[Hallicrafters] capacitor question for cap whizbangs

[jeremy-ca]

I suspect that old cap is not an eletrolytic. In that case it is just a lot 
of foil and wax paper. Be sure of the circuit requirements before replacing 
with a polarized electrolytic.

Carl
KM1H


----- Original Message ----- 
From: <Nash4447 at cs.com>
To: <hallicrafters at mailman.qth.net>
Sent: Saturday, September 08, 2007 11:55 PM
Subject: [Hallicrafters] capacitor question for cap whizbangs


>
> I have a piece of electronic gear built about 1980 that uses a pair of
> 6.8MF  100V block type capacitors. The caps are almost the size of a pack 
> of
> cigs.
>
> I recently purchased a pair of replacements marked with the same capacity 
> and
> voltage ratings yet the things are just slightly bigger than a pencil
> erasure.
>
> What happened over the intervening 25 years that allows today's capacitor
> makers to achieve the same capacitances & voltage ratings in such tiny 
> packages?
> Its really hard for me to believe that one will replace the other 
> considering
> the dramatic size differences.
>
> Comments?
>
> Glenn
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