A new line of hollow shaft resolvers, also known as absolute shaft angle transducers, can be used to monitor motor shaft position. Suitable for most hostile environments, they can be used in military and aerospace applications, industrial machinery, robotics, factor automation, process controls, and medical instrumentation.

The resolver consists of a stationary stator and a movable rotor. It operates like two transformers: one supplies the rotor with power while the second transformer determines the motor shaft angle. A resolver to digital (R/D) converter is used to process the output signals of these two transformers, both in the form of sine and cosine waves, into absolute motor shaft angle data.