Sync gap optimization

To: "'Tesla List'" <tesla-at-pupman-dot-com>
Subject: Sync gap optimization
From: Tesla List <tesla-at-stic-dot-net>
Date: Mon, 1 Jun 1998 00:10:50 -0500
Approved: tesla-at-stic-dot-net

----------
From:  FutureT-at-aol-dot-com [SMTP:FutureT-at-aol-dot-com]
Sent:  Saturday, May 30, 1998 11:32 AM
To:  tesla-at-pupman-dot-com
Subject:  Re:  Sync gap optimization

To Gary Lau, all,

Gary, regarding the shorter sparks you're obtaining with the sync
gap, I think the answer may be in the cap size.  If I remember correctly,
you're using .01uF with a 12kV, 60ma NST (?).  I know we discussed
some aspects of your coil previously, but I don't remember if you
checked with a scope to see if the set-up using the static gap is firing 
twice per half cycle?  If it is firing twice per AC half cycle using the
static gap, this would certainly explain why the sync gap is giving 
inferior results.

In any case, your NST can probably handle around a .0175uF capacitor.
Such a cap might give better resonant charging and would give a larger
bang size.  Such a sync-gap TC arrangement might then outperform the
static gap set-up.  

I can't think of any other reasons why the static gap would give better
results than the sync-gap.  Optimal cap size seems to be the key to
optimal sync-gap TC performance in current limited systems.  Optimal
toroid size and coupling are also important of course.  

Just some thoughts,  good luck with your TC work,

John Freau