Re: gmheicslr --- uh oh...once again!

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Jim Mitchell" <electrontube-at-sbcglobal-dot-net> 

Actually come to think of it,  I was using 5uF at 700v,  the higher
capacitance is probably what did in the sidacs (like you said) due to the
higher current.

Regards - Jim Mitchell
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Tuesday, March 30, 2004 1:18 PM
Subject: Re: gmheicslr --- uh oh...once again!


 > Original poster: "Steven Ward" <srward16-at-hotmail-dot-com>
 >
 >
 >
 >
 > >From: "Tesla list" <tesla-at-pupman-dot-com>
 > >To: tesla-at-pupman-dot-com
 > >Subject: Re: gmheicslr --- uh oh...once again!
 > >Date: Mon, 29 Mar 2004 22:23:00 -0700
 > >
 > >Original poster: "Jim Mitchell" <electrontube-at-sbcglobal-dot-net>
 > >
 > >Yes, I also got good results from the same system.  I was thinking of
using
 > >two HEI coils, mounted in a wood case with two frankenstein looking like
 > >terminals on top.  That would make quite a nice desk display with a 10"
arc
 > >flying between the points.  It seems when I upped the breakdown voltage,
 > >the spark didn't get longer,  but brighter (more current).  I couldn't
get
 > >more then 5" out of a single coil with a 1uf 1200v cap bank.
 > >
 > >Steve,  did you get those bigger sidacs I mentioned?  I was trying some
of
 > >the smaller ones, and after about 60 shots,  they failed (short circuit).
 > >
 > >Regards - Jim Mitchell
 >
 >
 > Hi Jim,
 >
 > Yeah i did find my larger sidacs, but the smaller ones never failed and i
 > know i used them to at least a thousand pulses now (i ran it at like 10
 > pulses a second for awhile and then not to mention 1pps for several
amusing
 > minutes).  Maybe your cap was larger than 1uf?  or maybe your coils just
 > had less inductance (were they high performance coils?).
 >
 > I guess this is something to beware of, though i havent had a failure yet.
 >
 > Steve
 >
 >
 >