Use MultiSim to simulate varistor

[TOO]

I would like to use MultiSim to simulate the varistor, can it simulate the varistor?

[lacy]

I am not sure what you mean by varistor. In my mind when I hear that term I think of MOV's. Is this what you are referring to?

[TOO]

Please review the datasheet.

[lacy]

There was a reason I asked the preivous question. In my version I already have MOV's in the database. They are listed as Voltage_Suppressors under the Misc Menu. If you are looking to simulate using other components, then the best way is to tie two zeners back to back. This will give the best results. Other than that I have no other ideas.

[limo]

Put a Schottky diode instead of varistor - thus you can simulate clamping properties of varistor.

[とんちき]

he doesn't know what veristor is, but thinks of a MOV's when hears it. im assuming he knows nothing about both. and voltage supressors are under power menu just so u know.

[dbur]

 A varistor is a voltage dependent variable resistor, of which a MOV is one type.

A crude way to simulate is back to back zener diodes for bi-directional or a single zener for unidirectional.  If you need more precise simulation then you should first check for a model from the manufacturer for the actual part you are using.  If a SPICE model is not available then you need the V-I curves and any other parametric specs important to your circuit.  There are various ways in SPICE to create the model and I'm sure many examples can be found with an internet search.

Look through the MS Master Database Power/Voltage_suppressor and Diode/Protection_Diode libraries for many examples as well.

[SitioParaisoCE]

Poderia me mandar um convite para eu poder me cadastrar no KITTMASTER´S?

Fico muito agradecido.

[tipa]

Привет! Две модели варисторов есть в основной базе, но, можно сделать модели с помощью синтаксиса spice

 

 

[tipa]

-ещё один пример нелинейного варистора (1 Вольт делим на ток датчика, получаем изменение сопротивления противофазно изменению напряжения на входе элемента; 169,-169 Ом)