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Re: Malcolm's results available
---------- Forwarded message ----------
Date: Fri, 10 Oct 1997 10:36:34 +1200
From: Malcolm Watts <MALCOLM-at-directorate.wnp.ac.nz>
To: tesla-at-pupman-dot-com
Subject: Re: Malcolm's results available
All,
My heartfelt thanks to Richard Hull for doing an excellent job
of compiling the scope and setup photos I took into a small set of
documents. He dealt with the rather scrawly writing on the backs of
the photos most sympathetically.
Two of the photos show just how quickly the resonator rings die
under the best loading conditions I could obtain. Of real interest is
the fact that several cycles of high amplitude ring were necessary
for this condition to be established which suggests somewhat slow
streamer establishment. System frequency was around the 1.2MHz mark.
Experiments at lower frequencies show fewer rings are required to
establish this condition suggesting that spark formation speed is
indeed more sympathetic to low frequency running. At some stage I
hope to confirm this by recording this condition in a low frequency
system. Something of a proof would be that the time elapsed being
identical regardless of the number of rings would support this view.
One other point of interest is the prolonged secondary ring under
lighter loading conditions which had me foxed until I realised that
such loading is presenting a major phase difference to the primary
which is then somewhat uncoupled to the resonator. I hold the view
strongly that quench in a lot of systems is very heavily dependent
on secondary loading conditions from these results.
At any rate, for those without scopes, here is your chance to see
the waveforms obtained from a real spark producing system.
My regards to Richard,
Malcolm