3.25  Y: Admittance

3.25.1  Syntax


Yxxxxxxx n+ n– value
Yxxxxxxx n+ n– expression
.admittance label n+ n– expression

Model (optional)

.model mname TABLE {args}

3.25.2  Purpose

Admittance, or general voltage controlled dissipative element.


N+ and n– are the positive and negative element nodes, respectively. Value is the admittance in Mhos.

The resistor (type R) differs from the admittance (type Y) in that the resistor is a current controlled element, and the conductance is a voltage controlled element, in addition to the obvious use of conductance (1/R) instead of resistance.

You may specify the value in one of three forms:
  1. A simple value. This is the admittance in Mhos.

  2. An expression, as described in the behavioral modeling chapter. The expression can specify the current as a function of voltage, or the admittance as a function of time.

  3. A model, as described in the behavioral modeling chapter. The table model describes a table of current vs. voltage.

3.25.4  Probes

The standard probes for all basic elements are all available. See the print command for documentation.