Re: Blown Cap

To: tesla-at-pupman-dot-com
Subject: Re: Blown Cap
From: Jim Fosse <jim.fosse-at-bdt-dot-com>
Date: Wed, 29 May 1996 05:55:14 GMT

On Tue, 28 May 1996 22:30:00 -0600, Tesla List
<tesla-at-poodle.pupman-dot-com>, you wrote:

>> Subject: Re: Blown Cap
>>From hullr-at-whitlock-dot-comTue May 28 22:10:12 1996
>Date: Tue, 28 May 1996 09:51:45 -0700

>
>Also, the 60mil poly caps should never see more than about 
>9KVAC per cap.
I understood that, and didn't move from 7.5kV to 15kV until I had
build a 3 layer 0.030" cap. Then I tried 15kV on the single 0.060" cap
- I wouldn't have been so down hearted if it had gone out with a bang
instead of a whimper;(
>Once you move on to 
>a pole pig or a non-shunted transformer and plan on 4 KW or more power 
>output, the homegrown rolled caps are going to be stressed to beyond 
>their limits.
I'll have to check my lab notes (not bound yet so I cant call it a
book) to see when I blew the 3 layer cap.
>
>The rolled amateur caps are for Neon Transformer systems and rather low 
>power use (under 3KW).  Most of the problems that I have seen occur are 
>when rotary gaps are used and the rep rate is taken up to levels beyond 
>500 bps.
Oops,
	I took out the second 3 layer 0.030" dialectric cap with a
15kV 60mA neon and a rotary gap at about 2500 bps (potentially).

	jim