Voltage stabilizer with series transistors

Claim 1

A VOLTAGE REGULATING DEVICE FOR CONNECTION TO AN INPUT VOLTAGE SOURCE AND TO SUPPLY A REGULATED VOLTAGE TO A LOAD IMPEDANCE, SAID DEVICE COMPRISING INPUT TERMINALS FOR CONNECTION TO SAID SOURCE AND OUTPUT TERMINALS FOR CONNECTION TO SAID LOAD IMPEDANCE, FIRST AND SECOND TRANSISTORS EACH INCLUDING BASE, EMITTER AND COLLECTOR ELECTRODES, ELECTRIC CONNECTION MEANS FOR CONNECTING THE COLLECTOR-EMITTER PATHS OF THE TWO TRANSISTORS IN SERIES IN A SERIES PATH BETWEEN AN INPUT TERMINAL AND AN OUTPUT TERMINAL, A REFERENCE VOLTAGE SOURCE, AN IMPEDANCE DEVICE FOR DERIVING A VOLTAGE THAT IS A FUNCTION OF THE VOLTAGE APPEARING AT SAID OUTPUT TERMINALS, A COMPARATOR RESPONDING TO SAID REFERENCE VOLTAGE AND TO SAID DERIVED VOLTAGE TO PRODUCE A COMPARISON OUTPUT SIGNAL, CIRCUIT MEANS FOR APPLYING SAID COMPARISON SIGNAL TO THE BASE OF THE FIRST TRANSISTOR, A CURRENT PATH EXTENDING FROM THE EMITTER OF THE FIRST TRANSISTOR TO THE BASE OF THE SECOND AND INCLUDING A LIMITING VOLTAGE SOURCE AND A LIMITING RESISTANCE WHEREBY SAID SECOND TRANSISTOR FUNCTIONS IN THE EMITTER-FOLLOWER CIRCUIT CONFIGURATION WITH THE COLLECTOR-EMITTER PATH OF THE FIRST TRANSISTOR AS AN EMITTER LOAD WHEREBY TO LIMIT THE VOLTAGE BETWEEN COLLECTOR AND EMITTER OF THE FIRST TRANSISTOR TO A VALUE DETERMINED BY SAID LIMITING VOLTAGE SOURCE AND TO CAUSE BOTH TRANSISTORS TO BOTTOM ON CURRENT OVERLOAD, SAID LIMITING RESISTOR LIMITING TO A SAFE PERMISSIBLE VALUE THE BASE CURRENT OF SAID SECOND TRANSISTOR.