DC motors are most commonly used in variable speed and torque applications.

Motor controllers receive supply voltages and provide signals to motor drives that are interfaced to motors.

AC motors include single, multiphase, universal, induction, synchronous, and gear motors.

Gearmotors consist of an AC or DC motor with an integral gearbox or gear head that steps delivered speed up or down

Stepper motors use a magnetic field to move a rotor in small angular steps or fractions of steps.

DC servomotors are generally small and powerful for their size, and easy to control.

Motor starters and contactors are motor-starting devices.