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Registered Member #977
Joined: Thu Aug 30 2007, 06:57PM
Location: England
Posts: 74
I just hooked up my ZVS to a 2 Amp variac transformer, I ran it at about 30 volts and around 400 watts for a bit, absolutely huge sparks then it stopped working. It's made from irfp250s, 12v 0.25 watt zeners and uf4007 diodes, which of these will have fried? The mosfets got warm but not too hot, I doubt it's them, but if the diodes have gone will that have left the mosfets unprotected and fried them too? I'm looking to rebuild it and run it off an 8A variac I have, but I want to make sure all the components I have are up for it, so will the irfp250s be ok for that kind of power? And what diodes will I need for it?
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ZVS flyback trouble
