From: "Malcolm Watts"
Date: Tue, 14 May 2002 08:56:08 +1200
Subject: Re: [TSSP] Topload breakout potentials
Hi all,
Minor correction to this post from me:
On 13 May 2002, at 9:34, Malcolm Watts wrote:
> Hi John, all,
>
> On 12 May 2002, at 9:28, FutureT@aol.com wrote:
>
> > In a message dated 5/11/02 6:32:04 PM Eastern Daylight Time,
> > paul@abelian.demon.co.uk writes:
> >
> >
> > > Tuning low seems to keep quite a lot of energy in the primary,
> > > thus reducing the peak topvolts but perhaps enabling the beat
> > > envelope to be sustained over more beats, thus generating
> > > fewer streamers but allowing them to grow longer. Is this a
> > > recommended way to deal with a too-small topload?
> > >
> > > Paul,
> >
> > I've never really heard the issue discussed much before. It seems
> > that Malcolm's toroid on his coil has such a large ROC, that
> > it may be tuned correctly, yet still barely breakout. This may
> > be why he's getting such good results. It would be interesting
> > to see if Malcolm's coil's tap points, etc. indicate a perfect tune
> > between pri/sec. Probably you've calced all that anyway
> > Malcolm? If Malcolm's coil calcs out to be tuned, this would
> > suggest the tuning model is working well. Even if Malcolm's
> > primary is tuned lower than Fsec, it may be *closer* to a
> > proper tune than my TT-42.
> >
> > Cheers,
> > John
>
> My coil is pretty much primary Fr = secondary Fr. I don't have a lot
> of latitude for tuning since the primary has 5 turns and all are used
> (about 16uH and Cp 100nF, secondary+topload running at 130kHz).
That should have been Np = 4 as mentioned in the posted
specifications. Sorry for any confusion.
Regards,
malcolm
Maintainer Paul Nicholson, paul@abelian.demon.co.uk.