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: Sun, 10 Nov 2002 20:45:10 GMT
NNTP-Posting-Date: Sun, 10 Nov 2002 12:45:10 PST
John Woodgate wrote:
> I read in sci.electronics.design that bruce varley
> wrote (in <email@example.com>) about
> 'Scary, high voltage power supplies. (7Kv, 50A, 50ns, 20Khz)', on Sun,
> 10 Nov 2002:
> >I too came out uscathed after tinkering with voltages up to many KV all
> >through my teens, so I can see where you're coming from, Chuck. But after 30
> >years in heavy industry, seeing with my own eyes more than one poor person
> >get fried, I feel compelled to state my humble opinion that it takes more
> >than just a bit of care and good luck to keep the risks at an acceptable
> >level if you're working with any sort of electricity and particularly 'high
> It's only the survivors who write 'I was building Marx generators in my
> cradle and I didn't come to any harm'. We should also hear from those
> that did, but for many, their e-mail is permanently down.
I never thought of all of the accidents you talk about here. In 40 years
of experience some 10 years af which involved high voltage, I never saw
or heard of an accident involving equipment I worked on. The only death
I know of at a site where I worked was a fellow who died while servicing
a 600kV DC power supply. He died of sulfur hexafluoride inhalation.
Sulfur hex is not particularly toxic but it is very dense and the guy
was dead before anyone figured out how to clear the gas out of his
lungs. He had walked inside the power supply before purge was complete.
The number of accidents that are talked about here indicate that
incredibly lax high voltage protocols are practiced in some places.
... The times have been,
That, when the brains were out,
the man would die. ... Macbeth
Chuck Simmons firstname.lastname@example.org