Kapanadze Cousin - DALLY FREE ENERGY

[Hoppy]

Not having much luck still. The heatsink has a fan on it. I changed the the resistors for two diodes. Popped the top off of the mosfet in seconds.
I have no internet or electricity at my house right now so I will not be posting much for awhile
NickZ

We're going to have to nickname you Nick the Smoke 

Seriously though, have you actually isolated the mosfets from each other? The mosfet tabs should either be electrically isolated from their respective leads or from themselves so check this with a meter.

[Ed morbus]

Nickz use separate heatsink
Drains should not be connected
or together with each other

[ingyenenergiagep]

I think:
-the R on gate min. 1k potmeters (maybe bulbs? 230V lamp on 12V=under 0,1A )
-2 mosfets and 2 heatsinks  are better. One mosfet is on own heatsink without isolation(but silicone cream is good), the other mosfet on other heatsink.
-IC gives 50-50% signal for FETs, the frequency is stable, and we can change it exactly. Less heat on fets, less electrical waste.

[Hoppy]

I think:
-the R on gate min. 1k potmeters (maybe bulbs? 230V lamp on 12V=under 0,1A )
-2 mosfets and 2 heatsinks  are better. One mosfet is on own heatsink without isolation(but silicone cream is good), the other mosfet on other heatsink.
-IC gives 50-50% signal for FETs, the frequency is stable, and we can change it exactly. Less heat on fets, less electrical waste.

Nick appears to be using heat transfer pads, so he's OK on the thermal front.

[Grumage]

Also, because you are not measuring with short rectangular nanopulses occurring at low pulse repetition frequency (PRF), you are unable to distinguish between 1.2 cycles and 0.2 cycles with a scope.
So please repeat that measurement with two piezos (one in each gap) and narrow pulses occurring at low PRF.

Dear Verpies.

Try as I might I just can't get that 15 micro S distinction!! I have been pulsing the Piezo with an adjustable PWM that has the facility to go from 0-100% pulse width. I could see the decay in the receive Piezo but using a slow time base ( low PRF) the minimum distance between plot lines is 50 micro S!! Is this something we need to see or can we take it as read?

I have no slim ceramic magnets to hand so will try to find some for the other test you asked me to do.

Cheers Grum.