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I want to reform the electrolytics in an amp I'm bringing back to life.
It runs high power, 220 volts ac only.

Can I use my 110 volt variac in conjunction with a 110V to 220V step-up
transformer to power up the amp? Obviously I'd not go key-down, but I
do want to ultimately get to the full B+ on the tubes.

How would I wire-up the variac / transformer, assuming it's possible?

Thanks in advance for the help, guys.

73,
Jeff
W8KZW