>Any clues ? (personally I'd have made the circuit
>more fail-safe, but he's very cost-conscious. Perhaps to the
>extent of false economy it seems)

I'd decrease the pulldown on the gates.
I'm also suspicious of tying the gates to the drains through those zeners.
When you turn off the fets, the drain voltage will rise, and likely turn
the diodes on.
At that point, I'm not sure what happens, could be gate breakdown, could be
a nasty period of linear operation.

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Dave's Engineering Page: http://www.dvanhorn.org

I would have a link to http://www.findu.com/cgi-bin/find.cgi?KC6ETE-9 here
in my signature line, but due to the inability of sysadmins at TELOCITY to
differentiate a signature line from the text of an email, I am forbidden to
have it.

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