Sprague 2X.1-1000 filter capacitors and 854-B power control assembly

Tom Hunter ccth6600 at gmail.com
Mon May 3 07:34:02 CDT 2021

Thanks Matt.

The actual equivalent filtering can easily be achieved by two small Y-class
AC caps, but the 8 male spade connectors on the original Sprague cap are
also used as a wiring hub. My problem is more of a cosmetic and
reversibility nature. I am trying to find something which doesn't require
drilling new holes into the power control assembly and doesn't look
horrible when you open the rear door of the Lab-8/e.

Chuck's suggestion of gutting the old Sprague capacitor would be ideal
except for the PCB toxicity issue (maybe I am just too paranoid with PCBs).
The "bathtub" can is soldered and partially crimped together. Heating the
solder joint would get the mineral oil with the PCB in it very hot so I
would expect toxic fumes once the can opens. The next problem would be what
to do with the oil after I successfully opened it and how to clean
everything so that no toxic residue is left.

Best regards
Tom Hunter

On Mon, May 3, 2021 at 8:13 PM Matt Burke via cctalk <cctalk at classiccmp.org>

> On 03/05/2021 11:45, Tom Hunter via cctalk wrote:
> > There is no point in trying to hunt for “new” Sprague 2X.1-1000 because
> > they would all be ancient and have the same leakage problem.
> >
> > Any thoughts, ideas or suggestions?
> >
> You could try replacing it with a modern line filter assembly. Not sure
> where you are located but here's a UK example:
> https://uk.rs-online.com/web/c/passive-components/passive-filters/power-line-filters/?sra=p
> That would require some modifications to the case/wiring though.
> Regards,
> Matt

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