Motors and Drives: DC Motor--Advantages and Disadvantages
Part 3 of the Motors and Drives Series details the advantages, disadvantages, and different components that make up a standard dc motor.
DC (Brush) [System Overview ]
Advantage - High Torque, easy speed (change the voltage) and torque control (just limit current)
Disadvantage – Expensive to produce, physically larger, high maintenance(brushes)
Typical 20:1 speed range