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Re: Coil Efficiency (quenching)
From: FutureT-at-aol-dot-com[SMTP:FutureT-at-aol-dot-com]
Sent: Tuesday, July 29, 1997 3:29 AM
To: tesla-at-pupman-dot-com
Subject: Re: Coil Efficiency (quenching)
<<snip> I would like to propose a two tests for quenching ability (and
> you _have_ to use a scope and HV probe):
> (a) see whether you can quench a primary alone under single shot
> conditions (best of luck). Does your airblast noticeably affect the
> number of rings up to quench?
Macolm,
the quenching of my gaps also depend on successfully "draining" the
energy from the system quuickly. I suspect that my quenching would
be miserable using a primary alone. In general, I haven't had any luck
with air blasts in conjunction with my sync-gap, but I still have to try
the high volume method suggested by Dave Sharpe.
> (b) set a system up to quench first notch under single shot conditions
> and then progressively tighten coupling to the point where the quench
> no longer works to first notch. Compare this setting with that which
> you obtain with the air blower switched off. Is it the same for an
> attached spark as for an air streamer? What do the results say about
> quenching affectiveness (yes, I think I already know the answers :)
I've done the test for free air vs. attached streamers some time ago; the
quench moves from 1st notch to 2nd notch. I can't remember if I used
a hard ground. The gap can only accomplish so much, good quenching
depends greatly on obtaining reasonable impedance matching. (I know
you know all this :)
John Freau
> Malcolm
>>