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Magnetic pulse Tesla Coil needs megawatt directional coupler (fwd)
---------- Forwarded message ----------
Date: Fri, 27 Mar 1998 13:01:04 -0500
From: Alan Sharp <AlanSharp-at-compuserve-dot-com>
To: "INTERNET:tesla-at-pupman-dot-com" <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)