dynamo

views updated May 09 2018

dynamo (generator) Device that converts mechanical energy into electrical energy by the principle of electromagnetic induction that uses magnetism to produce an electric current. In a simple dynamo, a conductor, usually an open coil of wire (armature), is placed between the poles of a permanent magnet. This armature is rotated within the magnetic field, inducing an electric current. See also alternator

World Encyclopedia

dynamo

views updated Jun 27 2018

dy·na·mo / ˈdīnəˌmō/ • n. (pl. -mos) a machine for converting mechanical energy into electrical energy; a generator. ∎ inf. an extremely energetic person: she was a dynamo in London politics.

The Oxford Pocket Dictionary of Current English

dynamo

views updated May 17 2018

dynamo XIX. short for dynamo-(electric-) machine, f. Gr. dúnamis force (see DYNAMIC); for the comb. form see -O-.

The Concise Oxford Dictionary of English Etymology T. F. HOAD

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Dynamo

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