Last time we explained how Alps Alpine uses magnetic sensors for its magnetic switches.
Here we explain the use of magnetic sensors as encoders.

Structure of a Magnetic Sensor Encoder

The basic operating principle is the same as for our magnetic switches in that changes in magnetic fields are converted into electrical resistance. That is then converted into voltage to become digital output in the form of a pulse signal.

2-in-1 Encoder with Variable Magnetic Pole Pitch

Features of Magnetic Sensor Encoders

Alps Alpine's magnetic sensor encoders support variable pitch, which means layout does not have to be changed when changing to a magnet with a different number of poles.
Additionally, because they are always sensing magnetic fields with a 90deg phase difference, sensor layout flexibility is high, allowing greater design freedom.

Here we explained the use of magnetic sensors as encoders. Next time we will look at application of magnetic sensors in angle sensors.