Rotary Position Sensor Key Parts

- Mar 13, 2020-

The rotary position sensor is composed of three key parts,cover,rotor assembly,and the resistive element as shown in the present figure,the molded housing acts as a dust cover meeting IP40 requirements,The rotor assembly is built with a direct-drive mechanism that consist of the rotor and wiper,the wiper is mechanically driven by rotation of the shaft,the D-slot rotor is designed to provide an anti-slip feature,providing positive mechanical engagement of the shaft.The resistive element uses conductive polymer thick film technology to reduce wear and achieve high cycles life,the terminal pads are part of the resistive element assembly where the centre and top terminals are both connected to the wiper,This feature gives the design engineer greater flexibility when laying out the circuit board