Hall sensor
part · 1879 · Electric age
Measures a magnetic field using the Hall effect; the compass in a smartphone.
Principles and materials it uses
- Magnetism — uses. It responds to a magnetic field.
- Semiconductor — is made of. The sensor is a semiconductor plate.
- Electron — uses. The magnetic field deflects the electrons.
Where it is used
- Smartphone — is part of. A magnetometer compass.
- Anti-lock braking system (ABS) — is part of. Sensors measure the wheel speed.
What it is a kind of
- Sensor — is a kind of. A field sensor.
Things built in a similar way
- Compass — works like. Both sense the Earth’s magnetic field.