Sense amplifier, diode bridge and switch means providing clamped, noise-free, unipolar output

Claim 1

A GATED AMPLIFIER COMPRISING SIGNAL AMPLIFIER MEANS CONNECTED TO RECEIVE INPUT SIGNALS AND PROVIDE A DIFFERENTIAL OUTPUT SIGNAL, MEANS INCLUDING A REFERENCE VOLTAGE AND ENERGY STORAGE CONNECTED TO THE SIGNAL AMPLIFIER, MEANS FOR BIASING THE SIGNAL AMPLIFIER MEANS TO BE SLIGHTLY CONDUCTING, A BRIDGE CIRCUIT CONNECTED ACROSS THE SIGNAL AMPLIFIER MEANS TO RECEIVE THE DIFFERENTIAL SIGNAL AT DIAMETRICALLY OPPOSITE ENDS OF THE BRIDGE, AN OUTPUT CIRCUIT, AND SWITCHING MEANS IN ONE DIRECTION CONNECTING THE BRIDGE CIRCUIT TO THE OUTPUT CIRCUIT SO THAT THE REFERENCE VOLTAGE WILL BE CLAMPED TO THE OUTPUT CIRCUIT REGARDLESS OF THE INPUT SIGNAL MAGNITUDE AND IN THE OTHER CONDITION CONNECTING THE BRIDGE CIRCUIT TO THE OUTPUT CIRCUIT SO THAT OUTPUT SIGNALS OF ONLY ONE POLARITY APPEAR THEREIN, SAID OUTPUT SIGNALS BEING MAINTAINED AT THE REFERENCE VOLTAGE BY THE ENERGY STORAGE MEANS.