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Registered Member #1829
Joined: Sun Nov 30 2008, 01:06AM
Location: Raleigh N.C.
Posts: 74
From this thread, I decided to start a new thread in the TC forum.
Ok, mag amps seem like a neat little piece of technology. I've read a few articles on them and now I'm wondering if one could be used in place of a spark gap on a tesla coil. There would have to be some dc control circuit of course and if the one I have couldn't handle the current I'd have to wind my own but, has anyone ever tried using one of these in a TC?
Registered Member #152
Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
I think the peak currents available from these would be nowhere near the wanted currents for a TC... Remember that to support the full AC voltage, it would be as big as the transfmer powering it, just the resistance of the winding alone would limit the current greatly...
Registered Member #1225
Joined: Sat Jan 12 2008, 01:24AM
Location: Beaumont, Texas, USA
Posts: 2253
I know nothing about magnetic amplifiers, but if you want a solid state spark gap, the SISG is a very efficient alternative to spark gaps. Someone got 24 inch sparks with a small secondary, and only 117 watts in with 6 of these series SISGs.
They basically have a sidac that breaks down at the set voltage (judged by number of series sidacs and sidac voltage), which turns an igbt on, which conducts and act as a closed spark gap. then the anti-parallel diode will conduct in reverse to allow the oscillations to take place. The quenching is much better, and heat is reduced, which means much less energy wasted as heat.
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Mag amp switch
