using two similar electronic devices, such as matched valves, made to operate 180° out of phase with each other. The outputs are combined to produce a signal that replicates the input waveform
a push-pull amplifier
push-pull in American English
(ˈpʊʃˈpʊl)
adjective
Electronics
designating or of an amplifier circuit in which two tubes or transistors operate 180° out of phase with each other, usually producing a higher output of the desired wave and canceling undesired qualities, as hum