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AC1 abbreviation of "alternating current," electrical current that reverses direction at regular intervals. (Cf. "DC.")
commutate to reverse the direction of (alternating current) to create direct current.
converter an electrical device that converts alternating current into direct current or vice versa. [1/5 definitions]
diode a semiconductor used to convert alternating current to direct current; rectifier. [1/2 definitions]
dynamotor an electric machine that transforms direct current into alternating current.
impedance a measure of the total resistance of an electric circuit to an alternating current flow, usu. expressed in ohms.
induction coil a transformer for converting an interrupted low-voltage direct current to an intermittent high-voltage alternating current, as in some automotive ignitions.
inverter that which inverts or converts to an opposite, esp. an electric converter for transforming direct current into alternating current.
magnetic amplifier a tubeless amplifier that employs two sets of windings, a primary set into which input feeds and a secondary set through which flows an alternating current, whose variations are modified by those in the primary winding.
reactance in electronics, one of several measurable components of the total resistance in a circuit to the flow of alternating current.
rectifier an electrical device, such as a vacuum tube, that converts alternating current to direct current. [1/2 definitions]
thyristor any of several electronic devices, esp. a silicon-controlled rectifier, that convert alternating current to direct current.