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Re: Magnetic pulse Tesla Coil needs megawatt directional coupler (fwd)



---------- Forwarded message ----------
Date: Fri, 27 Mar 1998 10:46:44 -0700
From: Bill Lemieux <gomez-at-netherworld-dot-com>
To: Tesla List <tesla-at-pupman-dot-com>
Subject: Re: Magnetic pulse Tesla Coil needs megawatt directional coupler

Scott Stephens:

> Poor FET went POOF! Stopping that
> current was like trying to stop a freight train.
> 
> One solution would be to place a spark gap on the inductor, and let the gap
> fire to deliver its charge to a TC primary. All the energy would need to be
> absorbed in the first cycle, as the next oscillation a nasty voltage level
> would appear at the FET drain (FET is connected common source). So a high K
> value, like .999 would be necessary with a hot spark mandator.

What about Positive Temperature Coeffecient Resistor switches, or even
the new
high-voltage, high-current Gate Turn-Off thyristors?

-Gomez

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