Subject: Solid State Tesla Coil Success!
From: Mike Poulton
Organization: MTP Technologies
Date: Wed, 25 Dec 2002 06:30:58 GMT
NNTP-Posting-Date: Wed, 25 Dec 2002 01:30:58 EST
Awhile ago I started a thread asking for various bits (and some large
chunks) of information on solid state Tesla coil design. I was building a
coil to run from rectified 208V 3-phase power, hoping for somewhere around
3-4kW input. Well, it finally works well. I have not run it from 3-phase
yet, but running from 120V at 12A, I got really big sparks and no smoke
from the semiconductors. I ran it at reduced power (120V, 6A) for a few
hours with no problems. The input impedance is rather unusual -- it seems
to draw almost constant current regardless of voltage, and the current can
be varied by changing the number of primary turns. I haven't blown any
mosfets with my present configuration. However, I did burn the secondary
with a 24" arc down through the center. So, as soon as I wind a new one I
will try it with a 240V input and see how it does. When I get back to the
university after winter break I will be able to try the 3-phase input.
Thanks again to Win and all the others who helped with this project -- I
couldn't have done it without you guys!
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