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" Standards, a transformer is an electric device, without continuously moving parts, which by electromagnetic induction transforms electric energy from one or more circuits to one or more other circuits at the same frequency, usually with changed values... "
Power Transformers: Principles and Applications - Page 1
by John Winders - 2002 - 304 pages
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Reference Data for Engineers: Radio, Electronics, Computers and Communications

Mac E. Van Valkenburg - Technology & Engineering - 2002 - 1672 pages
...magnetic core, for introducing mutual coupling between circuits. Note: Transformers are extensively used in electric power systems to transfer power by...frequency, usually with changed values of voltage and current.'"1 Magnetic-core inductors and reactors are static devices containing one or more windings...
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The Human Computer: Get the Most Out of Yours!

Anthony Scheiber - Computers - 2002 - 440 pages
...parts, which by electromagnetic induction transforms electric energy from one circuit to another circuit at the same frequency, usually with changed values of voltage and current (amperes). transistor an active semiconductor device with three or more electrodes, usually a base,...
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