Regulated power supply

Claim 2

A VOLTAGE REGULATOR CIRCUIT COMPRISING A POWER TRANSISTOR HAVING ITS EMITTER-COLLECTOR CIRCUIT CONNECTED BETWEEN A SOURCE OF UNREGULATED D.-C. VOLTAGE AND A LOAD CIRCUIT TERMINAL AND MEANS FOR ALTERNATIVELY SWITCHING SAID POWER TRANSISTOR ON AND OFF IN ACCORDANCE WITH THE POTENTIAL AT SAID LOAD TERMINAL, SAID MEANS COMPRISING A COMPARSON CIRCUIT INCLUDING A SOURCE OF REFERENCE VOLTAGE AND CIRCUIT MEANS PROVIDING A CONTROL SIGNAL IN ACCORDANCE WITH THE DEPARTURE OF SAID LOAD TERMINAL POTENTIAL FROM SAID REFERENCE, VOLTAGE, A REGENERATIVE SWITCHING TRIGGER CIRCUIT RECEIVING SAID CONTROL SIGNAL AS INPUT AND HAVING AN OUTPUT CONNECTION TO THE BASE ELETRODE OF SAID POWER TRANSISTOR FOR SWITCHING IT ALTERNATIVELY ON AND OFF, AND AN ACTIVE REVERSE BIASING CIRCUIT COMPRISING A SOURCE OF BIAS VOLTAGE AND A TRANSISTOR RESPONSIVE TO THE STATE OF SAID TRIGGER CIRCUIT AND HAVNG CONNECTIONS TO APPLY SAID BIAS VOLTAGE AND TRANSISTOR RESPONSIVE TO THE STATE OF EVER THE SIGNAL OUTPUT FROM SAID TRIGGER CIRCUIT IS TURNING SAID POWER TRANSISTOR OFF WHEREBY TO ACHIEVE A RAPID TRANSITION FROM CONDUCTION TO NON-CONDUCTION IN SAID POWER TRANSISTOR.

Claim 3

A REGULATED POWER SUPPLY FOR DERIVING A REGULATED D.C. VOLTAGE FROM AN ALTERNATING C URRENT SOURCE COMPRISING A RECTIFIER CIRCUIT PROVIDING AN UNREGULATED UNIDIRECTIONAL VOLTAGE AT AN INTERMEDIATE POINT RELATIVE TO A COMMON TERMINAL, A POWER TRANSISTOR HAVING EMITTER, BASE AND COLLECTOR, A CONDUCTIVE IMPEDANCE, THE EMITTER-COLLECTOR PATH OF SAID POWER TRANSISTOR AND SAID CONDUCTIVE IMPEDANCE BEING CONNECTED IN SERIES BETWEEN SAID INTERMEDIATE POINT AND AN OUTPUT TERMINAL, A DIODE CONNECTED BETWEEN SAID COMMON TERMINAL AND THE JUNCTION OF SAID TRANSISTOR AND CONDUCTIVE IMPEDANCE, A CAPACITOR CONNECTED BETWEEN SAID COMMON TERMINAL AND SAID OUTPUT TERMINAL, AND MEANS FOR ALTERNATIELY SWITCHING SAID POWER TRANSISTOR ON AND OFF IN ACCORDANCE WITH THE POTENTIAL AT SAID OUTPUT TERMINAL COMPRISING A COMPARISON CIRCUIT INCLUDING A SOURCE OF REFERENCE VOLTAGE AND CIRCUIT MEANS PROVIDING A CONTROL SIGNAL PROPORTIONAL TO THE DEPARTURE OF THE OUTPUT POTENTIAL FROM SAID REFERENCE VOLTAGE, AN AMPLIFIER FOR AMPLYING SAID CONTROL SIGNAL, A REGENERATIVE SWITCHING TRIGGER CIRCUIT RECEIVING AS INPUT THE CONTROL SIGNAL FROM SAID AMPLIFIER AND HAVING AN OUTPUT CONNECTION TO THE BASE ELECTRODE OF SAID POWER TRANSISTOR FOR TURNING IT ALTERNATIVELY ON AND OFF, AND AN ACTIVE REVERSE BIASING CIRCUIT COMPRISING A SOURCE OF BIAS VOLTAGE AND A TRANSISTOR RESPONSIVE TO THE STATE OF SID TRIGGER CIRCUIT AND HAVING CONNECTIONS TO APPLY SAID BIAS VOLTAGE TO THE BASE OF SAID POWER TRANSISTOR WHENEVER THE SIGNAL OUTPUT FROM SAID TRIGGER CIRCUIT IS TURNING SAID POWER TRANSISTOR OFF WHEREBY TO ACHIEVE A RAPID TRANSITION FROM CONDUCTION TO NON-CONDUCTION IN SAID POWER TRANSISTOR.

Claim 4

A REGULATED POWER SUPPLY FOR DERIVING A REGULATED D.C. VOLTAGE FROM AN ALTERNATING C URRENT SOURCE COMPRISING A RECTIFIER CIRCUIT PROVIDING AN UNREGULATED UNIDIRECTIONAL VOLTAGE AT AN INTERMEDIATE POINT RELATIVE TO A COMMON TERMINAL, A POWER TRANSISTOR HAVING EMITTER, BASE AND COLLECTOR, A CONDUCTIVE IMPEDANCE, THE EMITTER-COLLECTOR PATH OF SAID POWER TRANSISTOR AND SAID CONDUCTIVE IMPEDANCE BEING CONNECTED IN SERIES BETWEEN SAID INTERMEDIATE POINT AND AN OUTPUT TERMINAL, A DIODE CONNECTED BETWEEN SAID COMMON TERMINAL AND THE JUNCTION OF SAID TRANSISTOR AND CONDUCTIVE IMPEDANCE, A CAPACITOR CONNECTED BETWEEN SAID COMMON TERMINAL AND SAID OUTPUT TERMINAL, AND MEANS FOR ALTERNATIELY SWITCHING SAID POWER TRANSISTOR ON AND OFF IN ACCORDANCE WITH THE POTENTIAL AT SAID OUTPUT TERMINAL COMPRISING A COMPARISON CIRCUIT INCLUDING A SOURCE OF REFERENCE VOLTAGE AND CIRCUIT MEANS PROVIDING A CONTROL SIGNAL PROPORTIONAL TO THE DEPARTURE OF THE OUTPUT POTENTIAL FROM SAID REFERENCE VOLTAGE, AN AMPLIFIER FOR AMPLYING SAID CONTROL SIGNAL, A REGENERATIVE SWITCHING TRIGGER CIRCUIT RECEIVING AS INPUT THE CONTROL SIGNAL FROM SAID AMPLIFIER AND HAVING AN OUTPUT CONNECTION TO THE BASE ELECTRODE OF SAID POWER TRANSISTOR FOR TURNING IT ALTERNATIVELY ON AND OFF, AND AN ACTIVE REVERSE BIASING CIRCUIT COMPRISING A SOURCE OF BIAS VOLTAGE AND A TRANSISTOR RESPONSIVE TO THE STATE OF SID TRIGGER CIRCUIT AND HAVING CONNECTIONS TO APPLY SAID BIAS VOLTAGE TO THE BASE OF SAID POWER TRANSISTOR WHENEVER THE SIGNAL OUTPUT FROM SAID TRIGGER CIRCUIT IS TURNING SAID POWER TRANSISTOR OFF WHEREBY TO ACHIEVE A RAPID TRANSITION FROM CONDUCTION TO NON-CONDUCTION IN SAID POWER TRANSISTOR.