The Working Principle of the DC Motor

Principle: the working principle of any motor is based on electromagnetic induction and electromagnetic force. In order to discuss the working principle of the DC motor, we simplify the complex DC motor structure as the working principle diagram.

The working principle of the DC motor

1. working principle: when a conductor moves in a magnetic field, a potential E is induced in a conductor.


B: magnetic density

L: conductor length;

V: the relative velocity of a conductor to a magnetic field.

Positive direction: judge by the rule of the right hand. The positive direction of the potential E indicates the direction of the potential rise, which is opposite to the U. If e and U are in the same direction on the same element, e= -U.

For more information, please feel free to contact

Share article
Previous News
The Advantage and Disadvantage of DC Motor
Next News
Application of Fiber Optic Gyroscopes in Drilling and Drill Inclinometers-1