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Registered Member #2292
Joined: Fri Aug 14 2009, 05:33PM
Location: The Wild West AKA Arizona
Posts: 795
I'm starting this project thread for my newest project. The dead line for this project is The Winter Western Teslaton 2011, as I hope to be demoing it there with my other musical coils. This is the fifth DRSSTC I have built so far.
Well Ill start with some specs (as we all do with these project threads ):
Topload: 12 x 45 inch tube/ring toroid very similar to Finn's and Steve's
System Fo (With topload): 40KHz
Power electronics: Full bridge CM600HA-24H GDT gate drive (no high side gate drive junk ) 650VDC bus (for now, later on I plan to have a PFC boost convert for this system at 750VDC)
Controller: Steve Ward's UD 2.0
Interrupter: My custom digital regular/MIDI Interrupter
OK now for some photos!
Me standing next to the un-wound secondary + the bare bones CM600 H bridge
Secondary end caps
Winding the secondary:
Epoxy on secondary:
Well that's all I have for now, I will update my progress as the build progresses. Don't hold your breath it's a long processes
Registered Member #1875
Joined: Sun Dec 21 2008, 06:36PM
Location:
Posts: 635
That's a beautiful secondary. I'm working on a ~12" secondary with low Fres (26 gauge wire) that I'm eventually going to convert to solid state, but I could only get cardboard with dimensions like those. Where did you find PVC that wide?
Registered Member #2292
Joined: Fri Aug 14 2009, 05:33PM
Location: The Wild West AKA Arizona
Posts: 795
I have a friend that got me this pipe at a local Irrigation supply. I did try Sono tube at one point, but it's just so much work to prep and never comes out the same as just strait PVC.
Registered Member #242
Joined: Thu Feb 23 2006, 11:37PM
Location: Erie PA
Posts: 210
wow, that is a smooth secondary. I have a similar sized one made with Sonotube. Now I wish I would've used PVC.
How do you plan on water cooling the primary? I'm in the process of converting mine to a DRSSTC, and using 3/8 would make things a lot easier and cheaper.
Registered Member #2292
Joined: Fri Aug 14 2009, 05:33PM
Location: The Wild West AKA Arizona
Posts: 795
Water cooling is easier than you mite think. I just got a small fountain pump, that will sit in a bucket of water next to the coil. I will pump water into one end of the primary tube and another tube will let the water flow back into the bucket. I will have some pics of this setup in a week or so when I build the primary.
Just wondering how much primary current do you plan on running?
Registered Member #160
Joined: Mon Feb 13 2006, 02:07AM
Location: Melbourne, Australia
Posts: 938
You might consider adding a old heat exchanger out of a fridge into your water cooling circuit. Some cpu fans would also greatly help. Otherwise after a while, probably not very long, your pump will be pumping hot water back to the IGBTs. Fantastic looking secondary.
Registered Member #2292
Joined: Fri Aug 14 2009, 05:33PM
Location: The Wild West AKA Arizona
Posts: 795
Coronafix wrote ...
You might consider adding a old heat exchanger out of a fridge into your water cooling circuit. Some cpu fans would also greatly help. Otherwise after a while, probably not very long, your pump will be pumping hot water back to the IGBTs. Fantastic looking secondary.
Ive seen the same thing done with 1/4 primary and the same current (even more heat) and only used a bucket of water, and it ran with almost no heating of the water.
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