What is a resolver?

A resolver is an electrical transformer used to measure the angle of rotation. Many resolvers look somewhat like an electric motor comprising of copper windings on the stator and a machined metal rotor.

Types of resolver

There are a variety of types of resolver:

·         Brushless resolver

·         Slab resolver

·         Pancake resolver

·         Receiver resolver

·         Differential resolver.

Resolvers have an established reputation for accuracy and reliability and are often the automatic choice for safety related applications. The use of copper windings and metal elements means that resolvers are robust, but also heavy, bulky and expensive.