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 20:35:03 GMT
NNTP-Posting-Date: Sat, 09 Nov 2002 12:35:03 PST
Chuck Simmons wrote:
> email@example.com wrote:
> > 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
> > applied.
> > 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
A bit more.
Both tubes indeed look OK.
... The times have been,
That, when the brains were out,
the man would die. ... Macbeth
Chuck Simmons firstname.lastname@example.org