Resistive Load

The Resistive Load subcircuit models a constant resistive load. This load includes probes which output graphs for the load voltage and current.

In DVM, this subcircuit is used by a number of built in test objectives. When used in DVM, the resistance value can be set directly using the Res() function or can be automatically calculated from the output voltage using the IRes() function.

In this topic:

DVM Information

Power Supply (Non-DVM) Information

Model Name

Resistive Load

Simulator

This device is compatible with both the SIMetrix and SIMPLIS simulators.

Parts Selector
Menu Location

DVM > Loads > DVM Output Load - 2 Terminal
DVM > Loads > DVM Output Load - 3 Terminal
DVM > Loads > DVM Output Load - 4 Terminal

Power Supply Loads > Power Supply Load ( DC Current, Pulse, Bode, Zout... )

Symbol Library

SIMPLIS_DVM_ADVANCED.sxslb

power_supply_source_and_loads.sxslb

Model File

SIMPLIS_DVM_ADVANCED.lb

power_supply_source_and_loads.lb

Subcircuit Name

SIMPLIS_DVM_ADVANCED_LOAD_2T_RES
SIMPLIS_DVM_ADVANCED_LOAD_3T_RES
SIMPLIS_DVM_ADVANCED_LOAD_4T_RES

POWER_SUPPLY_LOAD_RES

Symbols

Schematic - 2 Terminal

Note: Power Supply probes will not have the "DVM" prefix.

Schematic - 3 Terminal

Note: Power Supply probes will not have the "DVM" prefix.

Schematic - 4 Terminal

Note: Power Supply probes will not have the "DVM" prefix.

Parameters

The following table explains the parameters used in the Resistive Load.

Parameter Name	Default	Data Type	Range	Units	Parameter Description
LOAD_NAME	LOAD	String	n/a	n/a	Name of the DVM load. This name cannot contain spaces.
LOAD_RESISTANCE	2.00667	Real	Min: 0	Ω	Sets the load resistance of the load.

DVM Testplan Entry

To set any managed DVM load to a Resistive Load subcircuit, place a Res() or IRes() testplan entry in the Load column.

The Res() testplan entry sets the load resistance directly. The IRes() testplan entry calculates the load resistance from a given current, nominal output voltage, and the load line resistance. The syntax for the two testplan entries are explained in the table below.

Res(REF, LOAD_RESISTANCE)
IRes(REF, CURRENT)

Argument	Range	Description
REF	n/a	The actual reference designator of the DVM load or the more generic syntax of OUTPUT:`n` where `n` is an integer indicating a position in the list of DVM loads.
LOAD_RESISTANCE	min: 0	The actual, numerical resistance value for the load. No interpretation of symbolic values is made on the provided numeric value.
CURRENT	min: 0	The DC Current for the load. The LOAD_RESISTANCE parameter is calculated from the nominal output voltage, load line resistance, and the provided CURRENT. The load is modeled as a resistance.

Converting between DVM and Power Supply Loads

To change a Power Supply load to a DVM load, right click the symbol to bring up the context menu, and select the menu option: Upgrade to DVM Source/Load

To change a DVM load to a Power Supply load, right click the symbol to bring up the context menu, and select the menu option: Downgrade to SIMetrix/SIMPLIS Source/Load