Documentation

Single-Phase Two-Way Switch

Single-pole double-throw switch

Library

Switches & Breakers / Fundamental Components

Description

The Single-Phase Two-Way Switch block models a single-pole double-throw switch that uses an external signal to connect the port 1 to either of two ports 2 or 3 via internal resistance.

The table shows how the external signal vT controls the block behavior.

ConditionBlock BehaviorResistance Parameter Used
vT ThresholdPort 1 is connected to port 2 via internal resistance. Port 3 is unconnected.Open conductance (port 1 to port 3).Closed resistance (port 1 to port 2)
vT > ThresholdPort 1 is connected to port 3 via internal resistance. Port 2 is unconnected.Open conductance (port 1 to port 2).Closed resistance (port 1 to port 3)

Parameters

Closed resistance

Resistance between ports 1 and 3 when the switch is closed. The default value is 0.001 Ohm.

Open conductance

Conductance between ports 1 and 2 when the switch is open. The default value is 1e-6 1/Ohm.

Threshold

Threshold voltage for the control port vT. When the voltage is above the threshold, the switch is closed. The default value is 0 V.

Ports

The block has the following ports:

1

Electrical conserving port

2

Electrical conserving port

3

Electrical conserving port

vT

Scalar control port, which is either a physical signal or an electrical port.

Introduced in R2013b

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