Re: Maxwell 37667 pulse caps

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Sean Taylor" <sstaylor@xxxxxxxxx>

The Maxwell  37667 caps are fine for coiling as long as a few of the 
ratings are kept in mind.  As several of the people have stated, 
voltage reversal is a big concern, as is voltage.  These caps are 
designed for high rep rate, I don't know an exact number though 500 
pps was mentioned earlier.  I have 1 of these caps and have used it 
with a 12 kV, 90mA supply (2 NSTs in parrallel) and a SRSG, and it 
hasn't failed yet.  I have also seen 4 of them fail simultaneously 
when used with a pig system and a ARSG.  It all depends on how the 
ratings are maintained.

FWIW, I heard that the "from medical equipment" applies to a system 
that was designed to break up kidney stones.  The caps were used to 
discharge into a chamber and create an extremely loud sound in order 
to break up kidney stones inside the body.  I have no facts if this 
is true or not, but would suggest hard, high peak current use for these caps.

Sean Taylor
Twain Harte, CA


On 11/22/06, Tesla list <<mailto:tesla@xxxxxxxxxx>tesla@xxxxxxxxxx> wrote:
Original poster: "David Rieben" 
<<mailto:drieben@xxxxxxxxxxxxxxx>drieben@xxxxxxxxxxxxxxx>

Hi Jim, all,

It's my understanding that although the "BIL" rating
does have something to do with an electrical utility
component's high voltage standoff of line transients
well above the typical operational voltage (like light-
ning hits), the letters B-I-L actually stand for -- Basic
Impulse Level. I've been told that the BIL voltage
rating is the test voltage that the component is designed
to withstand in the form of a 50 u/sec pulse. I believe
that fellow list members Bert Hickman and/or Jim Lux
has explained this on this list in the past and I'm sure
that they could further expound upon it much better
than I have.

David Rieben


----- Original Message -----
From: "Tesla list" <<mailto:tesla@xxxxxxxxxx>tesla@xxxxxxxxxx >
To: <<mailto:tesla@xxxxxxxxxx>tesla@xxxxxxxxxx>
Sent: Wednesday, November 22, 2006 4:33 AM
Subject: RE: Maxwell 37667 pulse caps


> Original poster: "Jim Mora" < <mailto:jmora@xxxxxxxxxxx>jmora@xxxxxxxxxxx>
>
> Chip,
>
> Don't feel bad, I have my pair as do many others, I'm sure. They are
usually
>
>
> They generally have a high built in "BIL"
> rating (Built in Lightning standoff) which says a lot about the
insulation.
> Anacronyms go with the territory! I think there is place on Pupman that
> defines them.
>
> Jim Mora