Torque motor
signal converter, in which an electromagnetic armature moves in the magnetic field of two permanent magnets ( Figure T 14 ). If one side is activated, the magnet rotates in this field, which is transferred
Solenoid
signal converters used to actuate valves are often referred to as solenoids. These are not permanent magnets, but are electromagnets. An electrical input signal (voltage or current) generates, via the magnetic
Velocity measurement
measurement is provided by using an inductive sensor. It comprises a coil around which there are rod magnets (Figure G 9 c) . If magnetic material is moved past a pole on the magnet, there is a change in the