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Dead mosfet's

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LAN_403

ZakWolf

Thu Jan 06 2011, 04:59PM

Registered Member #3114 Joined: Sat Aug 14 2010, 08:33AM
Location:
Posts: 608

I was running my ZVS fly back driver when the positive power lead touched the output to the fly back (the drain connection) i have done it before but only for a second though. This time is was about 3 or 4, know when I give it power the fets get warm and there is a little purple 1mm long spark. Did I ruin the mosfets or the diodes

EDIT: "of" should have been or

James

Thu Jan 13 2011, 04:11AM

Registered Member #3610 Joined: Thu Jan 13 2011, 03:29AM
Location: Seattle, WA
Posts: 506

Test them. Power semiconductors almost always fail shorted, any multimeter will suffice to check them out, but the diode check function on most digital meters is nicer.

Inducktion

Sun Jan 23 2011, 04:50AM

Registered Member #3637 Joined: Fri Jan 21 2011, 11:07PM
Location: Buffalo, NY
Posts: 1068

Yeah...It sounds like you probably just killed the mosfets. Just test it out again and see if it works still.

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