Re: Coil Woes

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

Original poster: "Gerry Reynolds" <gerryreynolds-at-earthlink-dot-net> 

Hi John,

That could very well be.  Unless I'm misinterperating the post, Gary's
4.0*Cres was the results of an experiment with a dummy load.  I'm just
trying to get closure on results in a running SRSG system and if the 4.0
Cres continued to hold up.  I'm most interested in the bang voltage of the
15/60 system with 4.0 Cres.

Gerry R


 > Original poster: FutureT-at-aol-dot-com
 >
 > In a message dated 10/12/04 11:59:27 AM Eastern Daylight Time,
 > tesla-at-pupman-dot-com writes:
 >
 > >Hi Gary,
 > >
 > >I remember your post.  Since Cres for your 15/60 NST is 10.6 nf (call it
 > >0.01uf), your experiment would correspond to ~ 1 to 5 * Cres.  Im
wondering
 > >if the dummy load is affecting the results.  My computer simulations show
at
 > >values above 3*Cres, the inductive kick can not get things fully charged.
 > >My actual measurements were between 1.6 and 2.5 * Cres where I scoped the
 > >primary durning actual SRSG operation.  At 2.5 * Cres, I was drawing 1080
 > >watts from the power cord and charging to 24KV at the time of bang (900
 > >watts thru the gap).  I haven't gone larger than 2.5 * Cres cause I ran
out
 > >of cap.  So far the measured results agree with the simulation so Im
 > >wondering if 4 * Cres would hold up during real operation.
 > >
 > >Gerry R.
 >
 >
 > Gerry,
 >
 > It think possibly the secret is that Gary's NST is robust
 > and may deliver more current than expected.  This may be
 > partly due to the use of 140volts input voltage.   It seems
 > that all NST's are not the same regarding their current
 > capability.
 >
 > Cheers,
 > John
 >
 >