How does a Hall effect sensor work?

Principle: Hall effect sensors operate based on the Hall effect principle, where a voltage difference (Hall voltage) is generated across a semiconductor material when subjected to a magnetic field perpendicular to the current flow.

Semiconductor Material: They typically use a semiconductor material with a current-carrying channel.

Voltage Generation: When a magnetic field is applied perpendicular to the semiconductor channel, it induces a voltage difference perpendicular to both the current flow and the magnetic field direction.

Measurement: This voltage, known as the Hall voltage, is measured across the semiconductor channel to determine characteristics such as the presence, strength, or other properties of the magnetic field.

Output: Hall effect sensors provide output signals, typically analog or digital, proportional to the strength of the magnetic field.

Applications: They are used in various applications, including position sensing, speed sensing, proximity sensing, and current sensing, across industries like automotive, industrial, and electronics.