From: "Marc H.Popek"
References: <3DCD8580.27B3DE1D@webaccess.net> <firstname.lastname@example.org>
Subject: Re: Scary, high voltage power supplies. (7Kv, 50A, 50ns, 20Khz)
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Date: Mon, 11 Nov 2002 03:30:52 GMT
NNTP-Posting-Date: Mon, 11 Nov 2002 03:30:52 GMT
Organization: AT&T Worldnet
I am working with a 500KV, 60,000 Marx bank driving a di water bluemlien
pulse forming network...
goes off like a cannon! I am making wide band, calibrated e, b filed
sensors for this machine.
I have just stripped an old Jetta (VW) for the HV coil to make a spark that
triggers the Marx bank erection. We had used some "contrapcation" from the
labs.. The auto spark drive is actually way smaller, uses less lab support
gear, and produces less radiated energy. This is important is the overall
dynamic analysis range is limited by the "radiated noise floor in and around
We are searching the breakdown regime, and recording data at the 50 pS
sample rate and capturing 5 uS worth of the set-up, charge and fire event.
We operate in one mode, separated by a serpentine maze of "x-ray" block
(hunk of solid concrete bricks) piled 8 foot high, completely surrounding
In another mode, the adjoining room is evacuated, monitored with interlocks
and live cameras, warning light, and operated remotely.
The best part is electromagnetically tossing disks, for the visiting kids
"John Woodgate" wrote in message
> 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
> >years in heavy industry, seeing with my own eyes more than one poor
> >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
> 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.
> Regards, John Woodgate, OOO - Own Opinions Only.
> Interested in professional sound reinforcement and distribution? Then go
> PLEASE do NOT copy news posts to me by E-MAIL!