Voltage regulators

Claim 1

A VOLTAGE REGULATOR COMPRISING IN COMBINATION FIRST AND SECOND TERMINALS FOR CONNECTION TO A D.C. SUPPLY TO BE REGULATED, THIRD AND FOURTH TERMINALS FOR CONNECTION TO A LOAD, THE SECOND AND FOURTH TERMINALS BEING INTERCONNECTED, A FIRST CONTROLLED RECTIFIER THROUGH THE ANODE AND CATHODE OF WHICH THE FIRST AND THIRD TERMINALS ARE INTERCONNECTED, A CAPACITOR CONNECTED AT ONE SIDE TO THE CATHODE OF THE FIRST CONTROLLED RECTIFIER, A FIRST INDUCTOR CONNECTED IN SERIES WITH A SECOND CONTROLLED RECTIFIER BETWEEN THE OTHER SIDE OF THE CAPACITOR AND THE ANODE OF THE CONTROLLED RECTIFIER, A SECOND INDUCTOR CONNECTED IN SERIES WITH A THIRD CONTROLLED RECTIFIER BETWEEN SAID OTHER SIDE OF THE CAPACITOR AND THE SECOND TERMINAL, A DIODE HAVING ITS ANODE AND CATHODE CONNECTED RESPECTIVELY TO THE CATHODE AND ANODE OF THE FIRST CONTROLLED RECTIFIER, AND A CONTROL CIRCUIT CONNECTED TO THE GATES OF THE CONTROLLED RECTIFIERS, THE CONTROL CIRCUIT INCLUDING FIRST PULSE-PRODUCING MEANS FOR SWITCHING THE FIRST CONTROLLED RECTIFIER ON AT PREDETERMINED EQUAL INTERVALS OF TIME, SECOND PULSE-PRODUCING MEANS OPERABLE AT FIXED INTERVALS AFTER SWITCHING ON OF THE FIRST CONTROLLED RECTIFIER FOR SWITCHING THE THIRD CONTROLLED RECTIFIER ON, SWITCHING ON OF THE THIRD CONTROLLED RECTIFIER RESULTING IN CHARGING OF THE CAPACITOR UNTIL THE THIRD CONTROLLED RECTIFIER IS AUTOMATICALLY SWITCHED OFF BY THE BACK BIAS ACROSS IT, THIRD PULSE-PRODUCING MEANS FOR SWITCHING ON THE SECOND CONTROLLED RECTIFIER AT A VARIABLE INSTANT AFTER SWITCHING ON OF THE THIRD CONTROLLED RECTIFIER, AND FOURTH PULSE-PRODUCING MEANS FOR SWITCHING ON THE SECOND CONTROLLED RECTIFIER AT THE SAME TIME AS THE FIRST CONTROLLED RECTIFIER IS RENDERED CONDUCTIVE, SWITCHING ON OF THE SECOND CONTROLLED RECTIFIER PERMITTING DISCHARGE OF THE CAPACITOR THROUGH THE DIODE AND CONSEQUENTIAL SWITCHING OFF OF THE FIRST CONTROLLED RECTIFIER, SAID VARIABLE INSTANT BEING DETERMINED BY THE VOLTAGE ACROSS THE THIRD AND FOURTH TERMINALS SO THAT THE MEAN VOLTAGE ACROSS THE THIRD AND FOURTH TERMINALS IS MAINTAINED SUBSTANTIALLY CONSTANT, AND SAID FIRST, SECOND AND FOURTH PULSE-PRODUCING MEANS BEING CONSTITUTED BY A SQUARE WAVE OSCILLATOR AND ASSOCIATED DELAY AND SHAPING CIRCUITS.