Since this is my first post here, I would like thank you so much for making Qspice available for free.
Now to my question: I’ve been playing around with Ø-Devices and trying to set the output impedance (instance parameter ROUT), which works, except for setting it to zero, which seems to do nothing. I have to set it to 1e-308, which is probably good enough, but being able to set it to actual zero would be nicer.
The output is going to be a Norton equivalent circuit. It’s impedance can not be zero. QSPICE is trying to be polite by ignoring a request to set it to zero.
Norton equivalents are always preferred in circuit simulation because of the way the rest of the circuit is represented.
Thanks for the explanation!
Would it make sense, if Qspice internally round ROUT to the minimal supported value, when user sets ROUT=0?
Setting it to the minimum supported value or printing a warning would probably be more user-friendly than just quietly ignoring it.
At 0°K all molecular activity stops, using numbers below this may be science, but not engineering.