> >so E = Q * V = C * V^2...
>
> Whoa! That's not quite right, you're off by a factor of 2.
> ...(hint, I posted this a week ago)...but, so here's the *real* derivation...
>
> E = 1/2 * C * V^2 ; where V is voltage across cap at the steady state.
The energy/work needed to charge a cap is dependent on how it is charged.
(see numerous papers on minimizing energy consumption in digital circuits.)
In any case, it's the order of magnitude, not the prepended constant that's
important... :)
Received on Mon Dec 20 13:53:22 1999
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