>
> >
> // Not all oil-filled capacitors in days of yore used PCBs. General
> Electric's "Pyranol" caps did. Sprague "Vitamin Q" caps did not. Also,
[Steve Katz] The T-bolt, at least the one I had 1969-1975 or so,
had a Pyranol cap. It not only failed, it leaked all over the operating
bench; but where it was installed it must have run awfully hot, it was under
the chassis with no air ventilation at all. I wore two sets of rubber
gloves and used a lot of paper towels to wipe up the mess...the oil was
nearly clear but very sticky.
> capacitor ratings then tended to be conservative. For example, a
> "Vitamin-Q", 600v-rated, 4uF capacitor fails at c. 3500v. I ran some at
> 1700v for years in a UHF amplifier and they are still good.
[Steve Katz] Since Fair Radio has modern vintage HV oil-filled caps
with mounting brackets for ~$1 per uFd, can't see the point in using old
caps or pushing them hard!
> cheers, Steve. Tnx
>
> - R. L. Measures, 805.386.3734,AG6K, www.vcnet.com/measures.
> end
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