The DC gear motor concept of a brushed servo motor may be a little counter-intuitive-most of us believe that as a high-performance device, the servo motor is used in high dynamic applications, while the brushed DC motor is a kind of The low-cost application solution produced by others. And, to a large extent, this is correct. However, please remember that the servo motor is a very broad concept. It is any kind of motor with feedback that uses a closed loop system.
Permanent precision cycloidal gearbox magnet DC motors are mechanically commutated, and their carbon brushes carry current to the windings.his is the opposite of a brushless DC motor-a type typically used in the servo field-which uses electronic commutation instead of mechanical commutation.