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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]
DC abbreviation of "direct current," an electric current that flows in one direction. (Cf. "AC.")
diode a semiconductor used to convert alternating current to direct current; rectifier. [1/2 definitions]
dynamo a machine for generating electricity, esp. direct current, from a different source of power. [1/3 definitions]
dynamotor an electric machine that transforms direct current into alternating current.
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.
Josephson junction an electronic device, used for high-speed switches in computers, that allows direct current to pass from one superconductor to another through a thin insulating barrier, by means of a radiating effect.
rectifier an electrical device, such as a vacuum tube, that converts alternating current to direct current. [1/2 definitions]
rectify to convert (alternating electrical current) into direct current. [1/4 definitions]
thyristor any of several electronic devices, esp. a silicon-controlled rectifier, that convert alternating current to direct current.