Phasor is a phase vector representing a sine wave. Phasor may also be: Phasor (sound synthesizer), a stereo music, sound and speech synthesizer for the Apple II computer Phasor measurement unit, a device that measures phasors on an electricity grid Phasor (radio broadcasting), a network of inductors and capacitors used to control the relative amplitude and phase of the radio frequency currents driving a directional antenna array. See also Phase (disambiguation) Phaser (disambiguation) FASOR (disambiguation)