DC Current Source

Constant current source

• 

Libraries:
Simscape / Electrical / Additional Components / SPICE Sources

Description

The DC Current Source block represents a constant current source whose output current value is independent of the voltage across its terminals.

The block uses a small conductance internally to prevent numerical simulation issues. The conductance connects the + and - ports of the device and has a conductance GMIN:

• By default, GMIN matches the GMIN parameter of the Environment Parameters block, whose default value is 1e–12.

• To change GMIN, add an Environment Parameters block to your model and set the GMIN parameter to the desired value.

Ports

Conserving

+ — Positive voltage

electrical

Electrical conserving port associated with the DC current source positive voltage

- — Negative voltage

electrical

Electrical conserving port associated with the DC current source negative voltage

Parameters

Constant value, DC — DC output current

0 A (default)

Value of the DC output current, in A.

Include parallel conductance, GMIN — Whether to include parallel conductance

Yes (default) | No

Specify if the current source includes a parallel conductance. The value of the parallel conductance, GMIN, depends on whether your model contains an Environment Parameters block.

This table shows the possible values of the parallel conductance, GMIN:

Values of parallel conductance, GMIN

Include parallel conductance, GMIN
Yes		No
Model contains Environment Parameters block	Model does not contain Environment Parameters block	Parallel conductance, GMIN, is not included and it does not affect the current source.
GMIN is equal to the value of the GMIN parameter in the Environment Parameters block.	GMIN = 1e-12 Ohm

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using Simulink® Coder™.

Version History

Introduced in R2008a