Re: Ohm's Law

[Bernard Cleyet <anngeorg@PACBELL.NET>]

of course caps are nonlinear both extrinsically and contingently.  One
type is used to tune high freq. oscillators (they are voltage
dependent.)  All caps with a dielectric saturate (like inductors with a
permeable core).

bc

P.s. e.g. http://www.ucop.edu/research/micro/97_98/97_001.pdf   and

http://pcb.cadence.com/Technical/Library/Schematic/ContentPage/tn/tn88.htm
and here's a fun article:

http://www.eurotraining.net/ESSCIRC_2001/essderc_2001/data/39.pdf



Ludwik Kowalski wrote:

> OOPS, Q=V*C. Like I=S*V, where S=1/R=conductance.
> Capacity <---> Conductance ?
>
> Ludwik Kowalski wrote (now corrected):
>
> > How does Ohm's law, I=V*S, differ from the Q=V*C law?
> > Note that C, like S, depends only on geometry, and on the
> > medium (epsilon, not rho). Since epsilon is likely to depend
> > of conditions, such as pressure or temperature I would not
> > be surprised by a "nonlinear capacitor." Does it exist?
> >
> > To emphasize the analogy one can say that Q stands for the
> > flux of field lines linking two parallel plates. Field lines in
> > a capacitor versus the current density lines in a wire.
> > Ludwik Kowalski