Larry Molitor wrote:
>
> There is step-start in place and functional. There is glitch protection.
> One more time, the failure DID NOT occur on start-up. It DID NOT occur
> during a big-bang or other disaster. The whole thing was loafing along at
> about 1/3 design limits when the damn diodes just rolled over and died.
That's why I suggested a transient. It doesn't look like a current-related
problem. Did you have a mov in the primary or some kind of transient-absorbing
circuitry across the secondary? Whether or not you need capacitors to swamp the
junction capacities, they do help absorb transients. Of course, a bad diode is
possible.
73,
Vic, K2VCO
Fresno CA
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