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4hv.org :: Forums :: Tesla Coils
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GDT and UCC driver Problems

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Steve Conner
Sun Mar 18 2007, 11:02AM
Steve Conner Registered Member #30 Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
I agree with the saturation thing, also your DC blocking cap could do with being bigger. I used 4uF on my SSTCs.
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ragnar
Sun Mar 18 2007, 10:06PM
ragnar Registered Member #63 Joined: Thu Feb 09 2006, 06:18AM
Location:
Posts: 1425
IMHO your problem is twofold: not nearly enough turns on your GDT per winding (for 50kHz), and I suspect your core material is crap, too.

What colour is the core? Is it covered in coloured epoxy?
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Andrew L.
Sun Mar 18 2007, 10:25PM
Andrew L. Registered Member #515 Joined: Sun Feb 11 2007, 02:06PM
Location: Slovenia/Ljubljana
Posts: 94
You know what I have the same problem. When the GDT secondary isn't connected to the mosfet the signal is great but when I connect it to the mosfet the signal becomes really crappy.
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Mike
Mon Mar 19 2007, 12:33AM
Mike Registered Member #58 Joined: Thu Feb 09 2006, 05:40AM
Location: Tri-Cities, Washington, US
Posts: 317
material is ferite not covered in anything
i will post back once I rewind it.

Mike
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thedatastream
Mon Mar 19 2007, 09:58AM
thedatastream Registered Member #505 Joined: Sun Nov 19 2006, 06:42PM
Location: Yorkshire!
Posts: 329
Link2

</shameless>

James
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