A stepper motor is an electromechanical device which converts electrical pulses into
discrete mechanical movements.

This motor is designed for small accurate movements. Each rotation is divided into steps. The rotation angle of the motor is proportional to the input pulse.

There are basically three types of stepping motors variable reluctance, permanent magnet and hybrid. They differ in terms of construction based on the use of permanent magnets and/or iron rotors with laminated steel stators.

A Variable Reluctance stepper motor depends upon magnetic flux having the lowest reluctance path through a magnetic circuit.

The Permanent magnet stepper has a cylindrical permanent magnet rotor.

The hybrid stepper has soft steel teeth added to the permanent magnet rotor for a smaller step angle.

Stepper Motor Applications

Clocks & Watches.

Floppy Disks.

Type Writer.

Nuclear Reactors.

Radiation Therapy and X ray machines.

Stepper Motor Electronic Circuits Links: