magnetic amplifier

magnetic amplifier
noun
: a device in which an alternating current in the secondary is modulated by variations of core reluctance due to varying a direct current in the primary so that the secondary modulations may be of much greater amplitude than the primary and thus make the device an amplifier

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Elect.
an amplifier that applies the input signal to a primary winding and feeds an alternating current to a secondary winding where this current is modulated by the variations in the primary winding.

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magnetic amplifier,
a device consisting of two wires wound around an iron core, used to control large amounts of electric power, such as the speed of large motors or the brightness of airport runway lights; saturable reactor.

Useful english dictionary. 2012.

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