Thread Subject: Create a varistor

I want to use a varistor for my electrical circuit. A
varistor is a variable resistance using for over-voltage,
so it depends on a voltage signal.

How can I introduce a voltage of a device of my circuit as
a signal for the Variable Resistance?

Thanks

"Diego " <diegokanta@yahoo.es> wrote in message <g64hqo$ch4
$1@fred.mathworks.com>...
> I want to use a varistor for my electrical circuit. A
> varistor is a variable resistance using for over-
voltage,
> so it depends on a voltage signal.
>
> How can I introduce a voltage of a device of my circuit
as
> a signal for the Variable Resistance?
>
> Thanks

well, it depends... how are you modeling your circuit?
just in a script in matlab or in simulink?

Diego wrote on 22-Jul-08 04:55 :
> I want to use a varistor for my electrical circuit. A
> varistor is a variable resistance using for over-voltage,
> so it depends on a voltage signal.
>
> How can I introduce a voltage of a device of my circuit as
> a signal for the Variable Resistance?

Vout = f(v)

> Thanks

you're welcome.

"D. Ismay" <!@a.com> wrote in message <6YadnT-Zw7IqYBrVnZ2dnUVZ_o3inZ2d@earthlink.com>...
> Diego wrote on 22-Jul-08 04:55 :
> > I want to use a varistor for my electrical circuit. A
> > varistor is a variable resistance using for over-voltage,
> > so it depends on a voltage signal.
> >
> > How can I introduce a voltage of a device of my circuit as
> > a signal for the Variable Resistance?
>
> Vout = f(v)
>
> > Thanks
>
> you're welcome.


Hi,
sorry for reactivating this post, but I have the same issue. I had to design a varistor but I don't understand your answer Vout= f(v).
I can meassure a voltage, and I have a variable Resistor. But how can I modify the value of the Resistor depending of the voltage.

Thanks.