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Re: TC Output Impedance Matching (fwd)
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To: tesla@pupman.com
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Subject: Re: TC Output Impedance Matching (fwd)
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From: Tesla List <mod1@pupman.com>
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Date: Tue, 14 Jul 1998 14:53:19 -0600 (MDT)
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Approved: mod1@pupman.com
---------- Forwarded message ----------
Date: Mon, 13 Jul 1998 22:26:08 -0700
From: lod@pacbell.net
To: Tesla List <tesla@pupman.com>
Subject: Re: TC Output Impedance Matching (fwd)
"Antonio Carlos M. de Queiroz" wrote:
> > BTW, the non-empirical, mathematically derived equation for a
> > critically damped secondary is Rl = 2 x SQRT(Ls/Cs).
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> This is the relation for a resistance -in series- with Ls and Cs.
> For a resistance Rl -in parallel- with an Ls, Cs parallel circuit, as
> an arc in parallel with a Tesla coil secondary, the relation is:
> Rl = Q x sqrt (Ls/Cs)
> The critically damped situation corresponds to Q=0.5.
> Q=0.707 corresponds to the no gain situation for a voltage applied
> to the base of the inductor, in sinusoidal steady state.
Whoops! You are indeed correct. I was recently designing a PFN
for a kicker magnet, that had a _series_ damping resistor.
--
-GL
www.lod.org