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Registered Member #1732
Joined: Thu Oct 02 2008, 02:34PM
Location: Huntsville, AL
Posts: 112
Hi All,
Just thought I'd share my sixth DRSSTC here. It is collaboration between myself and Cameron Prince. It's a rather large coil, standing about eight feet tall. It also makes rather large sparks.
The secondary is a roughly 12" diameter form wound with #22AWG wire. The winding length is 60". With a 48" x 12" topload the coil has a F0 of ~36kHz.
The bridge is a full-bridge of CM600HA-24H IGBTs. These are all hooked up by a laminated bus that I designed.
Solidworks rendering of the bridge.
Assembled bridge.
Here's a shot of the last test run. We didn't get much time to fool with it, because it was raining off and on. When we finally did get it up and running we didn't set the target very far away. As I recall it was only about 13 feet from the coil, which is no sweat for this coil.
Here's a video of the coil running in "ARSG" mode.
Registered Member #1732
Joined: Thu Oct 02 2008, 02:34PM
Location: Huntsville, AL
Posts: 112
Dr. ISOTOP wrote ...
Key specs? (MMC, peak current, etc?)
MMC 8700VAC 1.25µF 750ARMS ~125lbs Peak current is undetermined as of yet, but I have the limiter set to 3000A.
Sigurthr wrote ...
What are you using to cool the bridge with, and is that a spun toroid?
The bridge is cooled by a 8" fan. I think it's a few hundred CFM, which is overkill. The toroid is not spun, it's a foam core with Aluminum tape wrapped around it.
Registered Member #3212
Joined: Sat Sept 18 2010, 06:48PM
Location:
Posts: 4
You know, that is probably the best coil I've ever seen! Granted, there have been a lot of SG Power Coils, but this is a work of art! Sure you can throw SG power at anything and create sparks of length.. But this is a DRSSTC with balls!!!
Registered Member #5777
Joined: Tue Jul 17 2012, 03:34AM
Location: Moulton Al
Posts: 3
I second Barts response! That is the by far the best DRSSTC I've ever seen not to mention the largest . I think it might need at least 1lb more caps though becuase it can still roll and the wheels haven't buckled
All Jokes aside I'm sure Phillip has put ever spare moment into designing and perfecting this magnificent Work. And I'm sure more amazing work will be coming in the future.
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DRSSTC VI
