3.22 V: Independent Voltage Source

3.22.1 Syntax

Device

Vxxxxxxx n+ n– value
Vxxxxxxx n+ n– expression
Vxxxxxxx n+ n– GENERATOR scale
.vsource label n+ n– expression

Model (optional)

.model mname TABLE {args}

3.22.2 Purpose

Independent voltage source.

3.22.3 Comments

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

All of the SPICE time dependent functions (pulse, sin, exp, pwl, and sffm are supported. An additional function generator emulates a laboratory type function generator, for a more convenient signal input to the circuit. See the chapter “Behavioral modeling” for more information.

You may specify the value in any of these forms:

1. A simple value. This is the DC voltage.
   
   
2. An expression, as described in the behavioral modeling chapter. The expression can specify the voltage as a function of time.
   
   
3. A model, as described in the behavioral modeling chapter. The table model describes a table of voltage vs. time.
   
   
4. The keyword generator which specifies a time dependent waveform set by the generator command for transient analysis, or a swept voltage for AC analysis.

3.22.4 Probes

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