Definition of Commutator

1. Noun. Switch for reversing the direction of an electric current.

Generic synonyms: Electric Switch, Electrical Switch, Switch
Derivative terms: Commutate

Definition of Commutator

1. n. A piece of apparatus used for reversing the direction of an electrical current; an attachment to certain electrical machines, by means of which alternating currents are made to be continuous or to have the same direction.

Definition of Commutator

1. Noun. an electrical switch, in a generator or motor, that periodically reverses the direction of an electric current ¹

2. Noun. (mathematics) (''of a group'') an element of the form ''ghg?1h?1'' where ''g'' and ''h'' are elements of the group; it is equal to the group's identity if and only if ''g'' and ''h'' commute ¹

3. Noun. (mathematics) (''of a ring'') an element of the form ''ab-ba'', where ''a'' and ''b'' are elements of the ring, it is identical to the ring's zero element if and only if ''a'' and ''b'' commute ¹

¹ Source:

Definition of Commutator

1. [n -S]

Lexicographical Neighbors of Commutator

commutation ticket
commutative algebra
commutative group
commutative justice
commutator (current term)
commutator length
commutator lengths
commutator subgroup
commutator subgroups
commuter belt
commuter marriage
commuter rail
commuter traffic
commuter train

Literary usage of Commutator

Below you will find example usage of this term as found in modern and/or classical literature:

1. Dyke's Automobile and Gasoline Engine Encyclopedia by Andrew Lee Dyke (1920)
"commutator and brush troubles. Copper ¡i totter than mica and wears more rapidly, ... commutator WIDTH OF commutator Fig. 5. Method of smoothing down a ..."

2. Transactions of the American Institute of Electrical Engineers by American Institute of Electrical Engineers (1920)
"By AIEE NOTES ON THE SYNCHRONOUS commutator BY JB WHITEHEAD Professor of Electrical Engineering, Johns Hopkins University AND T. ISSHIKI Engineer, ..."

3. Proceedings of the American Philosophical Society Held at Philadelphia for by American Philosophical Society (1907)
"Theorem I. If a commutator is commutative with one of its elements the order of the commutator divides the order of this element. Theorem II. ..."

4. Electrical Review (1891)
"As shown before, the requisite quality of the commutator is that it presents a uniform, smooth, and clean surface moving with moderate peripheral speed, ..."

5. Principles of Direct-current Machines by Alexander Suss Langsdorf (1919)
"This can be accomplished in the manner indicated in Fig. 83, where each element has four active edges. 70. Winding Pitch, commutator Pitch and Slot Pitch. ..."

6. International Library of Technology: A Series of Textbooks for Persons by International Textbook Company (1905)
"THE commutator 95. The commutator is the most sensitive part of a machine ... Under no circumstances should any weight be allowed to rest on the commutator, ..."

7. Electrical Engineering: The Theory and Characteristics of Electrical by Clarence Victor Christie (1917)
"commutator.—The commutator is one of the most important parts of a direct-current ... commutator. a cast-iron spider from which they are insulated by ..."

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