VECTORLIST - The Mailing List For The Technical Discussion of Vector-Based Arcade Games

December_1999
Re: Bad monitor discharge instructions


From: Anders Knudsen ( )
Date: Mon Dec 20 1999 - 10:06:44 CST


At 10:27 PM 12/19/99 -0800, you wrote:
>For anyone that remembers the formula (or can find it) for the amount of
>current stored in a capacitor, I measured a 13 inch picture tube on
>Saturday and came up with a value of 0.001 (102). This was between the
>anode cap and the chassis that it was mounted in. The tube was not
>connected to anything else.
>
> So @ 20KV what are we talking about? I left my Nomographs sitting on the
> filing cabinet.. somewheres...

Capacitors store charge (potential) not current.
The current in a capacitor is only there during charge/discharge times.
Once it's reached steady state, the current is zero. To calculate current
use the simple differential equation:

I = C dv/dt

-anders.


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