Swing angle sensor of translucent material for an actuator for operating an armature has a disk to rotate on bearings with a torque-proof link to a drive shaft and circular concentric paths

摘要

Each path has a light-sensitive element impinged with a source of light through a disk so as to rely on light intensity picked up for generating an output signal. On a base plate (BP) (10) there is a board (12) separated from the BP by spacers (11). Alongside devices (13-16) for converting voltage and processing signals, the board has a hole in the center, through which a drive shaft (3) passes.