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.op Line

General Form:
.op
The inclusion of this line in an input file will force WRspice to determine the dc operating point of the circuit with inductors shorted and capacitors opened. This is done automatically prior to most other analyses, to determine the operating point of the circuit, yielding transient initial conditions or the linearized models for nonlinear devices for small-signal analysis. It will not be done in transient analysis if the uic keyword is given in the transient analysis specification, or if Josephson junctions are present in the circuit.

WRspice performs a dc operating point analysis if no other analyses are requested, and there are no Josephson junctions in the circuit.

In interactive mode, the op command can be used to compute the operating point.

In operating point analysis, any .save or save directives will be ignored. All node voltages and branch currents will be saved in an "op" plot in interactive mode.



Stephen R. Whiteley 2006-10-23