> Try the Op-Amp with Limited Output instead.
Yes, then it oscillates… but delivers a square wave. VM2 is a 10V square wave too: it appears the clipping network with R6 and the two diodes does nothing. Putting a resistor of 1000 Ohms between the opamp output and the feedback network (C1||C2||C3) decreases the amplitude of VM2, but it never becomes a sine shape (as it does in SPICE when I replace the BJT with an ideal opamp and the 1N914 diodes with a PWL diode model (500mV Vfwd, 100 Ohm Ron).
I guess I should not expect these analog non-linear circuits to work in PLECS.
[edit: added d_ideal2.sub and sosc2.sp for the SPICE limiter]
sosc.plecs (15.2 KB)
d_ideal2.sub (353 Bytes)
sosc2.sp (438 Bytes)