From: "Malcolm Watts"
Date: Wed, 16 Oct 2002 17:01:56 +1300
Subject: Re: [TSSP] F A N T C: - It's NEW! - and needs some TSSP input
Hi Paul,
On 15 Oct 2002, at 22:36, Paul wrote:
> Malcolm wrote:
> > - my comment about the V and I scaling still applies
> > - Ldc for the secondary appears to be too high by about 6%
> > - Ldc for the primary appears to be high by about 12%
> > - Fres is too low (122-odd vs 130kHz)
> > - k looked to be about right
>
> I'd expect it to do better than that, certainly on Ldc.
> I take it this is the coil mw1 in
> http://www.abelian.demon.co.uk/tssp/cmod/
Correct.
> I'll run the details through at this end. tssp gets 46mH for
> Ldc, how does that compare?
Very well. FANTC gave 48.?mH
> You should specify your topload to fantc as a sphere. You
> can put in separate horizontal and vertical diameters to
> describe the spheroid.
Right. BTW, the primary is correct at about 18uH. Apologies. I kept
on thinking 16 for some reason but in fact 6 is the amount it
increased by when I added another turn several years ago. Very sorry
about that. I can no longer fire it here. Too many changes in the
building and nowhere to do it.
The coil only just breaks out and the topload is a bit lumpy in
places. Discharges to date with about Vp = 8.5kV and the 0.iuF cap
and a rep rate randomly varying between 100 and 200 BPS hits in
excess of 5'.
From the plots it looks as though I could do better with a
different value of k although it runs rather well as is. HOwever, it
is unlikely that I will find out.
I have more coils planned for future construction and they won't
have to live at work. Also, I have refined the design procedure to a
high degree and am anxious to put put it to the test.
Again, my apologies for all the flimflam. I've spent most of the
year designing a range of unrelated electronic devices with no time
for coiling.
Regards,
malcolm
Maintainer Paul Nicholson, paul@abelian.demon.co.uk.