[Boatanchors] leaky cap data point
Bill Cromwell
wrcromwell at gmail.com
Tue Sep 22 21:18:53 EDT 2015
Hi
I had a little time to go into an old AM-FM-SW receiver from the 1940s
to examine the caps with my "new" Heathkit C-2. I haven't played with
the C-2 very much and I wondered if *all* of those old caps could be
*that* bad. So I got out some caps I have recently bought(in this
century) and the C-2 likes every one of them. I'll inventory what is
needed in the radio (all of the paper and electrolytic caps) but I'm
guessing I will be replacing around a dozen or so caps. The
electrolytics in the pwr supply filter are dead short! I probably have
all I need right here. The power supply caps are only 40-20-20 at 200
volts and I think I have some good ones near that value harvested from
curly CFL bulbs. I hate those high power RFI generators but they do have
a few nice parts inside:) I don' wait for them to fail before the
harvest <evil grin>.
After running the leakage tests on the new caps I was really surprised
at the fat, loud sparks I drew when I discharged them! I suppose they
are in good condition. I have more confidence in the C-2 now an old
radio will soon be coming back to life.
73,
Bill KU8H
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