Forums » CircuitLab Feature Requests

i havent found a scimatic symbol for a MOV in the build section will this come soon??

I would like to see varistors as well.

Hmmmm,

It's not a nice, simple solution but you can model these using the behavioural voltage source.

The subcircuits and the expressions described in:

http://www.intusoft.com/nl44.htm#Fig4 (The section on Transient Voltage Suppression)

and

http://www.orcad.com/documents/community.an/pspice/tn28.aspx

can be adapted to a little circuit in CL.

Vendor models can be downloaded and read as text files from here:

www.littelfuse.com/varistor-spice-models.html

If adding MOV devices, then addition of a few popular THERMISTORs could also be good. They would need to be programmable for temperature versus resistance. This would let designers do simulations for electronic temperature sensors, electronic temperature compensation circuits, etc.