A commutator is an essential component found in certain types of DC (Direct Current) motors and generators. It plays a crucial role in reversing the direction of the electrical current in the coils of the motor, enabling the continuous rotation of the rotor or armature. The commutator is typically a split, cylindrical conductor made of segments or bars, often constructed from copper. Each segment is insulated from the others and attached to the ends of the coil windings. As the rotor spins, the brushes, which are in contact with the commutator, transfer electric current to the coil windings. When the rotor changes direction, the commutator reverses the polarity of the current in the coil, ensuring that the magnetic field generated by the coil continues to interact with the permanent magnets, resulting in a continuous rotational motion. Commutators are crucial for the operation of many types of DC motors, such as brushed motors, and they need to be well-maintained to ensure smooth and efficient motor performance.

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