Abstract: A full-wave rectifier is disclosed for rectifying low level A.C. input signals. In the disclosed embodiment, the rectifier includes first and second differential amplifiers, each constructed of a pair of transistors. One transistor in each pair of transistors has a D.C. operating point offset from that of the other transistor so that the offset transistor conducts only on an excursion of a given polarity of a received A.C. input signal. Both output currents of the offset transistors are coupled to a load, across which a fully-rectified version of the A.C. input signal is developed.

Abstract: In a television receiver, an automatic peaking control circuit is responsive to an automatic gain control signal to lower the peak frequency response of the video amplifier when the received television signal is so weak that much of its high frequency content is noise.