Symbols · PWR MUX

Power-source multiplexer

In plain English

What does Power-source multiplexer mean?

A power multiplexer selects between defined supply paths feeding an output.

A simple example

A device can transfer between two supported input sources under its selected control rule.

Available supply inputsPower-source selectionCommon load supply
Original functional explanation. Arrows show information or energy roles; two-headed arrows identify two-way interfaces. This is not a pinout, certified standards graphic or complete circuit.

What the drawings help you do

Show every permitted supply input and the common output, together with the source-selection rule. This block switches a power path, whereas a signal multiplexer routes information. Any seamless transfer, reverse blocking or current limits depend on the selected circuit rather than the block name.

Source priority
The rule determining which available supply is selected.
Reverse current
Current flowing opposite to the intended direction in a power path.

Before using this reference

  • Label the candidate supply inputs and common output.
  • Identify the source-priority or selection controls.
  • Reference transfer behaviour and any reverse-current requirements.
Is a power multiplexer the same as a signal multiplexer?

No. Their purposes and electrical duties differ. A power multiplexer manages supplies feeding a load; a signal multiplexer selects information-bearing connections.

Read the source: Power-path protection and selection

Schematic · PWR MUXPower-source multiplexer: original educational illustration
Original educational illustrationNot to scale · See source and graphic notes

A distinction that matters

A power multiplexer switches supply paths; a signal multiplexer switches information paths.

Sources you can follow

These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.

Power-path protection and selection

Power-path protection and selection: public technical context for the named function. Product and compliance details remain with the publisher.

Texas Instruments · Public reference checked 27 October 2026 · Link only

About this graphic

This illustration was authored independently by Elora Grid to explain the concept. It is not reproduced from a customer drawing, an official standard graphic or a manufacturer CAD file. Its correspondence to an exact IEC or IEEE symbol identifier has not been certified.

SVG and DXF downloads contain this original artwork. DXF uses unscaled drawing units; a GA envelope supplies no product dimensions, clearances or fabrication information. Original artwork is available under CC BY 4.0. Third-party references retain their own terms.

Entry JSON · Entry Markdown · Last editorial update: 27 October 2026

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