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Negative Supply Rail

Ideal negative supply rail

  • Negative Supply Rail block

Simscape / Electrical / Sources


The Negative Supply Rail block represents an ideal negative supply rail. Use this block instead of the Simscape™DC Voltage Source block to define the output voltage relative to the SimscapeElectrical Reference block that must appear in each model.


Do not attach more than one Negative Supply Rail block to any connected line.



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Electrical conserving port associated to the negative supply rail negative voltage.


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The voltage at the output port relative to the Electrical Reference block ground port.

Extended Capabilities

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

Version History

Introduced in R2008a