The Nodeset device is used to specify the starting voltage for a node. The Nodeset device helps the program find the DC or initial transient solution by making a preliminary pass with the specified node held to the given voltage. After the preliminary pass the restriction is released and the iterations continue to the true bias solution. The Nodeset device may be necessary for convergence on bistable or a-stable circuits. In general, this device should not be necessary.

The Nodeset device is effective for the bias point (both small-signal and transient bias points) and for the first step of the DC sweep. It has no effect during the rest of the DC sweep, nor during a transient analysis.

Unlike the .IC (initial bias point condition) device, the Nodeset device provides only an initial guess for some initial values. It does not clamp those nodes to the specified voltages.


Parameter Description Units
Value Initial amplitude of the node voltage. Volts