Using a Variac to revive power supplies
toby at pdp11.co.uk
Thu Dec 23 08:11:45 CST 2010
I've recently acquired a Variac (220V 10A) and was wondering what the
collectives views are on using them to revive long dormant power supplies.
Previously I have removed the electrolytics and reformed them with a bench
power supply setup, slowly ramping up the voltage (as per
http://www.vcomp.co.uk/tech_tips/reform_caps/reform_caps.htm). Am I right in
thinking I can use the Variac to effectively reform the capacitors in
I'm currently rebuilding one of my PDP-8/E's which has a linear PSU which I
believe is ok, but will it also work with later DEC switchmode PSUs?
All the best,
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