[Boatanchors] Lets try a different capacitor question.

[Al Klase]

Gerry,

"An* **aqueous solution of boric acid and ammonium or sodium borate."  
See:  http://www.faradnet.com/deeley/chapt_03.htm

I know nothing, but just Googled "wet electrolytic capacitor."

Good luck,
Al
*
Gerry Steffens wrote:
> I asked this one a couple of years ago and didn't get any response.
>
> I have a number of old radios that have the wet electrolytic filter caps
> that don't short out but do tend to dry out.
>
> Most of these are old E.H. Scott radios and I want both the originality and
> the use.  I have redone a couple, re-stuffing the old paper caps as
> necessary with good success. I have also gathered enough of the electrolyte
> to re-fill the three caps on one radio.  It works perfectly, and has
> continued to do so since I completed it in 1972, complete with the little
> bubbling from the three vent holes on the top of each unit (this is a daily
> user).
>
> The question is: What is the electrolyte?  I would like to make some, buy
> some or whatever if possible.
>
> Several collectors I know have gathered enough electrolyte to do one radio.
> The captured electrolyte can be injected into the caps with a hypodermic
> needle.  I have one radio redone and one original 1937 Scott Allwave 23
> which has all three original caps with adequate electrolyte to function,
> untouched since manufacture (really unusual).
>
> For those that are not acquainted, the caps are merely a hollow cylinder
> with a fanned out center electrode that is usually fan shaped like those
> fold-up Japanese decorative fans, supported in a rubber seal at the bottom.
> There is nothing to short out but as the electrolyte dries out, the caps
> simply lose capacitance and hum develops.
>
> Anyway, several acquaintances are looking for the answer and I have bragged
> you folks up something fierce.  Any thoughts that don't involve our sanity?
>
> Cheers,
>
> Gerry
>
>
>
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-- 
Al Klase - N3FRQ
Flemington, NJ
http://www.skywaves.ar88.net/