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commutator |
Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia | 0.06 sec. |
commutatorDevice 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 contact to an external circuit is provided by carbon or metal brushes. |
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Dudley wanted to show me the commutator on the exhaust-box or the windscreen, or something, and he was just bending over when Eustace jumped out from nowhere and pinned him. |
commutator
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