DC electric motors use direct current electricity as their source of power. As one of the earliest motor designs, many people can quickly grasp how one works. This can be advantageous to you if you work on the motor. However, DC motors can be larger than other motor types and require extensive maintenance.
The three types of DC motors are brush, brushless, and uncommutated motors. Brush DC motors use fixed magnets, commutation, and rotating electrical magnets to create torque. Brush electric motors are prized for their easily controlled speed and low starting cost. However, maintenance fees can quickly erode savings. The brushes and springs within the DC motor may require regular replacement depending on the amount of times you use the motor.
Brushless DC motors use a rotating magnet and stationary electrical magnets. The design is simpler than brush motors, but there is a higher initial cost. Brushless motors also require far less maintenance and are more efficient.
Uncommutated motors, such as the homopolar motor or ball-bearing motor, do not require commutation. Homopolar motors have limited applications because the voltage is restricted. Ball-bearing motors use a flywheel, two ball-bearing assemblies, and a shaft to produce movement. To learn more about DC motors and other motor types, browse Business.com and click on the provided links.