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Re: Bi-Polar DRSSTC

Very nice work Chris.
I have a few questions after watching your video.
1) Have you scoped the controller circuit to see what BPS you are running the DRSSTC at? It does indeed scream!

2) What IGBTs are you using? I couldn't tell if it was a half bridge or full bridge.

This is of interest to me because when I run my DRSSTC at that screaming BPS I usually, (and quite undramatically) blow my IGBT's.
I can run for an hour at lower BPS.  Yes, I do push the coil and IGBT's and certainly duty cycle is a factor, but there may be more going on too.

Great video and it was nice to meet you at Cheesehead.

John W. Gudenas, Ph.D.
Professor of Computer Science

On Jan 2, 2007, at 9:25 PM, Tesla list wrote:

Good day,

Thought you would enjoy some pictures of my little BI-Polar DRSSTC @


Video @  http://www.youtube.com/watch?v=os1FbjORGN0

Slide show @  http://www.youtube.com/watch?v=7xnIntH1XjY

This has to be the loudest coil I have, it screams?!

Not really a power hog as only takes 6 amps at 150 volts, no doubler.

Christopher @ http://www.drspark.org/