commutator

[n] - switch for reversing the direction of an electric current
Found on http://www.webdictionary.co.uk/definition.php?query=commutator

Commutator

Com'mu·ta`tor noun (Electricity) 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.
Found on http://www.encyclo.co.uk/webster/C/119

commutator

noun switch for reversing the direction of an electric current
Found on http://wordnetweb.princeton.edu/perl/webwn?s=commutator

Commutator

• (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.
Found on http://thinkexist.com/dictionary/meaning/commutator/

commutator

(from the article `electric generator`) ...or armature, windings are placed in slots in the cylindrical iron rotor. A simplified machine with only one rotor coil is shown in Figure 6. The ...
Found on http://www.britannica.com/eb/a-z/c/120

Commutator

mechanical device in a brushed DC motor that passes current from the brushes to the windings.
Found on http://www.empiremagnetics.com/glossary/glossary.htm#A

commutator

an assembly of conducting members insulated from one another and from their supports, against which the brushes are maintained, enabling current to flow between a rotating winding and a generally stationary part of a circuit by sliding contact and also enabling commutation between the particular coils of the rotating winding
Found on http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=411-41-13

commutator

an assembly of conducting members insulated from one another and from their supports, against which the brushes are maintained and used to enable commutation of current between a moving winding and the stationary part of a circuit by sliding contact
Found on http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=811-14-15

Commutator

The part of a DC motor armature that causes the electrical current to be switched to various armature windings. Properly sequenced switching creates the motor torque. The commutator also provides the means to transmit the electrical current to the moving armature through the brushes that ride on the commutator.
Found on http://www.electricmotorwarehouse.com/Glossary.htm

commutator

commutator, device used in an electric generator to convert the alternating current produced in the generator into direct current before the current is sent into an external circuit; it is basically a rotary switching device synchronized with the frequency of the alternating current. Commutators are...
Found on http://www.infoplease.com/ce6/sci/A0813078.html

Commutator

A commutator is a piece of apparatus used in connection with many electrical instruments for reversing the current from the battery, without the necessity of changing the arrangement of the conductors from the poles.
Found on http://www.probertencyclopaedia.com/browse/GC.HTM

commutator

Device in a DC (direct-current) electric motor that reverses the current flowing in the armature coils as the armature rotates. A DC generator, or dynamo, uses a commutator to convert the AC (alternating current) generated in the armature coils into DC. A commutator consists of opposite pairs of conductors insulated from one another, and contac...
Found on http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0016333.html

Commutator

The rotating part of a DC generator.
Found on http://www.otherpower.com/glossary.html

Commutator

[electric] A commutator is the moving part of a rotary electrical switch in certain types of electric motors or electrical generators that periodically reverse the current direction between the rotor and the external circuit. Commutators have two or more softer metallic brushes in contact with them to complete the other half of the switch.
Found on http://en.wikipedia.org/wiki/Commutator_(electric)

Commutator

In mathematics, the commutator gives an indication of the extent to which a certain binary operation fails to be commutative. There are different definitions used in group theory and ring theory. == Group theory == The commutator of two elements, g and h, of a group G, is the element == See also == == Notes == ...
Found on http://en.wikipedia.org/wiki/Commutator

Commutator

A cylindrical device mounted on the armature shaft and consisting of a number of wedge-shaped copper
Found on http://www.superglossary.com/Glossary/Technology/Motors/
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