "quite" return to zero indicates, I think, that there is slightly less area in the negative part of the waveform below baseline than there is in the positive part above the baseline.
Can this measurement be trusted? I really don't know. I've gotten to where I don't trust any measurement from a single source until I can validate it some other way.

[ayeaye]

From your previous screen image (the one before the last one), figure below.

L 400 7200 1300 6200 *
L 1300 6200 2200 5600 *
L 2200 3300 3000 4100 *
L 3000 4100 3600 4500 *
L 3600 4500 4300 4700 *
L 4300 4700 5100 4800 *
L 5100 4800 5900 4900 *
L 5900 4900 7100 5000 *
L 400 2300 1200 2500 *
L 1200 2500 2200 2500 *
L 0 5000 7500 5000 *
L 0 0 7500 0 *

I didn't know the real values of your resistors, so i used 100 and 1k.

#Time for gschem unit in ns
XU = 5.0
#Voltage for unit for ch 1 and 2 in mV
YU1 = 0.5
YU2 = 5.0
#Resistors 2 and 3 resistances in ohms
R2 = 1000.0
R3 = 100.0
#Frequency in Hz
F = 30317.2

The output was the following.

Input power was 8.569 uW
Output power was 7.196 uW

As you see, no overunity, as i also said. Yet, input is not much greater than the output.

I would say that the method works quite well now and the result is likely close to real.

[TinselKoala]

The resistor values I measured with the Fluke 87-III DMM in high resolution mode:
R1 = 987.4 ohmsR2 = 987.2 ohmsR3 = 99.91 ohms
meter leads shorted together = 0.74 ohm
(Now that is screwed up. I entered each R value on a separate line, but the "new forum" software did that to it.)

R1 = 987.4 ohms
R2 = 987.2 ohms
R3 = 99.91 ohms

meter leads shorted together = 0.74 ohm

(Now I entered two or three CR/LFs between the values. But the forum software didn't put them all in. )

[ayeaye]

R2 = 987.2 ohms
R3 = 99.91 ohms

With these the result was the following.

Input power was 8.838 uW
Output power was 7.202 uW

Now these input and output powers, are the input and output powers of the coil. The input power of the coil is the power dissipated in the resistance of the coil as heat, and the power stored in the coil. The output power is also less by the power dissipated in the resistance of the coil.

These are the real powers consumed by the coil and generated by the coil, they have a real physical meaning, these are not arbitrary or fictional values.

Can you measure the static resistance of your coil, so i can calculate the powers actually stored and generated by the induction in the coil?