Kapanadze Cousin - DALLY FREE ENERGY

[T-1000]

It would appear that the turns ratio of 1:5 needs to be increased, so its quite possible that the transformer in the ALLEGGA circuit was custom wound.

I asked Oleg on skype about this bit few days ago and he just said the transformer came from impulse power supply. He connected it in reverse for step up voltage. For details about model/etc I do not know which is used, probably it may be from one of burnt down PS as there is one for loop-back.

[itsu]

Itsu,

Thinking about this further, as this is reasonably low powered forward converter, you should be able to drive the primary unipolar, so not needing a centre tap winding. So any main PC SM step-down transformer working reversed should work to give the required 300V DC output @ around 0.2A, when rectified and smoothed. I'll have to try this out myself.

Hoppy,  that would give fireworks i guess 



Ok, i fired up the PLL (still on the breadboard) and the Kacher driver on a separate PCB using a stand alone kacher (not the Ruslan kacher).
As my 24 to 130V dc2dc converster is not ready yet, i use 24V on the kacher primary coil

I had to set the Kacher drive pulse to the maximum (500ns) of the schematic otherwise the kachers output was very low.
Even now the peak to peak value is only 37V (probe hanging 5cm above), so no streamers are visible.

See the sceenshot,  red trace is the Kacher MOSFET gate signal, yellow the hanging probe above the kacher.
Notice the long ringdown after the MOSFET closes which i did not expected.

Video here:   https://www.youtube.com/watch?v=icDnx7t3ukQ&feature=youtu.be


Regards Itsu

[Hoppy]

Hoppy,  that would give fireworks i guess 


Regards Itsu

Most likely! Even the correct 130-135V may be interesting.

Regards
Hoppy

[Hoppy]

I asked Oleg on skype about this bit few days ago and he just said the transformer came from impulse power supply. He connected it in reverse for step up voltage. For details about model/etc I do not know which is used, probably it may be from one of burnt down PS as there is one for loop-back.

Thanks for this info. Like Itsu, I have a good number of different transformers which i will test. At least we know he did not custom wind it.

[Dog-One]

Have you guys built this inverter circuit and tested it?

I tried it with several input voltages using a cwsbytemark.com MegaFlux toroid core and was able to adjust secondary turns to pretty much get any voltage I want.  My thought was to run at about 1/3 of the max voltage the IRFP460.  Make R32 adjustable and find C27 to be near a midrange point where the frequency is most efficient for the core you are using.  Try not to run it too fast as the IR2153 can only handle so much drive current on the MOSFETs.  You won't burn up the chip with R30 & R31 in-place, but the waveform will begin to slew pretty bad; consequently the MOSFETs will begin to run hot.  Check the heat on R27.  When things are right, it should run nice-n-cool.