@cmartinez
to make the sim run, put a new 1megΩ resistor from the minus end of V1 to Gnd∇. In any Spice, all parts of a circuit must have an Ohmic connection to ∇. The opto makes it such that the stuff to the left is "floating". To check if isolation is working, plot the current through the new resistor...
Your circuit needs a little work. I will post one in a few minutes...
to make the sim run, put a new 1megΩ resistor from the minus end of V1 to Gnd∇. In any Spice, all parts of a circuit must have an Ohmic connection to ∇. The opto makes it such that the stuff to the left is "floating". To check if isolation is working, plot the current through the new resistor...
Your circuit needs a little work. I will post one in a few minutes...