Open Circuit

Electrical port terminator that draws no current


Electrical Elements


The Open Circuit block represents an electrical terminal that draws no current. Physical network block diagrams do not allow unconnected conserving ports. Use this block to terminate electrical ports on other blocks that you want to leave open circuit.

You can also use this block to set the initial absolute voltage at a node.

The Variables tab lets you set the priority and initial target value for the Voltage variable prior to simulation. For more information, see Set Priority and Initial Target for Block Variables.


The block has one electrical conserving port.

Introduced in R2012b

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