[sdiy] multi legged electro caps?

Roy J. Tellason rtellason at verizon.net
Wed May 2 02:41:14 CEST 2007


On Tuesday 01 May 2007 16:51, Bob Weigel wrote:
> A lot of times I just build on underneath and leave the old capacitor in
> for show only.

I would *not* recommend doing this. It used to be a pretty common 
practice "back in the old days" to bridge a cap in-circuit with another one 
if you suspected that the one was bad.  Which was fine until I got bit by a 
situation where whatever the heck was wrong with the one in-circuit kept on 
screwing things up with a new cap connected across it and the equipment (an 
Ampeg SVT as I recall) wouldn't work right until I took the old one out.

Leaving the old one in there is just asking for trouble.

I know that the lugs on these things are commonly used as tie points for all 
sorts of stuff and that it can be a real PITA to remove all those wires and 
find places to hook stuff up to,  particularly if their using those lugs was 
a way to save on some termninal strips in there,  but I wouldn't leave the 
original part in.

> I have in stock...a mallory that would almost work.  300 at 175volts... 200
> at 150V X 2!  SO that would just up your filtering 50uf on both of those. 
> No problem.  Let me know.  if you want to get an NOS device like that. 

Going a bit higher with either the voltage or the capacitance is normally not 
a problem at all,  as long as there's room for the part you're putting 
in.  :-)

-- 
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space,  a critter that can
be killed but can't be tamed.  --Robert A. Heinlein, "The Puppet Masters"
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Information is more dangerous than cannon to a society ruled by lies. --James 
M Dakin




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