Many applications using miniature brushed DC motors require motors to operate at more than one load point or through specific load cycles. Running a motor at usable load points requires a variable ...

The graph above charts the load current versus terminal voltage of an ideal brushed DC motor used as a generator. When motor terminals are not connected, UT equals Ui, and current does not flow ...

[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 ...