DC Current Source
R2026bIdeal constant current source
DC Current Source block
To add a block to a model, double-click the canvas and start typing the block name. Then, select the block from the list.
Libraries:
Simscape /
Foundation Library /
Electrical /
Electrical Sources
Description
The DC Current Source block represents an ideal current source that is powerful enough to maintain specified current through it regardless of the voltage across the source.
You specify the output current by using the Constant current parameter, which can be positive or negative.
The positive direction of the current flow is indicated by the arrow.
Examples
Ultracapacitor Energy Storage with Custom Component
Use the Simscape™ example library Capacitors_lib. The model is constructed using components from the example library. The circuit charges an ultracapacitor from a constant 0.05 amp current source, and then delivers a pulse of current to a load. The ultracapacitor enables a much higher current to be delivered than is possible directly from the current source. The library contains capacitor models with different levels of fidelity to allow exploration of the effect of losses and nonlinearity.
Ports
Conserving
Parameters
Programmatic Use: Add Block
To add the block programmatically, use the add_block function with one of these library block paths as the source.
"fl_lib/Electrical/Electrical Sources/DC Current Source"
Example: add_block("fl_lib/Electrical/Electrical Sources/DC Current Source","myModel/myBlock",MakeNameUnique="on")
For information about programmatic access to individual block parameters, see the Programmatic Use section of parameter descriptions on this page.
Extended Capabilities
Version History
Introduced in R2007a
