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Registered Member #2273
Joined: Thu Aug 06 2009, 07:02PM
Location:
Posts: 37
Hi,
after the sucess with my first drsstc i decided to build a bigger and better one with OC Protection and primary feedback. I want to use the circuit of CTC's drsstc 6 which u can find under But instead of the fullbridge i want to use a halfbridge with one IGBT brick. But i have a few questions i want to ask.
1.) Are there any mistakes in the circuit? Did anyone build this drsstc?
2.) The OC protection, it switches the signal to 0V if the current goes over the prepared value, right? So, can i turn the On time as high as i want without exploding igbt's? And which role does the flipflop play in the OC protection?
Registered Member #33
Joined: Sat Feb 04 2006, 01:31PM
Location: Norway
Posts: 971
This circuit is more or less the same as Steve Wards older DRSSTC driver. This ciruit has seen some improvements since that, so I suggest you check out his newer driver at
Registered Member #2292
Joined: Fri Aug 14 2009, 05:33PM
Location: The Wild West AKA Arizona
Posts: 795
I wouldn't touch that circuit with a 10 foot pole, then again that may just be me. I would try some of Steve's new stuff much improved on. Much better for driveing larger IGBT bricks.
Registered Member #160
Joined: Mon Feb 13 2006, 02:07AM
Location: Melbourne, Australia
Posts: 938
Goodchild wrote ...
I wouldn't touch that circuit with a 10 foot pole, then again that may just be me.
I don't see why. Martin has made many fine DRSSTCs and has even designed audiomodulation for them. His work is exemplary. Do you say this from experience or are you just being inflammatory?
Registered Member #30
Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
Well, sure Martin/Reaching is a nice guy, and he built some good stuff. But Steve Ward's latest driver is under active development right now. You can see pictures of it making crazy-big sparks on his Flickr page.
If it were an open-source software project, we'd say it was "maintained", and that's a good thing.
I recommend Steve's circuits over my own PLL drivers nowadays, because they're not maintained any more. If everyone builds the same thing, we can help each other out and find the bugs. Steve doesn't post here any more, but I guess you can e-mail him if you find one. :P
Registered Member #2292
Joined: Fri Aug 14 2009, 05:33PM
Location: The Wild West AKA Arizona
Posts: 795
Coronafix wrote ...
Goodchild wrote ...
I wouldn't touch that circuit with a 10 foot pole, then again that may just be me.
I don't see why. Martin has made many fine DRSSTCs and has even designed audiomodulation for them. His work is exemplary. Do you say this from experience or are you just being inflammatory?
I say this from experience ive had so many problems with that circuit. not that exact circuit but it's almost the same.
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DRSSTC 6 by CTC
