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" ... wide band of frequencies, they are used to provide direct-current isolation, signal splitting and combining functions, specific current or voltage ratios, impedance matching, and phase inversion. The Institute of Electrical and Electronics Engineers,... "
Power Transformers: Principles and Applications - Page 1
by John Winders - 2002 - 304 pages
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The New York City Blackout of July 13, 1977: Hearing Before the Subcommittee ...

United States. Congress. House. Committee on Interstate and Foreign Commerce. Subcommittee on Energy and Power - Electric power failures - 1978 - 247 pages
...MVA (short-time emergency) . A transformer is a device consisting of a winding with tap or taps, and two or more coupled windings, with or without a magnetic core, for inducing mutual coupling between electric circuits. A phase-angle regulating transformer or phase-shifter is a special transformer application....
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Reference Data for Engineers: Radio, Electronics, Computers and Communications

Mac E. Van Valkenburg - Technology & Engineering - 2002 - 1672 pages
...Institute of Electrical and Electronics Engineers, Inc. (IEEE) has defined a transformer as follows: "A static device consisting of a winding, or two or...coupled windings, with or without a magnetic core, for introducing mutual coupling between circuits. Note: Transformers are extensively used in electric power...
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