"Gym Bob" writes:

Not sure about the Triac but zeners are the fastest and the gate of the
Triac should only act like a diode until the whole thing turns on and backs
it up.

Zeners are usually used in parallel with MOV's for the speed, beating the
MOV, of course.

Right. Triacs/SCRs are probably in the microsecond range. But the zener
should accept the initial surge, and possibly all of it!

--- sam | Sci.Electronics.Repair FAQ Home Page: http://www.repairfaq.org/
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