Simple to build isolation transformer that consumes less power than it gives out

[magneto_DC]

Parameters you asked:
iron trafo: very thin wire, 0.0x mm thick, resistance was 165 ohms. Coil was small, atmost 10 mm wide. If you break trafo made by chinese company named Jutai then you will get the same coil I used. Trafo was rated to 20 watts and it was used to light up 80 small bulbs, not leds.

Hi Jack Noskills,

as far as I understand, you had great success with the two identical 1:1 iron trafos. You already gave all necessary data: rated Voltage, Power, R (Winding) = 165 Ohms. (Impedanz some hundred Ohms at 50Hz maybe).

I would like to know, what kind of  1:1 trafo is it?

Is it 230V primary / 230V secondary, so the windings ratio would be (nearly): N1 / N2 = ~1300 / ~1400  ??
Or
Is it N1 / N2 = ~1300 / ~1300 = 1 : 1, so the output voltage is always something lower than the input voltage ??

Thanks for your clearification in advance.

Regards
magneto_DC

[Jack Noskills]

I smashed two identical christmas light trafos rated 20 watts, 220V/50Hz. I took primaries from them and made one 1:1 trafo out of those on the same laminated iron core, so coils were identical. Same junk that I used when I was playing with Thane's BiTT concept, in a bit modded version though. I used alternate return path instead of air gap, it was enough to change my mindset correctly towards FE.

Two such iron trafos as connected in the picture in page 1 proved to me output does not affect input and that there is more power at output than is used at input. This helped as I didn't have working meter available. When I saw it first time I was amazed, did not expect it to happen. I expected to get BiTT effect in single core. The first trafo is not necessary unless you want to protect source if power is pushed back, or if you need to use higher voltage to get more power. Can it push back, I don't know. Furthermore, adding cap in the second trafo improved ratio, less power was consumed and more power at output. That was a lucky shot. This means input side can be tuned so that it consumes only milliwatts, what is consumed by DC resistance of the coils. It is much easier to achive this without tuning cap, just put enough wire in the coils, or use high enough frequency to reach high impedance state.

[e-]

Hello, I read the forum a long time, now would like to contribute to research.

I was looking at the schematic made ​​by Jack Noskills and I realize that is the same as an autotransformer. So, if there really is OU, this would not be due to the configuration of the coils but the high impedance of the circuit.

Below I show the points of equivalence. What do you think?

I'm thinking about disassemble two microwave transformers and use the two high voltage coils to make a high impedance isolation transformer.

[e2matrix]

Hello, I read the forum a long time, now would like to contribute to research.

I was looking at the schematic made ​​by Jack Noskills and I realize that is the same as an autotransformer. So, if there really is OU, this would not be due to the configuration of the coils but the high impedance of the circuit.

Below I show the points of equivalence. What do you think?

I'm thinking about disassemble two microwave transformers and use the two high voltage coils to make a high impedance isolation transformer.

Thanks for joining in.  I think the difference - at least in Jack's initial circuit is that he has 2 separate cores whereas the autotransformer you show has just one core.   Your idea of using 2 MOT's sounds interesting.  I'm visualizing an easy way of just joining the cores mechanically (and electrically) but using only the only the HV windings on each thus giving a 1:1 if they are the same type.  Not sure if that would work but it came to mind.  I've got a lot of MOT's laying around so I might give that a try.

[Jack Noskills]

e-, your setup is exactly the same thing I have. If there would be cap in the coil that has no load then it begins to look like Don Smith circuit without primary and without diodes, interesting similarity. Cap is not needed if it is possible to vary frequency.

Those two coils need to interact so they must be on the same core. The first version I used had two trafos, later on I realised only one is needed to create the effect.