DC motor
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A DC motor is an electrical motor that uses direct current to produce mechanical force. The most common types rely on magnetic forces produced by currents in the coils. Nearly all types of DC motors h
The Pennsylvania Railroad's class DD1 locomotive running gear was a semi-permanently coupled pairing of third rail direct current electric locomotive motors built for the railroad's initial New York-area electrification when steam locomotives were banned in the city (locomotive cab removed here).
Brushed DC electric motor
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A brushed DC electric motor is an internally commutated electric motor designed to be run from a direct current power source and utilizing an electric brush for contact.
The inside of a very small DC motor as would be found in a toy
Dynamo commutating plane definitions