Encyclopedia of Electronic Components Volume 1

Chapter 25. stepper motor

electromagnetism > rotational > stepper motor

Also often referred to as a stepping motor, and sometimes known as a step motor. It is a type of induction motor but merits its own entry in this encyclopedia as it has acquired significant and unique importance in electronics equipment where precise positioning of a moving part is needed and digital control is available.

Other related components

• DC motor (See Chapter 22)
• AC motor (See Chapter 23)
• servo motor (See Chapter 24)

What It Does

A stepper motor rotates its drive shaft in precise steps in response to a timed sequence of pulses (usually one step per pulse). The pulses are delivered to a series of coils or windings in the stator, which is the stationary section of the ...