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Re: 3rd harmonic trap

Original poster: "Jolyon Cox" <jolyon@xxxxxxxxxxxxxxxxxxxxxxxx>

if a 3rd harmonic band-reject filter or "trap" would not work, how about a
band-pass filter tuned to the fundamental of the TC? Would this not a
correct description of the of  circuit described in the following?

----- Original Message -----
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Tuesday, March 22, 2005 1:47 AM
Subject: Re: 3rd harmonic trap

> Original poster: Jimmy Hynes <jphynes@xxxxxxxxx> > > Sorry, but it won't work. Although it will block that frequency pretty > well, the pole is just moved a little bit. > > It would be desireable to supress the higher modes to keep your driver > on the fundamental mode. I tried it once to keep my SSTC from jumping > to other modes during ground arcing (base current feedback is more > susceptible to it), and realized why it wouldn't work after some more > fets blew up :P > > > On Mon, 21 Mar 2005 11:35:56 -0700, Tesla list <tesla@xxxxxxxxxx> wrote: > > Original poster: "Jolyon Cox" <jolyon@xxxxxxxxxxxxxxxxxxxxxxxx> > > > > Dear List > > I am wondering whether it would be possible to use a parallel-resonant LC > > circuit in series with the primary of an SSTC as a "trap" to suppress the > > unwanted 3rd harmonic mode of oscillation. > > Does anyone know if this is feasible or even desireable? > > > > Jolyon > > > > > > >