RE: Valves

While it is certainly possible to make a saw tooth oscillator
with a thyratron I am not sure this is the best approach for
an initial tube coil. Some of the list members have experience
using thyratron circuits that, in a sense, substitute for the
spark gap oscillator (I am trying to avoid a long discussion).

I suggest that you find a high power triode or tetrode and use a
simple time proven plate tuned oscillator circuit with self rectification.
 For example 811A and 810 tubes can build tube coils capable of 10-12" corona.
An 833A can build a really nice and quite powerful CW coil that
can produce 24" corona discharge.

However, that thyratron is a dandy tube that I would certainly pick up
for the right price and add it to the parts supply. There are quite a few
HV uses (including tesla coil applications). It is simply my opinion that
this is not a good starting point.
Remember RF burns.

John W. Gudenas, Ph.D.
Department Chair of Computational and Natural Science
Aurora University, Aurora IL 60506
Office: 630-844-5539     Fax: 630-844-7830

-----Original Message-----
From:	Tesla List [SMTP:tesla-at-pupman-dot-com]
Sent:	Wednesday, September 22, 1999 7:57 PM
To:	tesla-at-pupman-dot-com
Subject:	Valves

Original Poster: Mark Finnis <mefinnis-at-medicine.adelaide.edu.au> 

Hi Again,

I recently asked about the following tube:

KB/P		1 of, a large beast with additional markings 5C22/NC

So, I found looking through the www:

Hydrogen Thyratron
Peak forward anode V:	16kV		(a smile appears)
Ave anode current:	200mA
Peak anode current:	325A		(a slightly larger smile)

 From the little notice I have taken of tube postings, i suspect this would 
be well suited to a tube-based coil.

Now, I have NO experience with tubes per se (but I'm keen!).  Could some 
kind person give me an idea of where to start (a schematic would be 

Many thanks



Tesla Home Page:   http://www.adelaide-dot-net.au/~mefinnis/