On Aug 17, 11:21 pm, Highland Ham
wrote:

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Don't understand the above.
When using a variac starting at zero and gradually increasing the
voltage there can't be any appreciable inrush current.

I happen to have a 8 Amperes variac and would always use it to 'fire-up'
a previously retired oldtimer (boat anchor)

I have a rather large junk box with high capacitance value elcos and
recently exposed them all to a 'zero to max working voltage' from an
adjustable HV PSU. I do that once every 3 years.

Frank GM0CSZ / KN6WH

Well, mine took out a few SMPS power supplies, and its a pain in the
arse to set up, connect meters, gingerly spend time slowly
incrementing the voltage - life is too short to stuff around......

Hey, you got time to do Rocket Science, thats fine. Each to his own.

Andrew VK3BFA.