Magnetic Hall Effect Sensors
Magnetic Hall effect sensors are widely used for detecting magnetic fields in a non-contact, reliable manner. These sensors convert the presence of a magnetic field into a measurable electrical signal, enabling diverse applications across industrial, automotive, and consumer electronics sectors.
What is a Magnetic Hall Effect Sensor?
A magnetic Hall effect sensor operates based on the Hall effect principle, detecting changes in magnetic field strength. When exposed to a magnetic field perpendicular to the sensor surface, a voltage is generated across the sensor's terminals. This voltage is proportional to the magnetic field strength.
Diagram of a typical magnetic Hall effect sensor detecting a magnetic field
Common Applications
- Magnetic field detection in automation systems
- Speed sensing in brushless motors
- Position sensing in robotics
- Magnetic encoders for contactless rotary measurements
- Magnetic switches in smartphones and laptops
Related Sensor Types
Working Principle
The magnetic field induces a Lorentz force on the charge carriers in a conductor. This results in a voltage differential across the width of the sensor, which is known as the Hall voltage. This voltage is used to measure the field's strength and direction.
Example Sensors & Components
- A1302 Hall Effect Sensor – Analog output sensor for magnetic field detection
- 49E Hall Effect Sensor – Popular general-purpose magnetic sensor
