Kapanadze Cousin - DALLY FREE ENERGY

[itsu]

    Itsu:
    Are both of your mosfet firing at the same time? No?  I guess then that both of your scope probes are on the SAME mosfet then, right?  So, do you notice any advantage at the output, or anywhere else?
   As Stalker has discontinued using that delay circuit, I wonder if it's really needed, or not.

Right, the scopeshots were from 1 MOSFET, yellow directly from a TL494 output,  blue from the same signal, but after it passed through the TC4093 delay chip.

I did not had the 24V on the drains, so no idea about the output, i just want to get the same 49.8% duty cycle Soliman showed us.



itsu

[NickZ]

    I see, ok then. I'd still like to see how soliman gets the 50 to 100v increase. As I don't see that at all.
   That voltage increase and also current increase is more important to me, than the delay or the 50% duty cycle. As most of the time the duty cycle needs to be dropped to about 41%, or so, instead of raising it to 50%. Unless the delay is the cause of being able to see a 100v increase at the output. So, I'd like to be able see that increase in output happening on a scope.
   Soliman has not shown nor mentioned anything about his load. Maybe without a load he sees that increase. But, with a 200 - 500w load? What happens then?

[NickZ]

    Void:
    Thanks for the info about the mosfets. However, I have a bunch of new 240p fets that I haven't even used yet. And from what I saw on Jeg's video he was changing from the 460p down to the 240p, as they have lower resistance. But, not so low as the IRF3205 that Stalker uses. In any case, I'll stick with the 240p for now, as these were not easy to get here. I'm not too worried about the overheating issue now with the new snubber in place. 
   Your hand wound inductors look like they wound have much higher inductance than just 1millihenry, with so many turns on them.

[Void]

Hi Nick. That's up to you.
Those inductors wound on the toroids are 1mH (1 milliHenry), and they are
actually commercially made. I didn't have any suitable toroids on hand, so
I had just ordered a couple of commercially wound 1 mH toroid inductors.

[NickZ]

   Void:
  OK, it's good that you have the right value inductors. Mine seam to be working ok, also. Even though I don't know what value they are, the snubber is keeping the FETs cooler than how they were doing before. But my peaks can still go over 200v with higher loads.  The big yoke core that I am using with thick windings on it is why I have higher peaks as compared to Itsu's set up running at around 100v drain signals. I think.