8 Oct
2007
8 Oct
'07
8:45 p.m.
Several of these seem to be concerned
with capacitors from antique radios and the like, with voltages up around
400V, but the information is still worth a look:
It should be noted that the older caps, especially from the 1930s, are
in a whole different league as far as reforming is concerned. There,
it is a must for any electrolytic cap of unknown quality.
And they still blow up, sometimes.
Well, the PDP-12 I've been working on was
surprisingly finicky and
unstable until I'd fully reformed the power-supply caps - turns out on the
first go I hadn't reformed them to their full capacity, and the -12 _knew_
it, and it didn't like it. :)
This makes little sense. While the PDP-12 was being powered up and
"finicky", the caps would have been applied to a reforming voltage
anyway - in this case plain old operating voltage.
And if the caps took that long to heal - DON'T TRUST THEM. They are on
their way out...
--
WIll