RE: IGBT SSTC finally possible?

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

Original poster: jimmy hynes <chunkyboy86-at-yahoo-dot-com> 

Hey,

 >From what I've seen (Gary Johnson's paper) the voltage on the topload 
increases until breakout,
then falls pretty rapidly to a lower voltage where it stays until the end 
of the burst.

--- Tesla list <tesla-at-pupman-dot-com> wrote:
 > Original poster: "Steve Conner" <steve.conner-at-optosci-dot-com>
 >
 >  >Has someone ever observed, or even simulated, or better, simulated and
 >  >observed, the output waveforms of these CW, or interrupted CW coils?
 >
 > Yes, we observe and simulate them all the time ;) We tend not to talk about
 > it too much on Pupman though.
 >
 > The output waveforms of CW/ICW coils are just a sine wave that rings up
 > until breakout is reached. This is usually at a fairly low voltage compared
 > to a SGTC to prevent stressing the inverter, as primary current goes up in
 > proportion to output voltage. (But the new DRSSTC/ISSTC type coils are kind
 > of rewriting the rule book here- they can handle the multi-hundred-amp
 > primary currents needed to breakout a SGTC type toroid.)
 >
 > Anyhow, once the breakout voltage has been reached, the output voltage more
 > or less stops ringing up- it's more or less "clamped" by the corona loading.
 > (Again the DR and I type setups are different, they have enough power to
 > overcome this, same as a SGTC.) It then stays there until the interrupter
 > turns the inverter off (or the half-cycle of line voltage ends.)
 >
 > Steve C.
 >
 >


=====
Jimmy