LMETER - Inductance Meter (Single-Ended IO)

Model Kind

General

Model Sub-Kind

Generic Editor

SPICE Prefix

A

Model Name

LMETER

SPICE Netlist Template Format

@DESIGNATOR %1 %2 @"DESIGNATOR"LMETER
.MODEL @"DESIGNATOR"LMETER lmeter (?gain|gain=@gain|)

Parameters (definable at component level)

The following component-level parameters are definable for this model type and are listed on the Parameters tab of the Sim Model dialog. To access this dialog, simply double-click on the entry for the simulation model link in the Models region of the Component Properties dialog.

Notes

This is a sensing device which is attached to a node in the circuit and produces as an output, a scaled value equal to the total inductance seen on its input, multiplied by the value assigned to the Gain parameter. This model is useful as a building block for other models, which require to sense an inductance value and adjust their behavior with respect to it.

The input signal can be either a single-ended current or single-ended voltage signal.

Examples

Consider the inductance meter in the above image, with the following characteristics:

• Pin1 (input) is connected to net NetL1_2
• Pin2 (output) is connected to net Out
• Designator is U1
• Gain = 10

The entry in the SPICE netlist would be:

*Schematic Netlist:
AU1 NetL1_2 OUT AU1LMETER
.MODEL AU1LMETER lmeter (gain=10)

The effect of the function can be seen in the resultant waveforms obtained by running a transient analysis of the circuit.

In this example, the following analysis parameters on the Transient/Fourier Analysis page of the Analyses Setup dialog have been used:

• Transient Start Time - set to 0.000
• Transient Stop Time - set to 60.00u
• Transient Step Time - set to 2.000u
• Transient Max Step Time - set to 2.000u