Magnetic Sensor (Resistive Element / MR):
Magnetoresistive (MR) sensors are resistive elements that change resistance in response to an applied magnetic field. Common types include:
- AMR (Anisotropic Magnetoresistance): Moderate sensitivity, used in compasses and position sensing.
- GMR (Giant Magnetoresistance): Higher sensitivity, used in hard drive heads and current sensors.
- TMR (Tunnel Magnetoresistance): Highest sensitivity and signal output, ideal for precision applications.
These sensors offer high reliability, solid-state construction, and are suitable for non-contact position, speed, and current sensing.