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Electrical Circuit in Electrostatic Simulation

Posted Dec 21, 2011, 9:50 a.m. EST Low-Frequency Electromagnetics, Parameters, Variables, & Functions, Studies & Solvers Version 4.2a 7 Replies

Thomas Schlegl
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Hello!

Is it possible to have a electrical circuit problem connected with an electrostatics problem?
For example I want to connect a capacitor with a certain value to my electrostatics simulation.
If yes, how do I connect them, when my Terminal BC is defined in the electrostatics?

Thank you for your help...

Thomas
7 Replies Last Post Jul 7, 2013, 5:21 a.m. EDT
accelerate
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Posted: 1 decade ago Dec 21, 2011, 11:50 a.m. EST
I got the same problem, I saw a paper mentioned using extrusion coupling and assmblies to do that.

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learn COMSOL, like COMSOL
I got the same problem, I saw a paper mentioned using extrusion coupling and assmblies to do that. -- learn COMSOL, like COMSOL
Bhavin Pandya
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Posted: 1 decade ago Apr 11, 2012, 2:22 p.m. EDT
Hi Thomas,

Did you find a solution to the problem that you mentioned in this post. I am facing the same problem. I have a pressure sensor model which I want to couple to a front end circuit. Is there any way I could do that?

I appreciate your help.

Bhavin
Hi Thomas, Did you find a solution to the problem that you mentioned in this post. I am facing the same problem. I have a pressure sensor model which I want to couple to a front end circuit. Is there any way I could do that? I appreciate your help. Bhavin
Thomas Schlegl
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Posted: 1 decade ago Apr 12, 2012, 1:06 a.m. EDT
Hello!

I am sorry, but I could not solve this problem (with comsol).
Perhaps anyone else?

Thomas
Hello! I am sorry, but I could not solve this problem (with comsol). Perhaps anyone else? Thomas
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago Apr 12, 2012, 2:28 a.m. EDT
Hi

is it something like this you want to do ? I'm using the initial value on the circuit capacitor to discharge the capa into the COMSOL model

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Good luck
Ivar
Hi is it something like this you want to do ? I'm using the initial value on the circuit capacitor to discharge the capa into the COMSOL model -- Good luck Ivar

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Thomas Schlegl
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Posted: 1 decade ago Apr 13, 2012, 3:42 a.m. EDT
Hello!

Thank you for the fast answer. It is similar to what I was lookin for, but I don't understand it completley.
What happens with the init-value of the capa?
The simulation acts like one would switch on 10V even if it says 10V init value?
For example, how do I get a real init value for the capa?

Thanks again for your answers...

Thomas!
Hello! Thank you for the fast answer. It is similar to what I was lookin for, but I don't understand it completley. What happens with the init-value of the capa? The simulation acts like one would switch on 10V even if it says 10V init value? For example, how do I get a real init value for the capa? Thanks again for your answers... Thomas!
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago Apr 13, 2012, 11:37 a.m. EDT
Hi

my capa is very large compared to the one in the model, if you put a one pf capa the voltage should drop, test it out ;)

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Good luck
Ivar
Hi my capa is very large compared to the one in the model, if you put a one pf capa the voltage should drop, test it out ;) -- Good luck Ivar
Vito Di Virgilio
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Posted: 1 decade ago Jul 7, 2013, 5:21 a.m. EDT
Hello everybody.


I have a quite similar problem, I would like to charge a capacitor with a current source of 25mA and compliance of 70V. So when the capa is charged, the voltage drops to 0. How can I simulate this using the CIR module?

Have a nice day!
Hello everybody. I have a quite similar problem, I would like to charge a capacitor with a current source of 25mA and compliance of 70V. So when the capa is charged, the voltage drops to 0. How can I simulate this using the CIR module? Have a nice day!

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