The model here presented derives from the
standard model[1], with some minor differences. By
comparing the model in Fig. 1 and in Fig.2, it can
noted that:
1. the capacitance is eliminated, since its
effects on model behavior is negligible.
2. the two resistances in parallel with the
inductances are replaced by one resistance
R (about 1 M:) between the input
terminals, with the only scope to avoid
numerical troubles.
The operating principle is quite similar to that of
the IEEE frequency-dependent mode