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Registered Member #1225
Joined: Sat Jan 12 2008, 01:24AM
Location: Beaumont, Texas, USA
Posts: 2253
You should be more specific with your questions for convenience to anyone who may be able to answer it, otherwise we might as well just overlook the thread and move on to the next one.
Anyhow, i am pretty sure i am correct in assuming you mean 30v on the gate. This IGBT has no zener's on the input, so it is relatively safe to run at 30v. If there where zeners, higher voltage would make them become reverse biased, in turn killing them and shorting the gate. You could likely fix that with a beefy low voltage transformer to blow the open, though.
The only problem with driving gates with higher voltage is gate oxidation, and worst case scenario, breakdown. But, seeing that IGBTs in Tesla coils are either short-lived, or just not used often/high duty cycle, it would be no problem.
What a coincidence, just a minute ago i figured i would make an OLTC because i have a few 200 amp 600v IGBTs that are much too slow for anything else (the datasheet suggests 1KHz max)! I'll let you know if i figure out anything useful, seeing that OLTC's never really caught on as well as other types. There is not much info on the net!
Registered Member #2922
Joined: Sun Jun 13 2010, 12:08AM
Location:
Posts: 226
Hey man, sorry, because i'm from brazil and my english isn't good.
I would be happy if we help us make an OLTC!
Do you have msn, facebook? we can talk about this there
I want use microwave capacitor, two IRG4PC50UD each with one turn of the primary. But i don't know what is the "best" secondary frequency. I read that is better less than 100khz to get a bigger bang of energy. What you know about this?
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