com·mu·ta·tor

(kŏm′yə-tā′tər)

1. A cylindrical arrangement of insulated metal bars connected to the coils of a direct-current electric motor or generator, providing a unidirectional current from the generator or a reversal of current into the coils of the motor.

2. Mathematics In a commutative or noncommutative group, an element of the form ghg^-1h^-1 where g and h are elements of the group. If g and h commute, the commutator is the identity element.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

commutator

(ˈkɒmjʊˌteɪtə)

1. (Electronics) a device used to reverse the direction of flow of an electric current

2. (Electrical Engineering) the segmented metal cylinder or disc mounted on the armature shaft of an electric motor, generator, etc, used to make electrical contact with the rotating coils and ensure unidirectional current flow

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

com•mu•ta•tor

(ˈkɒm yəˌteɪ tər)

n.

a. a device for reversing the direction of a current.

b. (in a DC motor or generator) a ring or disk assembly that works to change the frequency or direction of current in the armature windings.

2. Math. the element equal to the product of two given elements in a group multiplied on the right by the product of the inverses of the elements.

[1830–40]

ThesaurusAntonymsRelated WordsSynonymsLegend:

Noun

commutator - switch for reversing the direction of an electric current

electric switch, electrical switch, switch - control consisting of a mechanical or electrical or electronic device for making or breaking or changing the connections in a circuit

Translations

commutatore

коммутатор коммутаторный

commutator

n (Elec) → Kommutator m

Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007

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References in periodicals archive

The Hamiltonian [H.sub.osc] is recovered from the anticommutator

Higher-Spin Symmetries and Deformed Schrodinger Algebra in Conformai Mechanics

One then finds that the transformation of the matter field [PHI] gives a 'field strength' contribution from the anticommutator of the two factors Q + [PSI], which is cancelled against the variation of the Chern-Simons term.

Pure spinor superfields, with application to D = 3 conformal models/Puhtad spiinor-supervaljad ja nende rakendused D = 3 konformsetes mudelites

A Jordan C*-subalgebra of a C*-algebra, endowed with the anticommutator product, is called a JC*-algebra.

Linear *-derivations on C*-algebras

where one has decomposed the Field strength components into a symmetric plus antisymmetric piece by simply writing the Clifford geometric product of two polyvectors [E.sup.M] [E.sup.N] as the sum of an anticommutator plus a commutator piece respectively,

The extended relativity theory in Clifford spaces