High speed turnoff gate driven by a gating means

Claim 1

IN APPARATUS UTILIZINT SOLID STATE SWITCHES FOR PROVIDING HIGH SPACED TURNOFF OF CURRENT TO A LOAD WHILE MAINTAINING LOW LEAKAGE CURRENT THROUGH THE LOAD WHEN THE APPARATUS IS IN AN OFF CONDITION COMPRISING, IN COMBINATION: FIRST TRANSISTOR MEANS INCLUDING BASE, EMITTER AND COLLECTOR MEANS; SECOND TRANSISTOR MEANS INCLUDING BASE, EMITTER AND COLLECTOR MEANS, SAID FIRST TRANSISTOR MEANS BEING OF A DIFFERENT TYPE FROM SAID SECOND TRANSISTOR MEANS, SAID FIRST RANSISTOR MEANS HAVING A LOW LEAKAGE CURRENT AS COMPARED TO SAID SECOND TRANSISTOR MEANS, AND SAID SECOND TRANSISTOR MEANS HAVING A LOWER INTERNAL CAPACITANCE THAN SAID FIRST TRANSISTOR MEANS AD THEREFORE BEING ADAPTED TO TURN OFF FASTER THAN SAID FIRST TRANSISTOR MEANS; CURRENT SOURCE MEANS INCLUDING FIRST AND SECOND TERMIAL MEANS; LOAD MEANS; MEANS CONNECTING THE COLLECTOR MEANS AND EMITTER MEANS OF SAID FIRST AND SECOND TRANSISTORS IN SERIES WITH EACH OTHER AND IN SERIES WITH SAID LOD MEANS BETWEEN SAID FIRST AND SECOND TERMINAL MEANS OF SAID CURRENT SOURCE MEANS; FLIP-FLOP MEANS INCLUDING FIRST AND SECOND CONTROL MEANS, FIRST AND SECOND OUTPUT MEANS AND POWER INPUT MEANS; BIASING MEANS CONNECTED TO SAID FIRST AND SECOND TRANSISTOR MEANS AND TO SAID POWER INPUT MEANS OF SAID FLIP-FLOP MEANS, SAID FIRST AND SECOND TRANSISTOR MEANS BEING BIASED SO THAT IMMEDIATELY AFTER SAID SECOND TRANSISTOR MEANS CHANGES FROM A FIRST STATE OF CONDUCTIVELY TO A SECOND STATE, THE FIRST TRANSISTOR MEANS CHANGES FROM THE FIRST STATE OF CONDUCTIVELY TO THE SECOND STATE; FIRST AND SECOND DIODE MEANS EACH INCLUDING FIRST AD SECOND TERMINAL MEANS, SAID FIRST TERMINAL MEANS OF EACH OF SAID DIODE MEANS BEING CONNECTED TO SAID BASE MEANS OF SAID SECOND TRANSISTOR MEANS; TRANSFORMER MEANS INCLUDING PRIMARY WINDING MEANS AND FIRST AND SECOND SECONDARY WINDING MEANS, SAID PRIMARY WINDING MEANS BEING CONNECTED FOR RECEIVING INPUT SIGNAL PULSES; MEANS CONNECTING SAID FIRST SECONDARY WINDING TO SAID FIRST OUTPUT MEANS OF SAID FLIP-FLOP MEANS AND ALSO CONNECTING SAID FIRST SECONDARY WINDING BETWEEN SAID SECOND TERMINAL MEANS OF SAID FIRST DIODE MEANS AND AID EMITTER MEANS OF SAID SECOND TRANSISTOR MEANS FOR APPLYING SIGNAL PULSES THERETO, A SIGNAL PULSE BETWEEN SAID BASE AND EMITTER MEANS OF SAID SECOND TRANSISTOR MEANS CHANGING SAID SECOND TRANSISTOR MEANS FROM A CONDUCTIVE STATE TO A NONCONDUCTIVE STATE; MEANS CONNECTING SAID SECOND SECONDARY WINDING TO SAID FIRST CONTROL MEANS OF SAID FLIP-FLOP MEANS; MEANS CONNECTING SAID FIRST OUTPUT MEANS OF SAID FLIPFLOP MENS TO SAID SECOND TERMINAL MEANS OF SAID FIRST DIODE MEANS, SAID FLIP-FLOP MEANS BEING ADAPATED FOR PROVIDING A FIRST OUTPUT SIGNAL AT SAID FIRST OUTPUT MEANS AFTER RECEIPT OF THE SIGNAL AT AID FIRST OUTTRANSFORMER MEANS,THE FIRST OUTPUT SIGNAL BEING FOR HOLDING SAID SECOND TRANSISTOR MEANS IN THE NONCONDUCTIVE MEANS MEANS CONNECTING SAID SECOND OUTPUT MEANS OF SAID FLIP-FLOP MEANS TO SAID SECOND TERMINAL MEANS OF SAID SECOND DIODE MEANS; AND TRIGGERING MEANS CONNECTED TO SAID SECOND CONTROL MEANS OF SAID FLIP-FLOP MEANS FOR APPLYING A CONTROL SIGNAL THERETO, SAID FLIP-FLOP MEANS BEING ADAPTED FOR PROVIDING A SECOND OUTPUT SIGNAL AT SAID SECOND OUTPUT MEANS TO CHANGE SAID SECOND TRASISTOR MEAS FROM THE NONCONDUCTIVE TO THE CONDUCTIVE STATE UPON RECEIPT OF THE CONTROL SIGNAL FROM SAID TRIGGERING MEANS.