Wayne Parham Messages: 18787 Registered: January 2001
Illuminati (33rd Degree)
There are evaluation versions that are free, and the links in the post above have this free software. The evaluation versions of Spice are limited only in the number of nodes, and these circuits are simple enough that the node limitation is higher than the parts count of the circuit. So for this case, the evaluation version(s) of Spice will do everything you need.