Brush DC PM motor technology continues to be used in a wide variety of applications because it is a simple and inexpensive way to implement a motion system. Despite the pundits who said brushless would replace Brush DC PM technology, wholesale, Brush DC PM motors are very much in demand and the motor technology of choice in many applications. Why pay for performance you don't need? Coreless versions and Piezo motors, an interesting variation on mechanical commutation, will be examined.
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