Re: Waveguide TC

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Jim Lux by way of Terry Fritz <twftesla-at-qwest-dot-net>" <jimlux-at-earthlink-dot-net>

Not really.. A tesla coil is more of two coupled lumped LC circuits, rather 
than a transmission line. The "1/4 wave transmission line" model has pretty 
much been discarded (it's fairly easy to show that lots of very well 
performing TCs don't resemble 1/4 wave).  For that matter, the phase shift 
between current at the top and bottom of the TC is nowhere near 90 degrees, 
as it would be for a transmission line.


At 08:06 AM 12/13/2002 -0700, you wrote:
>Original poster: "Jolyon Vater Cox by way of Terry Fritz 
><twftesla-at-qwest-dot-net>" <jolyon-at-vatercox.freeserve.co.uk>
>
>
>----- Original Message -----
>From: "Tesla list" <tesla-at-pupman-dot-com>
>To: <tesla-at-pupman-dot-com>
>Sent: Friday, December 13, 2002 2:38 AM
>Subject: Re: Waveguide TC
>
>
> > Original poster: "Jim Lux by way of Terry Fritz <twftesla-at-qwest-dot-net>"
><jimlux-at-earthlink-dot-net>
>
> > Which is what a Tesla coil is, is it not?
>Jolyon.
>
> >
> > One can also make a transmission line that's about a quarter wavelength
> > long and drive it with a suitable matching network at one end which is
> > shorted, leaving the other end open. The line acts as an impedance
> > transformer using Zout*Zin = Zline^2, and if Zin is really small, Zout is
> > really big, implying high voltage for a given power (or, another way of
> > looking at it, you set up a standing wave in a high Q resonator (i.e. the
> > transmission line).
> >
> >