[Johnson] High Voltage Electrolytic Capacitors correction!

[Jim Brannigan]

I just re-read your post......
They are not electrolytic capacitors, they are polypropylene........

Newark, not Mouser......SKU# 862-2434
.1 MFD @ 1600VDC

Jim


> My Heathkit SB-610 monitor oscilloscope, built in the mid-to-late 1970’s,
> recently stopped working and I determined that a shorted capacitor in the
> CRT HV supply was the culprit. There are two 0.15 micro Ferad tubular
> electrolytics, rated at 1600 WVDC, used in a voltage doubler to supply the
> monitor CRT. The capacitors are in a plastic package of modest size and
> likely cost, at most, a couple of dollars each at the time when I built
the
> kit.
>
> Searching amongst various parts suppliers, including catalogue houses,
> reveals an absence of high voltage tubular electrolytic capacitors. I had
> recognized from Electric Radio Magazine that it was tough to find many of
> the metal electrolytics for various boatanchor transmitters, but didn’t
> think that this problem extended to HV electrolytics of all types.
>
> I finally located a manufacturer of plastic tubular capacitors meeting the
> requirements, whose Canadian rep quoted me a price of $64.00 for a single
> replacement unit.