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Magnetic pulse Tesla Coil needs megawatt directional coupler


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From:  Alan Sharp [SMTP:AlanSharp-at-compuserve-dot-com]
Sent:  Friday, March 27, 1998 12:01 PM
To:  INTERNET:tesla-at-pupman-dot-com
Subject:  Magnetic pulse Tesla Coil needs megawatt directional coupler

Scott wrote:

>But how do you get the energy out in a form that can 1) drive a tesla
>primary and 2) not destroy a wimpy FET?

There are at least two ways of doing this:
One way is to drive a tesla primary with a half
bridge or full bridge switching power supply, either directly
or through a matching transformer. The Fets should be protected
with high current schottky diodes in series with the FET, and then
a high current ultra fast rectifier diode reverse biased accross
both FET and schottky, effectively clamping the bridge output
to the supply rails. 
Second way is to use a magnifier set up, where the Tesla coil
is bottom Fed, by a transformer driven by a switching power
supply.
In both cases snubbers can also be used to take the sting
out of fast transitions.

Check out my web page:

http://ourworld-dot-compuserve-dot-com/homepages/AlanSharp

The site is pretty much devoted to Solid State driven tesla coils.

Have fun,

Alan Sharp (UK)