[Boatanchors] How about a different topic relating to electrolytic caps

[WQ9E at btsnetworks.net]

I have a Radio and Television News magazine article that discusses the early homebrew "slop jar" rectifiers used by early amateurs lucky enough to have AC service to their homes.  It covers the construction of these and also how to use a few more of the same devices as a filter capacitor.  It was probably a different electrolyte but an interesting article all the same.  One of the benefits noted for this rectifier was an accidental short across B+ would just result in some extra bubbling of the electrolyte but it would work fine again once the short was removed.

Rodger WQ9E

-------- Original Message --------
> From: "Gerry Steffens" <gsteffens at pitel.net>
> Sent: Sunday, January 01, 2012 10:15 AM
> To: boatanchors at mailman.qth.net
> Subject: [Boatanchors] How about a different topic relating to electrolytic caps
> 
> I think I tried this on the old reflectors before QTH.net.  I did get an
> answer but computers being what they are, I lost it to a crash.  So, here
> goes.
> 
> I have many old E.H. Scott radios, many are the early ones which have true
> electrolytic caps (the kind with the metal fan electrode, supported by a
> rubber seal in the bottom, inside a can filled with liquid electrolyte).  In
> a few of these radios, these are still good and functioning.  By the way,
> when these dry out they don't short, they just loose capacitance.
> 
> The question:  What is that liquid electrolyte?
> 
> At the Michigan Antique Radio Club Extravaganza many years ago a fellow
> demonstrated refilling these units using a syringe through the vent holes.
> This saved a lot of time and work, plus the radios worked perfectly.
> 
> While this doesn't compare to the earlier discussion, anybody know what the
> electrolyte was?
> 
> Just curious & thanks,
> 
> Gerry
> 
> Radio Historian, collecting
> EH Scott, McMurdo Silver, 
> Hallicrafters, Zenith Transoceanic
> & any other interesting radios plus
> Classic Oldsmobiles
> 
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