Bipolar electric motor From Wikipedia, the free encyclopedia Jump to: navigation, search Bipolar toy motor of 1948. Note the three-pole rotor with a bipolar field This article is about the continuously-rotating DC motor. For the Stepper motor wiring configuration, see Stepper motor#Bipolar motor.

A bipolar electric motor is an electric motor with only two (hence bi-) poles to its stationary field.[1] They are an example of the simple brushed DC motor, with a commutator. This field may be generated by either a permanent magnet or a field coil.

The 'bipolar' term refers to the stationary field of the motor, not the rotor.[1] The rotors often have more than two poles, three for a simple motor and potentially more for a high-power motor. A two-pole rotor has the disadvantage that it is not self-starting in all positions and so requires to be flicked to start.

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