Stanley Meyer replication with low input power

[insane4evr]

Hi Jamie,

Try this. Just to scope the waveforms.

Edit: You also don't need the black jumper shown, just connect the left scope probe ground to the bottom end of the secondary winding.

[Jamie]

Hi Jamie,

It is probably because of the number of turns and the powdered iron core that came from a TV flyback which has design frequency of 15.734 kHz and my rectangular wave test frequencies of ~10 kHz to ~25 kHz. It is not visible in the video but there are oscillatory 'ringings' when the mosfet turns off.

Powdered iron or ferrite can operate at higher frequencies than audio. Because of the U-shaped core, there are two air gaps in the magnetic circuit which allows the core to carry higher magnetic flux density before saturating. Sorry if it is a mouthful.

Note in the video, there is a 5A full scale ammeter which shows over 5A when I adjust the frequency and it tells me that the test should be for a short duration only as the coil overheats quickly.

Ok, I think I'm starting to get this. The air gaps allow for higher flux density before saturation, In fact the core in your video never actually saturates. The primary voltage is a square wave, but the primary current is a linear slope up as the core builds flux density. A linear increase in flux density induces a back EMF in the secondary coil that looks like a square wave! Is that right?

I set up everything like you suggested. It was basicaly what I had. I got the same readings. I think poor transformer design is a factor hear  . I think I'm gonna find a flyback (this site has great info on transformers by the way http://www.butlerwinding.com/elelectronic-transformer/pulse_transformer/) as I continue to work on the other one. Thanks again for the help

[forest]

look and replicate Meyer waveform

[kewlhead]

look and replicate Meyer waveform

where is Meyer Waveform?

[forest]

here