Symbols · HALL I

Hall-effect current sensor

In plain English

What does Hall-effect current sensor mean?

A Hall-effect current sensor uses a magnetic-field response to measure current.

A simple example

An appropriately selected sensor can report current in a battery or power-conversion circuit.

Current-generated magnetic fieldHall sensing elementCurrent-related output
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

Identify the current-carrying conductor and the sensor’s signal output separately. Hall sensing uses the conductor’s magnetic field to obtain current information. Unlike a conventional AC current transformer, a suitable Hall-based sensor can be selected for measurements involving DC; its actual range and isolation remain product-specific.

Hall effect
A material response to magnetic field used by the selected sensing element.
Measurement direction
The convention defining a positive current reading.

Before using this reference

  • Show the current path and positive measurement direction.
  • Identify signal supply, reference and output type.
  • Reference the selected sensor’s current and insulation specifications.
Is a Hall sensor just another AC current transformer?

No. The sensing principle differs. A conventional current transformer and a Hall-based sensor have different capabilities and limitations, so their interfaces and operating conditions must be checked separately.

Read the source: Hall-effect current-sensing example

Schematic · HALL IHall-effect current sensor: original educational illustration
Original educational illustrationNot to scale · See source and graphic notes

A distinction that matters

Hall sensing and a conventional AC current transformer have different operating principles and limits.

Sources you can follow

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

Hall-effect current-sensing example

Primary-source technical context for this particular function; product-specific ratings remain with the manufacturer.

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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