The equivalent of an additional electrical circuit or wire, in reality not existing, obtained by certain arrangements of real circuits, as in some multiplex telegraph systems.

plural of phantom circuit

plural of integrated circuit

plural of circuit breaker

An electric circuit.

(electrical) A group of alternating current circuits having two or more interrelated voltages, usually of equal amplitudes, phase differences, and periods, etc; if a neutral conductor exists, the voltages referenced to the neutral are equal in amplitude and phase; the most common version is that of 3-phase, equal in amplitude with phases 120 degrees apart.

(baseball) The National League, the older of Major League Baseball's two leagues.

(baseball) The American League, the younger of Major League Baseball's two leagues.

(electronics) A switching circuit whose output is determined solely by some combination of its concurrent inputs.

(electricity) An electrical switch capable of opening and closing an electrical circuit in all operating conditions, including fault situations.