Re: Capabilities of Small Thin Wire Secondaries (fwd)

---------- Forwarded message ----------
Date: Wed, 29 Jul 1998 10:50:14 EDT
From: FutureT-at-aol-dot-com
To: tesla-at-pupman-dot-com
Subject: Re: Capabilities of Small Thin Wire Secondaries (fwd)

In a message dated 98-07-29 01:22:59 EDT, you write:

<< > John and all,
> Very interesting tests and results.  The last statements of your Tests 3
> and 4 are interesting.  Do you, or anyone else, have any idea why there
> seems to be a correlation between gap heating and secondary racing sparks
> even though the gap quenching appears to stay at the 1st notch?  What
> parameter is shifting which causes the racing sparks??  
> --Steve

Steve, all,

I did find it very strange.

I suppose it's possible that the scope isn't showing me every gap firing
due to possible triggering problems, or the problem may be related to
ionization effects.  I'm not sure if the gap heating is really related to the
racing sparks in this case (depends on whether the quenching is really
first notch i suppose, unless some other gap behaviour change occurs,
that somehow promotes the racing sparks, in spite of continuing 1st
notch quenching). 

John Freau

> > ---------- Forwarded message ----------
> > Date: Mon, 27 Jul 1998 17:57:23 EDT
> > From: FutureT-at-aol-dot-com
> > To: tesla-at-pupman-dot-com
> > Subject: Capabilities of Small Thin Wire Secondaries
 >> [snip]
 >> Test 3:  Back to .007uF using the new Terry F.- type gap, (used
> > 14 gaps).  This gap quenched much much better than the previous
 >> 4 section gap, and gave 1st notch quenching at all times even with
>> tightest coupling at k = .2 (sec lowered all the way).  Sparks are
 >> still 21" long, but now multiple streamers are formed.  Streamers
 >> occasionally strike the primary.  A few racing sparks appeared
 >> after awhile, but a household fan blowing on the gaps helps slightly.
 >> Eventually the gaps heat and racing sparks appear, although the
 >> quench on the scope could be seen to remain at 1st notch.
 >> Test 4:  Installed 4" by 17" toroid on top of small 1.5" by 4.5" toroid.
 >> Now only one streamer was formed, but a "corona column" formed
> > between the primary and the toroid at one point.  I had to raise the
 >> large toroid using a metal spacer to prevent this.  23" sparks were
 >> obtained.  Racing sparks form on sec after the gaps heat, but scope
 >> still showed 1st notch quenching.
> > John Freau
 >  >>