From: Chuck Simmons
Organization: You jest.
X-Mailer: Mozilla 4.61 [en] (X11; U; Linux 2.0.33 i586)
Subject: Re: Scary, high voltage power supplies. (7Kv, 50A, 50ns, 20Khz)
Date: Sat, 09 Nov 2002 20:12:23 GMT
NNTP-Posting-Date: Sat, 09 Nov 2002 12:12:23 PST
> I'm interested in making a copper-halide vapour laser.
> This is basically a tube with .01 bar of helium/neon in, some copper
> chloride (or bromide), which is heated to 400C, and large pulses of power
> This results in a bright green laser beam, with around 1% of the input
> energy, in an ideal case.
> I can get to 7Kv 50ma easily (microwave transformer, and a few diodes
> and caps).
> I'm less sure exactly how to go about pulsing it, though I am clear
> that I'll be doing it from another room, doubling up on all the
> switches and bypass resistors, and having voltmeters on all the caps.
> I assume there is no easy way of building a transformer capable of going
> from a 50ns 500A 700V pulse to 7Kv (I have a large number of BUZ80 800V, 4A
> FETs around).
This appears to be an ideal application for a hydrogen thyratron. These
are made for radar modulators and laser pulsers and are available from
several companies. Some application information may be available as
I did a little looking around and I found both 5C22 and 4C35 hydrogen
thyratrons in stock. They are a bit pricey. Both types are currently
manufactured. I can't remember the critical specifications but I'm
pretty sure either would do (the 5C22 is larger and can handle more
... The times have been,
That, when the brains were out,
the man would die. ... Macbeth
Chuck Simmons firstname.lastname@example.org