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Bart wrote:
> I assume we could load the spice into any arbitrary spice
> program (LTSpice, etc..).
That's the intention. Maybe some flavours of Spice will cope
better than others with the large sub-circuits. I've never put
that to the test. Here I use ngspice under Linux which does OK.
You can test a Spice program if you like, using a sub-circuit
generated by tssp (the new program makes a very similar file).
A sub-circuit for Marco Denicolai's Thor system,
http://abelian.org/tssp/thors.cir
produced by tssp. It's a 4 terminal 'device' although it also
implicitly uses the ground node '0'.
This diagram demonstrates the connections to the sub-circuit,
http://abelian.org/tssp/thors.model.gif
N1, N2, N3, N4 are the four pins of the sub-circuit and the
other numbers are node numbers in my spice model. The C to
ground from the secondary includes all the Cext from the coil
plus the topload.
Cpri is 96.7 nF and you might have to experiment with Rgap.
VB is a zero volt source which exists only to measure the
base current.
I plotted (back in 2004) some base current waveform comparisons
for Thor, comparing transient simulations from tssp and Spice,
against the measured current for a normal firing with Vpri of
around 14kV.
http://abelian.org/tssp/thors.compare.gif
Not bad over the first beat. After that the small differences
in mode frequencies and Q factors lead to increasing divergence.
We use secondary base current because it is the most revealing
measurement - top volts (pin 3) would not show the overtones
anything like as well.
Here's a link to Thor
http://www.saunalahti.fi/dncmrc1/
--
Paul Nicholson
--
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