And dc motors respond quickly to changes in control signals due to their high ratio of torque to inertia. Motor types: Wound-field dc motors are usually classified by shunt-wound, series-wound ...

Common terms you will hear discussed with DC motors include commutator, brushes, counter electromotive force (EMF), torque, speed regulation, and speed-torque characteristic curves.

[Frank Herrmann] had an interesting idea to turn a geared DC motor into a servo motor assembly, but with a stepper motor-like interface. By stacking some small PCBs behind the motor body, it was ...