Low transient linear signal gating circuit

Claim 1

A GATING CIRCUIT COMPRISING: A PAIR OF GATING TUBES EACH HAVING AT LEAST CATHODE, CONTROL GRID AND PLATE ELEMENTS; A PUSH-PULL INPUT CIRCUIT COUPLED TO SAID GATING TUBE CONTROL GRIDS FOR APPLYING AN INPUT SIGNAL TO BE GATED RESPECTIVELY THERETO 180* OUT OF PHASE; A PUSH-PULL SIGNAL OUTPUT CIRCUIT COUPLED TO THE PLATES OF SAID GATING TUBES; A PEDESTAL CANCELLING TUBE HAVING AT LEAST CATHODE, CONTROL GRID AND PLATE ELEMENTS; A GATING SIGNAL CIRCUIT COUPLED TO SAID PEDESTAL CANCELLING TUBE CONTROL GRID FOR APPLYING A GATING SIGNAL THERETO; SAID PEDESTAL CANCELLING TUBE BEING CONDUCTIVE RESPONSIVE TO APPLICATION OF A SAID GATING SIGNAL TO SAID CONTROL GRID THEREOF AND NON-CONDUCTIVE IN THE ABSENCE OF A GATING SIGNAL; A POTENTIOMETER HAVING ITS ENDS RESPECTIVELY CONNECTED TO THE CATHODES OF SAID PAIR OF GATING TUBES AND HAVING ITS SLIDING ELEMENT CONNECTED TO A SOURCE OF NEGATIVE POTENTIAL BY A FIRST RESISTOR; THE CATHODE OF SAID PEDESTAL CANCELLING TUBE BEING CONNECTED TO THE SLIDING ELEMENT OF SAID POTENTIOMETER WHEREBY CONDUCTION OF SAID PEDESTAL CANCELLING TUBE RESPONSIVE TO SAID GATING SIGNAL CAUSES SAID PAIR OF GATING TUBES TO BE CUT-OFF THEREBY GATING-OFF SAID INPUT SIGNAL; SECOND AND THIRD RESISTORS RESPECTIVELY CONNECTING THE PLATE OF SAID PEDESTAL CANCELLING TUBE TO THE PLATES OF SAID PAIR OF GATING TUBES; A FOURTH RESISTOR CONNECTING SAID PLATE OF SAID PEDESTAL CANCELLING TUBE TO A SOURCE OF POSITIVE PLATE POTENTIAL; FIFTH AND SIXTH RESISTORS SERIALLY CONNECTED ACROSS THE PLATES OF SAID PAIR OF GATING TUBES; A SEVENTH RESISTOR CONNECTED BETWEEN THE MIDPOINT BETWEEN SAID FIFTH AND SIXTH RESISTORS AND SAID SOURCE OF POSITIVE POTENTIAL; SAID SECOND THROUGH SEVENTH RESISTORS BEING PROPORTIONED SO THAT THE RESPECTIVE POTENTIALS OF SAID PLATES OF SAID PAIR OF GATING TUBES ARE SUBSTANTIALLY THE SAME WHEN SAID TUBES ARE CONDUCTING WITH SAID PEDESTAL CANCELLING TUBE CUT-OFF, AND WHEN SAID PAIR OF GATING TUBES ARE CUT-OFF WITH SAID PEDESTAL CANCELLING TUBE CONDUCTING WHEREBY A MINIMUM GATING PEDESTAL IS PROVIDED IN SAID OUTPUT SIGNAL; A DIFFERENTIAL AMPLIFIER HAVING A PAIR OF TUBES EACH HAVING AT LEAST CATHODE, CONTROL GRID AND PLATE ELEMENTS; A PUSH-PULL INPUT CIRCUIT COUPLED TO SAID CONTROL GRIDS OF SAID PAIR OF DIFFERENTIAL AMPLIFIER TUBES; AND A PUSH-PULL OUTPUT CIRCUIT COUPLED TO SAID PLATES OF SAID PAIR OF DIFFERENTIAL AMPLIFIER TUBES; SAID DIFFERENTIAL AMPLIFIER INPUT CIRCUIT BEING COUPLED TO SAID PAIR OF GATING TUBES OUTPUT CIRCUIT WHEREBY GATING TRANSIENTS IN SAID OUTPUT SIGNAL ARE SUBSTANTIALLY REDUCED.