Device that converts an alternating (A/C) current of a certain voltage to an alternating current of different voltage, without change of frequency, by electromagnetic induction. A 'step up' transformer receives a low voltage and converts into a higher voltage, and a 'step down' transformer does just the reverse.

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  • Making sure that you have a good transformer can help save you time and money from certain electrical problems that may have happened otherwise.

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  • I wanted to go see that new Transformer movie because I was a big fan of the actor that was in the leading role of the film.

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  • A transformer converting voltage outside caught on fire and the power went out in all the nearby houses in the neighborhood.

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