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From: keithd@cadovax.UUCP (Keith Doyle)
Newsgroups: net.analog,net.physics
Subject: Tesla anyone?
Message-ID: <391@cadovax.UUCP>
Date: Tue, 5-Feb-85 14:11:23 EST
Article-I.D.: cadovax.391
Posted: Tue Feb  5 14:11:23 1985
Date-Received: Sat, 9-Feb-85 09:19:27 EST
Organization: Contel Cado, Torrance, CA
Lines: 27
Xref: watmath net.analog:147 net.physics:2172

[......]
Anyone out there in net-land interested in discussions about Nikola Tesla
or Tesla coils?

One of my Tesla books indicates that the effects of high-voltage discharges
change characteristics considerably depending on the frequency of the
coil.  I've always wanted to build a coil where I could observe these
different effects.  Right now I have a simple Tesla coil made with a
neon-transformer driving a 2 1/2 foot coil and surplus oil-filled
H.V. capacitor.  Unfortunately, Tesla's experiments were performed
with large multi-pole generators (400+ poles!) that he constructed
himself.  I wonder what the simplest method of getting high current
at frequencies in the range of 50khz to 500khz?  Recently at a 
surplus store I ran into an old rack-mount R.F. amplifier.  Could
something like this be used to drive a coil at varying frequencies?
How could I keep from smoking the amplifier?  Or, as an alternative
what transistor circuits could be used as amplifiers?  I'd like
to be able to take a simple variable oscillator circuit and give
it enough current driving capability to power a coil who's primary
is probably only a couple of ohms.

In addition, what kind of successes, horror stories, etc. have any of
you out in net-land with home-made Tesla coils?

Keith Doyle
{ucbvax,ihnp4,decvax}!trwrb!cadovax!keithd