Re: PlasmaSonic II Manual - Updated with new diagrams

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

Original poster: dhmccauley-at-spacecatlighting-dot-com 


SSTCs typically don't use a resonant primary tank circuit.  Therefore, there
is no need to match primary coil impedance for proper operation.
However, there are times when primary impedance comes into play.  For high
power SSTCs, you want a very low impedance to maximize current
into the primary coil and therefore maximize output arc.  Also, there are a
few who design resonant tank circuits to work with the secondary, but i have
not
been following their work to closely to comment on.

But, for standard operation, there is no need to match primary inductance to
anything.  Typically for audio modulation, 10-15 turns will work fine.

Dan


 > Dan, very good work. I have ordered those IXFN73N30's from Future, but
 > they are back ordered :-(
 >
 > I have what I hope is a very simple question. I know SSTC are really
 > only about resonance, but how do you match the impedance with the
 > Primary coil? How does primary inductance play out? Or is it all about
 > coupling? Maybe someone can (in real simple terms ;-)) explain the
 > theory. I understand the circuit up to the primary, I think...
 >
 > I know I am showing my ignorance, but without asking those stupid
 > questions one never learns...
 >
 > Thanks,
 >
 > David Trimmell