[Milsurplus] 51J-3

[Peter Gottlieb]

It's been a while..

What is the best way to reform caps?

Full voltage with high source impedance?  half voltage?  ramp up?  over what 
time period?



J. Forster wrote:
> telegrapher at att.net wrote:
> 
> [snip]   I won't apply any power till i've looked underneath and then
> 
> 
>>will do so only with a variac in line.  The main tuning knob is from a
>>BC-348 so now i've got a nice spare for one of mine.  This will be
>>another item i'll need to find for this receiver.
> 
> 
> If you mean to reform the caps by applying power slowly from a Variac, I'm not
> convinced this is the best procedure for tube gear.
> 
> Certainly reforming is essential, IMO, but without full filament on the
> rectifier(s) the actual reforming voltage may be somewhat unpredictable. It may
> also be hard on the rectifier tube(s).  usually leave the set unpowered and
> apply voltage from an external PS.
> 
> FWIW,
> -John
> 
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