3.10 Voltage Controlled Resistor
3.10.1 Syntax
Preferred syntax:
.VCR label n+ n– nc+ nc– expression
Alternate syntax:
Gxxxxxxx n+ n– VCR nc+ nc– expression
3.10.2 Purpose
Voltage controlled resistor.
3.10.3 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.