- a device for reversing the direction of a current.
- (in a DC motor or generator) a cylindrical ring or disk assembly of conducting members, individually insulated in a supporting structure with an exposed surface for contact with current-collecting brushes and mounted on the armature shaft, for changing the frequency or direction of the current in the armature windings.
Origin of commutator
Examples from the Web for commutator
Historical Examples of commutator
The brushes should be lifted from the commutator while this is being done.
Brushes which bear on the commutator lead to the charging circuit.
To these arms the brushes are attached, so that their spring ends engage with the commutator .Electricity for Boys
J. S. Zerbe
A commutator, B, permits of establishing or interrupting the current at will.
The Commutator is in two parts, which must be insulated from each other.How Two Boys Made Their Own Electrical Apparatus
Thomas M. (Thomas Matthew) St. John
1839, agent noun in Latin form from Latin commutare (see commute (v.)).