On Thu, 28 Apr 2011 11:22:03 -0700, Jim Thompson
wrote:

I'm presuming that an MOV (varistor) can be described with an equation
defining resistance versus voltage?

But I can't locate a site that gives such an equation.

Suggestions?

Thanks!

...Jim Thompson

Here's one:-

http://www.orcad.com/documents/commu...pice/tn28.aspx

Basically just a voltage dependent resistance plus some parasitics-
they don't really have hysteresis.