On Tue, 13 Mar 2001 04:17:54 -0800 "Michael Tope" <W4EF@dellroy.com>
writes:
>
>I have a vacuum cap that was pulled from an old homebrew amp that
>I picked up in Florida a few years ago. The part number markings on the
>cap are as follows:
>
> Jennings Type "UCSX"
> C746749 C1825
> 20 to 675 MMFD
>
>Scratched into the copper outer cylinder is the following:
>
> UCSX-740
>
>The cap is about 8" long (from shaft coupler to back end) and about
>3 1/2" in diameter. Is there any way to tell what the voltage rating
>is
>for this part short of doing a hi-pot test?
>
>Thanks,
>
>Mike, W4EF.............
>
Hi Mike,
Those parts run anywhere from 7.5KV to 15KV (depending on the precision
of manufacture) and should be stamped on the end housing in ink -- look
at it carefully in bright light and maybe you can find the remnants of
the marking.
Though, as Rich noted, with a part of that age (40 years?) a hi-pot
check is the only way to really be sure of its current condition.
73,
Marv WC6W
*
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