Definition of commutator in English:


Syllabification: com·mu·ta·tor
Pronunciation: /ˈkämyəˌtātər


  • 1An attachment, connected to the armature of a motor or generator, through which electrical connection is made and which ensures that the current flows as direct current.
    More example sentences
    • It may also increase efficiency of machines as there won't be frictional effects of brushes, commutators, etc, on the motor itself.
    • He went on to build an electric motor in 1832 and invented the commutator, an integral part of most modern electric motors.
    • One of the places you need them is in modern small motors which don't have a commutator.
  • 1.1A device for reversing the direction of flow of electric current.
    More example sentences
    • The commutator must switch current to the correct drive magnets in the correct direction at the correct time in order to produce desired rotor movement.
    • Note how the commutator reverses the current each time the coil turns halfway.

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elaborate ornamentation of a vocal melody