Definition of commutator in English:



  • 1An attachment, connected with the armature of a motor or dynamo, through which electrical connection is made and which ensures the current flows as direct current.

    • ‘One of the places you need them is in modern small motors which don't have a commutator.’
    • ‘The brushes conduct electricity to the commutator.’
    • ‘He went on to build an electric motor in 1832 and invented the commutator, an integral part of most modern electric motors.’
    • ‘You can see that the commutator is simply a pair of plates attached to the axle.’
    • ‘It may also increase efficiency of machines as there won't be frictional effects of brushes, commutators, etc, on the motor itself.’
    1. 1.1 A device for reversing the direction of flow of electric current.
      • ‘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.’