Regulated adjustable power supply having a primary current controlled by input and output voltages

Claim 1

IN A POWER SUPPLY FOR CONVERTING AN INPUT ALTERNATING CURRENT SIGNAL TO A DIRECT CURRENT OUTPUT VOLTAGE, SAID POWER SUPPLY INCLUDING A POWER TRANSFORMER THE PRIMARY WINDINGS OF WHICH RECEIVE SAID INPUT SIGNAL, VOLTAGE RECTIFYING MEANS CONNECTED TO SECONDARY WINDING OF SAID POWER TRANSFORMER AND PRODUCING A DIRECT CURRENT OUTPUT VOLTAGE; MEANS FOR REGULATING SAID DIRECT CURRENT OUTPUT VOLTAGE COMPRISING FULL WAVE VOLTAGE CONTROLLED RECTIFYING MEANS SERIALLY CONNECTED WITH SAID INPUT SIGNAL AND THE PRIMARY WINDING OF SAID POWER TRANSFORMER, SAID VOLTAGE CONTROLLED RECTIFYING MEANS BEING RESPONSIVE TO AN INPUT TRIGGER SIGNAL THERETO TO FIRE AND PASS THERETHROUGH PREDETERMINED PORTIONS OF SUCCESSIVE HALF CYCLES OF SAID INPUT SIGNAL, REFERENCE VOLTAGE FULL WAVE RECTIFYING MEANS RECEIVING SAID INPUT SIGNAL AND DEVELOPING THEREFROM A PULSATING DIRECT CURRENT REFERENCE, MEANS APPLYING SAID REFERENCE VOLTAGE THROUGH AN RC NETWORK, SAID NETWORK COMPRISING A RESISTOR AND A CAPACITOR RESPECTIVELY SERIALLY CONNECTED WITH THE OUTPUT FROM SAID NETWORK BEING THE VOLTAGE ACROSS SAID CAPACITOR, MEANS SAMPLING SAID DIRECT CURRENT OUTPUT VOLTAGE, FEEDBACK CONTROL MEANS CONNECTED TO SAID RC NETWORK AND RECEIVING THE OUTPUT OF SAID SAMPLING MEANS AND IN RESPONSE THERETO EFFECTING A VARIATION IN THE CHARGING RATE OF SAID RC NETWORK, AND MEANS DEVELOPING SAID TRIGGER SIGNAL IN RESPONSE TO A PREDETERMINED CHARGE BEING EFFECTED ON SAID CAPACITOR DURING EACH SUCCESSIVE HALF CYCLE OF SAID INPUT SIGNAL.