Regulated d. c. to d. c. converter employing saturable reactor control means for a single silicon controlled rectifier

Claim 1

IN COMBINATION, A CONTROLLED RECTIFIER HAVING AN ANODE,A CATHODE AND A GATE ELECTRODE, A UNIDIRECTIONAL POTENTIAL SOURCE HAVING POSITIVE AND NEGATIVE TERMINALS, A STORAGE CAPACITOR, MEANS CONNECTING THEANODE-CATHODE PATH OF SAID RECTIFIER AND SAID CAPACITOR IN SERIES BETWEEN SAID POSITIVE AND NEGATIVE TERMINALS, A LOAD ADAPTED TO BE COUPLED ACROSS SAID CAPACITOR, AN OSCILLATOR, A CONTROL CIRCUIT COUPLED BETWEEN SAID OSCILLATOR AND SAID RECTIFIER, SAID CONTROL CIRCUIT INCLUDING A PLURALITY OF SATURATING REACTOR MEANS COUPLED TO SAID GATE AND SAID ANODE, MEANS APPLYING POSITIVE OSCILLATOR OUTPUT ALTERNATIONS TO THE SATURATING MEANS OUPLED TO SAID GATE TO RENDER SAID RECTIFIER CONDUCTIVE A FIXED PERIOD AFTER INITIATION OF THE ALTERNATION TO CHARGE SAID CAPACITOR, MEANS APPLYING NEGATIVE OSCILLATOR OUTPUT ALTERNATIONS TO THE SATURATING REACTOR COUPLED TO THE ANODE TO RENDER SAID RECTIFIER NONCONDUCTIVE A FIXED PERIOD AFTER INITIATION OF THE NEGATIVE ALTERNATION SO THAT SAID RECTIFIER IS CONDUCTIVE FOR A PREDETERMINED INTERVAL TO ESTABLISH AN OUTPUT VOLTAGE ACROSS THE LOAD, MEANS FOR DEVELOPING A CONTROL SIGNAL PROPORTIONAL TO THE OUTPUT VOLTAGE ACROSS SAID LOAD, AND MEANS COUPLING SAID CONTROL VOLTAGE TO SAID SATURABLE REACTOR MEANS FOR VARY ING THE POINT AT WHICH THEY SATURATE THEREBY CHANGING THE CONDUCTIVE INTERVAL OF SAID RECTIFIER.