Discharging CRT anode and capacitors on a VT52 DECscope

From: Scott Stevens <sastevens_at_earthlink.net>
Date: Sat May 29 22:46:54 2004

On Fri, 28 May 2004 12:02:29 -0700
Tom Jennings <tomj_at_wps.com> wrote:

> > >Probably as much POWER as a nine-volt battery or two. If it had
> > >much more, it would have been an unsafe display, as it's S.K.O.P.
> > >(*) to either not see, or ignore, or spite, safety warnings, and
> > >kid science museums certainly know that!
> On Thu, 2004-05-27 at 15:53, Dwight K. Elvey wrote:
> > There is quite enough energy in a normal 9 volt battery to
> > kill a person. It might need a little conversion but
> > the total amount of energy stored there is quite large.
> > I would suspect that there is several times less energy in\
> YES yes yes... but you have to admit this argument is a bit
> pedantic.My point was casual, and I imagine the list of people
> murdered with 9V radio batteries is rather short.
Years back I worked at a medical device company and our main product ran
on 9v batteries. We ended up having a big box of half-used batteries
lying around.

One boring day I got clever and decided to daisy chain a bunch of them
together. I had about a hundred of them all snapped together in series
then I hooked leads up to the end terminal. When I brought the leads
close, it arced over in a very flameful fashion. I think I remember the
leads actually catching on fire.

What an idiot I was. 900 volts with an amp or more of current capacity
behind it is extremely dangerous.

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Received on Sat May 29 2004 - 22:46:54 BST

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