Blown Rolled "Hull" Capacitor Discussion
Subject: Blown Rolled "Hull" Capacitor Discussion
From: Scott Myers <scotty-at-wesnet-dot-com>
Date: Wed, 28 Feb 1996 07:51:34 -0500
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> Quoting Ed Sonderman (Esondrmn-at-aol-dot-com):
> Re: Capacitor voltage rating
> > I do think we should add an addendum to the capacitor build
> > instructions that discusses voltage ratings. Everytime someone
> > blows one of these he has just lost $80 to $100 and a lot of
> > time. I would like Richard Quick's opinion on this.
> I have no problem with this at all. Obviously the material is
> pertinent or we would not be discussing it. ...........
> Richard Quick
After listening to this discussion, one thing has crossed my mind.
Has everyone that has blown these caps used a vacuum pump to remove
ALL air from between the plates and in the oil? Also, is everyone
using transformer oil? I have heard talk of cleanliness, which is
indeed important. But the two point I bring up are also critical.
For those that have blown the rolled "Hull" capacitors recently, I
would like to take a survey to see if the above 2 details were
I have not built a rolled capacitor, only vertical stacked plate.
I also had problems until I used tranformer oil and used a vacuum
pump to remove all air.