Voltage regulators

Claim 1

A D.C. VOLTAGE REGULATOR COMPRISING IN COMBINATION A PAIR OF UNPUT TERMINALS, A PAIR OF OUTPUT TERMINALS, A D.C. SOURCE CONNECTED BETWEEN THE INPUT TERMINALS, A LOAD CONNECTED BETWEEN THE OUTPUT TERMINALS, A TRANSISTOR HAVING ITS COLLECTOR AND EMITTER CONNECTED BETWEEN ONE OF THE INPUT TERMINALS AND ONE OF THE OUTPUT TERMINALS, THE OTHER INPUT TERMINAL BEING CONNECTED TO THE OTHER OUTPUT TERMINAL, A SQUARE WAVE OSICLLATOR CONNECTED ACROSS SAID INPUT TERMINALS SO AS TO BE OPERABLE BY SAID D.C. SOURCE, SAID OSCILLATOR PRODUCING AN OUTPUT CONSISTING OF SUCCESSIVE POSITIVE AND NEGATIVE HALF-CYCLES, A PAIR OF SWITCHING CIRCUITS THROUGH WHICH THE OUTPUT FROM THE OSCILLATOR IS APPLIED TO THE BASE OF THE TRANSISTOR SO THAT AT THE COMMENCEMENT OF EACH HALF-CYCLE OF THE OSCILLATOR THE TRANSISTOR IS RENDERED CONDUCTIVE, A PAIR OF CONTROLLED RECTIFIERS CONNECTED IN CIRCUIT WITH THE BASE-EMITTER JUNCTION OF SAID TRANSISTOR, EACH OF SAID CONTROLLED RECTIFIERS SERVING WHEN CONDUCTIVE TO REVERSE BIAS SAID BASE-EMITTER JUNCTION TO TURN SAID TRANSISTOR OFF, A PULSE-PRODUCING CIRCUIT HAVING CONNECTIONS TO SAID OUTPUT TERMINALS, SAID PULSE-PRODUCING CIRCUIT PRODUCING IN HALF-CYCLE DEPENDENT ON OUTPUT PULSE AT A TIME IN THE HALF-CYCLE DEPENDENT ON THE OUTPUT VOLTAGE ACROSS SAID OUTPUT TERMINALS, MEANS CONNECTING THE OUTPUT FROM SAID PULSE-PRODUCING CIRCUIT TO THE GATES OF THE CONTROLLED RECTIFIERS, AND BIASING MEANS OPERABLE BY SAID OSCILLATOR FOR BIASING SAID CONTROLLED RECTIFIERS SO THAT ONE OF THEM IS HELD NON-CONDUCTIVE DURING THE POSITIVE HALF-CYCLE OF THE OSCILLATOR OUTPUT, AND THE OTHER CONTROLLED RECTIFIER IS HELD NON-CONDUCTIVE DURING THE NEGATIVE HALF-CYCLES OF THE OSCILLATOR OUTPUT.