> Let's not lose sight of the fact that the motor circuits that are
> generating the spikes should be examined for ways to reduce or
eliminate
> same. Moreover, tinkering with the power supply crowbar circuits is
> really treating the symptom rather than the problem.
I have to disagree. Both of my rack mount 50 amp supplies have done
this, on remote sites or in the garage with NO problem on the input
side. If you try to draw more than 10-12 amps when you turn them on, it
immediately crowbars. The only way to get it to run is to turn it off,
drain the caps, remove the load and turn it back on. Then you can
attach the load *spark* and it works fine. That is the design flaw that
I feel needs to be corrected.
73 N7HQR
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