# Hall-effect current sensor

Canonical URL: https://eloragrid.ai/symbols/hall-effect-current-sensor
Publisher: Elora Grid
Updated: 2026-10-27
Lookup label: HALL I
Drawing use: Schematic
Reference families: Manufacturer

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

## 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.

### 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.

### 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.

### Terms

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

Concept diagram: Current-generated magnetic field → Hall sensing element → Current-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.

- [Hall-effect current-sensing example](https://www.ti.com/product/TMCS1100)


## What it represents

A Hall-effect current sensor uses a magnetic-field response to measure current.
An appropriately selected sensor can report current in a battery or power-conversion circuit.
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. This is original functional artwork, not a certified standard graphic or device pinout.

## How to read it

- Show the current path and positive measurement direction.
- Identify signal supply, reference and output type.
- Reference the selected sensor’s current and insulation specifications.
- Hall sensing and a conventional AC current transformer have different operating principles and limits.

## Information to show or 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.

## Important distinction

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

## Facts

- Representation type: Original functional block; not a certified IEC or IEEE graphic
- Concept input: Current-generated magnetic field
- Concept output: Current-related output

## Public references

- [Hall-effect current-sensing example](https://www.ti.com/product/TMCS1100) — Texas Instruments. Primary-source technical context for this particular function; product-specific ratings remain with the manufacturer.

## Graphic scope

Independent original educational concept illustration by Elora Grid. Not a certified standards graphic or manufacturer footprint. Unitless; not to scale. Original artwork licence: https://creativecommons.org/licenses/by/4.0/. Publisher material is linked only.