Re: Recent s.s.t.c. work

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "K. C. Herrick" <kchdlh@xxxxxxx>

...and further:  I find, in the simulation (and on further 
consideration in the real world), that D8/D9 ought to be connected 
right at the IGBT gate rather than separated from it by R6.  Moving 
them in the simulation and upping R6 to 5 ohms or so cuts the 
oscillation in D8/Q2--but there's some still present in 
D9/Q3.  Raising R6's resistance to 15 ohms or so also greatly 
improves the phase-shift problem--but I'd like a better way to do 
that since such a large R6 starts to roll off the rise/fall of the gate drive.

Maybe more later...

KCH

Tesla list wrote:
> Original poster: "K. C. Herrick" <mailto:kchdlh@xxxxxxx><kchdlh@xxxxxxx>
>
> Here's a bit of a puzzle; perhaps someone can offer a clue toward 
> solving it.  I post
>
> <http://www.hot-streamer.com/temp/tch-drvr.jpg>http://www.hot-streamer.com/temp/tch-drvr.jpg 
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