Device for the successive amplification of a number of low voltages

Claim 1

A DEVICE FOR THE SUCCESSIVE AMPLIFICATION OF A PLURALITY OF LOW VOLTAGES BY MEANS OF A CORRESPONDING NUMBER OF PRE-AMPLIFIERS AND A SYMMETRICAL COMMON LOAD AND OUTPUT CIRCUT COUPLED TO THE INPUT TERMINALS OF A COMMON AMPLIFIER, THE PRE-AMPLIFIERS BEING SUCCESSIVELY AND PERIODICALLY RENDERED OPERATIVE UNDER CONTROL OF A DISTRIBUTOR, EACH PRE-AMPLIFIER INCLUDING A PAIR OF PUSH-PULL CONNECTED TRANSISTORS OF THE SAME CONDUCTIVITY TYPE, THE EMITTER CIRCUITS OF WHICH COMPRISES A COMMON RESISTOR OF COMPARATIVELY HIGH VALUE WITH RESPECT TO THE INTERNAL EMITTER RESISTANCE OF EACH TRANSISTOR, AND THE COLLECTOR ELECTRODES OF WHICH ARE COUPLED THROUGH SAID SYMMETRICAL LOAD CIRCUIT TO A VOLTAGE SOURCE REVERSELY BIASING SAID COLLECTOR ELECTRODES, SAID DISTRIBUTOR COMPRISING A PLURALITY OF SWITCH TRANSISTORS CORRESPONDING TO THE PLURALITY OF VOLTAGES TO BE AMPLIFIED, MEANS FO RENDERING SAID SWITCH TRANSISTORS SUCCESSIVELY AND PERIODICALLY CONDUCTIVE, THE EMITTER-COLLECTOR PATH OF EACH SWITCH TRANSISTOR BEING CONNECTED BETWEEN THE COMMON EMITTER CIRCUIT OF THE CORRESPONDING PRE-AMPLIFIER STATE AND A SUPPLY OF FORWARD VOLTAGE, AND A COMPENSATING TRANSISTOR OF THE SAME CONDUCTIVITY TYPE AS THE PRE-AMPLIFIER TRANSISTORS, THE EMITTER OF THE COMPENSATING TRANSISTOR BEING CONNECTED TO A POINT OF CONSTANT POTENTIAL, ITS COLLECTOR BEING CONNECTED TO A CENTER TAP OF SAID COMMON LOAD CIRCUIT AND SAID SUPPLY SOURCE THROUGH A COMEPNSATING RESISTOR, AND ITS BASE BEING COUPLED TO ONE OF THE TERMINALS OF THE LOAD CIRCUIT, WHEREBY VOLTAGE PEAKS OF THE SAME POLARITY SET UP ACROSS THE TWO HALVES OF THE SYMMETRICAL LOAD CIRCUIT WHEN A PRE-AMPLIFIER IS SWITCHED OFF AND THE NEXTFOLLOWING PRE-AMPLIFIER IS SWITCHED ON ARE AT LEAST PARTIALLY COMPENSATED BY THE VOLTAGE DROP PRODUCED ACROSS SAID COMPENATING RESISTOR BY THE CORRESPONDING PEAKS OF THE COLLECTOR CURRENT OF SAID TRANSISTOR.

Claim 2

A DEVICE FOR THE SUCCESSIVE AMPLIFICATION OF A PLURALITY OF LOW VOLTAGES BY MEANS OF A CORRESPONDING NUMBER OF PRE-AMPLIFIERS AND A SYMMETRICAL COMMON LOAD AND OUTPUT CIRCUT COUPLED TO THE INPUT TERMINALS OF A COMMON AMPLIFIER, THE PRE-AMPLIFIERS BEING SUCCESSIVELY AND PERIODICALLY RENDERED OPERATIVE UNDER CONTROL OF A DISTRIBUTOR, EACH PRE-AMPLIFIER INCLUDING A PAIR OF PUSH-PULL CONNECTED TRANSISTORS OF THE SAME CONDUCTIVITY TYPE, THE EMITTER CIRCUITS OF WHICH COMPRISES A COMMON RESISTOR OF COMPARATIVELY HIGH VALUE WITH RESPECT TO THE INTERNAL EMITTER RESISTANCE OF EACH TRANSISTOR, AND THE COLLECTOR ELECTRODES OF WHICH ARE COUPLED THROUGH SAID SYMMETRICAL LOAD CIRCUIT TO A VOLTAGE SOURCE REVERSELY BIASING SAID COLLECTOR ELECTRODES, SAID DISTRIBUTOR COMPRISING A PLURALITY OF SWITCH TRANSISTORS CORRESPONDING TO THE PLURALITY OF VOLTAGES TO BE AMPLIFIED, MEANS FO RENDERING SAID SWITCH TRANSISTORS SUCCESSIVELY AND PERIODICALLY CONDUCTIVE, THE EMITTER-COLLECTOR PATH OF EACH SWITCH TRANSISTOR BEING CONNECTED BETWEEN THE COMMON EMITTER CIRCUIT OF THE CORRESPONDING PRE-AMPLIFIER STATE AND A SUPPLY OF FORWARD VOLTAGE, AND A COMPENSATING TRANSISTOR OF THE SAME CONDUCTIVITY TYPE AS THE PRE-AMPLIFIER TRANSISTORS, THE EMITTER OF THE COMPENSATING TRANSISTOR BEING CONNECTED TO A POINT OF CONSTANT POTENTIAL, ITS COLLECTOR BEING CONNECTED TO A CENTER TAP OF SAID COMMON LOAD CIRCUIT AND SAID SUPPLY SOURCE THROUGH A COMEPNSATING RESISTOR, AND ITS BASE BEING COUPLED TO ONE OF THE TERMINALS OF THE LOAD CIRCUIT, WHEREBY VOLTAGE PEAKS OF THE SAME POLARITY SET UP ACROSS THE TWO HALVES OF THE SYMMETRICAL LOAD CIRCUIT WHEN A PRE-AMPLIFIER IS SWITCHED OFF AND THE NEXTFOLLOWING PRE-AMPLIFIER IS SWITCHED ON ARE AT LEAST PARTIALLY COMPENSATED BY THE VOLTAGE DROP PRODUCED ACROSS SAID COMPENATING RESISTOR BY THE CORRESPONDING PEAKS OF THE COLLECTOR CURRENT OF SAID TRANSISTOR.