[Scilab-users] Variable Capacitor

[Tim Wescott]

It depends on what you're simulating -- if it's an RLC circuit and the
cap value is changing slowly with respect to the resonant frequency,
for example, then that's not so big a deal.  Ditto if you're using a
variable cap block to model a Varicap diode (which isn't going to act
like a mechanical capacitor whose plates are moving in and out).

But yes, if you're modeling a real live phenomenon with conductors
moving in relation to each other, and if it's in a broadband circuit,
then you at least need to worry about conservation of charge.

On Mon, 2017-02-20 at 17:29 +0000, Michael J McCann wrote:
> Just a thought... I don't know about the model component you are
> using but if you change the value of a capacitor while it is charged
> the voltage changes. So choosing the value for a component in a
> circuit is one thing. Dealing with a charged capacitor which changes
> can produce some interesting effects. Conservation of charge and
> energy balance must be considered.
> Mike.
> =======
> 
> On 20/02/2017 16:10, Theo D. wrote:
> > Thank you very much Samuel !
> > 
> > 
> > 
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>  
> -- 
> Dr.M.J.McCann,MJMcCann-Consulting
> 
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Tim Wescott
www.wescottdesign.com
Control & Communications systems, circuit & software design.
Phone: 503.631.7815
Cell:  503.349.8432