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Saturable reactor
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[[Image:Magnetic amplifier.svg|frame|right|In concept, the alternating current through the lamp L can be controlled by the saturation of the iron core with the direct current, regulated by variable resistor R. B- battery, G β AC source.]] A '''saturable reactor''' in [[electrical engineering]] is a special form of [[inductor]] where the [[magnetic core]] can be deliberately [[saturation (magnetic)|saturated]] by a [[direct current|direct electric current]] in a control winding. Once saturated, the [[inductance]] of the saturable reactor drops dramatically.<ref>{{harvnb|Choudhury|2005|loc=Section 2.9.1}}</ref> This decreases inductive reactance and allows increased flow of the [[alternating current]] (AC).
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