9 Jun
2009
9 Jun
'09
9:09 p.m.
Dave McGuire wrote:
Yes. I used to work on TVs a lot when I was a kid;
I'd dig dead
ones out of dumpsters and (sometimes) fix and sell them. I got two or
three good jolts from CRTs before I figured out what was going on. I
never did quite understand how it happened, though...do you know the
physics behind it?
I have always thought that there was some residual charge in the
body of
the capacitor. It would take some time for all of it to migrate to the
electrodes after the main charge on the electrodes was first removed. I
assume the time it takes to fully discharge a large capacitor is the
reason we are told to hold a computer's power button down for 15 or 30
sec before opening it up to work on it.
--
Dick Hadsell 203-992-6320 Fax: 203-992-6001
Reply-to: hadsell at blueskystudios.com
Blue Sky Studios http://www.blueskystudios.com
1 American Lane, Greenwich, CT 06831-2560