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Subsections

Voltage Controlled Resistor

Syntax

Preferred syntax:
.VCR label n+ n- nc+ nc- expression
Alternate syntax:
Gxxxxxxx n+ n- VCR nc+ nc- expression

Purpose

Voltage controlled resistor.

Comments

N+ and n- are the positive and negative element (output) nodes, respectively. Nc+ and nc- are the positive and negative controlling nodes, respectively. Value is the transfactor in ohms per volt.

The simulator will faithfully give you a negative resistor if it seems appropriate. Usually, this part is used with a behavioral modeling function, like PWL, which allows you to specify a table of resistance vs. voltage.


Al Davis 2002-03-26