This Post is about Stepper Motors and its different types..

v      Stepper Motor

A motor that devides a full rotation into a number of equal steps is called stepper motor. This is how a stepper motor looks like..

                                                        

v      Parts of A Stepper Motor:

                                                               

v      Types of Stepper Motor:

                                                                                    There are four types of stepper motor:

Ø Permanent Magnet Stepper

                                                                

Ø Hybird Synchronous Stepper

                                                                   

Ø Variable reluctance stepper

                                                                     

Ø Lavet type stepping motor

                                                      

Difference between an ordinary motor and a stepper motor:

There are four major differences:

1-      Stepper motors have no brushes. Wether brushes are the rotating parts of other DC motors.

2-      In A stepper motor ,permanent magnets are inside and rotate(rotor) while coils are outside and stay static(stator).

3-      Third difference is the difference in it’s construction. Stepper motor has inner magnet devided into many sections which looks like teeth. Outer coils have corresponding teeth that provide magnetic impulse and making the teeth of inner wheel rotate by small steps.

4-      Stepper motor posses holding torque .i.e. it has ability to stay still after a certain movement.

Below is shown 

Stepper motor 

      

DC motor