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Author Topic: Simple to build isolation transformer that consumes less power than it gives out  (Read 329189 times)

Offline Jack Noskills

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There will be a test report. I have one that has one trafo setup described. In that current limiter bulb uses 1.5 watts and load bulb around 20 watts. But all the meters show it is not OU, so same effect you have. Last test is to test this in using isolation. There are two trafos back to back because suitable 1:1 was not available, so first stepdown and then step up so there are some losses. This setup also did not show OU, when taking power it was seen at input. Only difference to my setup is now the resistance of the coils, which was 165 ohms in mine. Impedance was not measured, I will ask and permission to post the test report.
 
I refer once more to two trafo test I made with iron trafos in the beginning. First just two trafos in series, I got bulb on primary of first trafo then at output of second trafo. I put load I got light on first trafo and little less light on second trafo. This is normal. Then I connected the second trafo differently, I got no light on first trafo and more light on second trafo compared to test one. So I got two different behaviour, first test is obviously not OU. What is happening in this second test ? This is why I started this thread in the first place, to get explanation to this effect from others that know things better.

Offline Jack Noskills

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Here is test report as promised. Now that inductance figures are known it is clear why input 'sees' load. I think inductive reactance should be well over 10 kohms, higher is better. Ideally < 1 mA should flow through one coil when no load. I still don't understand why bulbs are unequal. If coil is leaking' towards source, then the first bulb sees sum of two currents but going in opposite direction (low voltage difference) lamp does not get power. Or something like that.

Does anyone have a small iron trafo that is used to light small bulbs (not leds) and measure L of that ? Maybe we could compare.

Offline Jack Noskills

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Below you find my views how to build high frequency version. Read it and comment about it. Send comments using PM and I can then update document. Let me know if you want/dont want your name to show in case changes are done.

Offline leo48

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@Noskil

The file report.zip not open
Leo48



Offline Jack Noskills

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Explanation from EE for the sawtooth waveform of voltage at output when load connected:
 
There is harmonic content till 1KHz. The strongest harmonic is the third with amplitude about 1/10 of fundamental (50Hz).
 

Offline Jack Noskills

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@Noskil

The file report.zip not open
Leo48

I tried to post older word document two times, both failed. I don't have any other tool than winzip so cannot help.

Offline TheCell

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Same arrgmnt with 15W bulbs both, measurements and scope shots.
No reason to get excited. (No OU)


Zip File contains 2 Parts,








Offline photonix

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please repost the report.zip, the zip is corrupted(unexpected end of file)

Offline TheCell

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2nd Part
rename .txt to .z01
and open both with winrar or I guess winzip works too

Offline FatBird

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TheCell,
 
I downloaded your file & this is what it looks like.
 
Can you post it in a popular format please.
 
Thanks.
 

Offline TheCell

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THe zip archive is splitted in 2 files because of the maxbytes limitation here in this forum.
The second part with the suffix txt must be renamed from
my_Replication01+.txt to [size=78%]my_Replication01+.z01[/size]
[size=78%]and you must download the first part in a previous post too : [/size]my_Replication01+.zip
Put both files in one dierctory doubleclick on the .zip file an here you go.

Offline T-1000

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T-1000      I watched all those links in russian a few times    I understand no russian.   I see excited people and equipment and circuits.   I have a 1000Watt variac/ one constant voltage trafco 15 amps, one LARGE older neon sign DUAL trafco.   Can anyone make a finer detail schematic of the circuit for us?

Here is simplified circuit, hopefully it will be more easy to understand it now.

P.S> Ampmeter1 and Ampmeter2 will show different values in real life situation, you should seek for this condition first.

Offline Jack Noskills

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I got PM'd that report.zip is ok. Here is docx file renamed as doc so it will upload.

Offline Jack Noskills

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I will start high frequency experiments. I got PC, goldwave audio editor, audio amplifier that can spit out 260 watts of power, nanoperm toroids, and most importantly, lots of beer cause its friday. I might have a few ones if I am successfull. If not then down the drain it goes. So stakes are very high.

I try exact replication first, no fancy winds but just plain coils. With this method I don't think there needs to be power circulating, just power pressure.
Already played a bit, about 5 meters (50 turns) of wire on nanoperm at 15 kHz significantly lowers the audio volume, speaker is in series with the coil. If I put 560 meters of wire interleaved bifilar (several thousand turns), audio volume is much louder. This is fun stuff, and safe.
 
I will try this next:
First one coil, enough turns that nothing is heard when volume is at maximum. Then second coil, more turns so it steps up from 5 volts to 220 volts. I will try different waveforms. Maybe I get amps from audio amplifier and then volts from the second coil that runs the load. Load would then get amps and volts. Lets see what happens.

Offline Hope

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Here is simplified circuit, hopefully it will be more easy to understand it now.

P.S> Ampmeter1 and Ampmeter2 will show different values in real life situation, you should seek for this condition first.


YES! YES! YES!!  This helps a lot, thank you from the whole bunch of us T.