Quench, Coherence etc.

To: "'Tesla List'" <tesla-at-pupman-dot-com>
Subject: Quench, Coherence etc.
From: Tesla List <tesla-at-stic-dot-net>
Date: Mon, 10 Aug 1998 23:15:11 -0500
Approved: tesla-at-stic-dot-net


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From:  Malcolm Watts [SMTP:MALCOLM-at-directorate.wnp.ac.nz]
Sent:  Monday, August 10, 1998 8:28 PM
To:  Tesla List
Subject:  Re: Quench, Coherence etc.

Hi Greg,

> From:  lod-at-pacbell-dot-net [SMTP:lod-at-pacbell-dot-net]
> Sent:  Monday, August 10, 1998 2:31 PM
> To:  Tesla List
> Subject:  Re: Quench, Coherence etc.
> 
> Malcolm Watts wrote:
> 
> 
> > Results: - 2 gaps : no effective quench except with attached streamer.
> >            Mostly 3, 4th notch quench. 11" hot blue spark to ground
> >            rod 20% of the time.
> >          - 4 gaps : quench mostly 2nd notch w. no breakout, always
> >            with breakout. Spark about the same as 2 gaps.
> >          - 6 gaps : quench always 2nd notch. Spark increased to 11.5"
> >            20% of the time.
> >          - 8 gaps : quench always 1st notch. Spark 10.5" for 20% of
> >            shots - yep, it decreased.
> 
> That last part is _very_ interesting... did anything else change?
> When you changed #gaps, do you think that the effective firing voltage
> might have decreased?

No. The gap was set accurately to fire at the same voltage for each 
test. The adjustability is proving to be extremely useful. Of course 
the beating disappeared with the attachment. Those beat patterns were 
for corona.

> Even with 8 rotating gaps in series, Electrum usually quenches 
> on the 2nd notch, and 1st for gnd strikes.  Could the arc dynamics 
> possibly prefer a beating secondary?

I think so and there appears to be a good reason. I posted another 
note on this.  This note was hacked off at the end by the server here 
BTW. An addendum has been posted. Primary Q plays an important part 
in this.

Cheers,
Malcolm