Hall-effect magetic encoders principle.！

Most Hall-effect magnetic encoders use a wheel attached to the motor shaft to be tracked, and that wheel is magnetized with north and south poles around its perimeter. It is usually made from an injection-molded ferrite embedded with the pole array.

To illustrate,magnetic encoders a 15-mm encoder contains a 7.6-mm-diameter wheel, magnetized with 32 poles (16 north and 16 south) using a static fixture. Fixture size typically limits the number of poles that can be embedded. Magnetic encoders the pole pitch for a 32-pole motor is about 0.75 mm, the smallest practical size a fixture can handle.

Consider a common setup using a target magnet disc plus three digital Hall-effect sensors (120° electrical apart) on a circuit that pick up commutation signals from the wheel. The magnetic encoders Hall effect sensors turn switch when north and south poles pass.

Previous：Roundss MPG Enable Switch Optional Manual pulse generator 3m spiral line DC12V Voltage Ouput
Next：CNC 5-Axis Machine Tool Manual DC 12 Volts Encoder Handwheel Controller