Electronic circuit protector

Claim 1

IN COMBINATION WITH A VOLTAGE REGULATOR FOR PROVIDING A REGULATED VOLTAGE SUPPLY AT OUTPUT TERMINALS THEREOF FROM AN UNREGULATED VOLTAGE SUPPLY COMPRISING FIRST VARIABLE IMPEDANCE MEANS HAVING A FIRST TERMINAL AND FIRST CONTROL ELECTRODE MEANS, SAID FIRST VARIABLE IMPEDANCE MEANS BEING CONNECTED IN SERIES ARRANGEMENT WITH SAID UNREGULATED VOLTAGE SUPPLY AND CONSTRUCTED TO HAVE ITS IMPEDANCE DETERMINED BY THE VOLTAGE SUPPLIED ACROSS SAID FIRST TERMINAL AND SAID CONTROL ELECTRODE, CIRCUIT PROTECTOR MEANS COMPRISING SENSING IMPEDANCE MEANS HAVING A TERMINAL IN COMMON WITH SAID FIRST TERMINAL AND BEING IN SERIES WITH SAID FIRST VARIABLE IMPEDANCE MEANS AND SAID UNREGULATED VOLTAGE SUPPLY AND ELECTRONIC SWITCHING MEANS HAVING CATHODE MEANS, ANODE MEANS, AND SECOND CONTROL ELECTRODE MEANS, MEANS FOR CONNECTING SAID ANODE TO THE CONTROL ELECTRODE MEANS OF SAID FIRST VARIABLE IMPEDANCE MEANS, THE SAID SECOND CONTROL ELECTRODE BEING CONNECTED TO THE SAID TERMINAL OF SAID SENSING IMPEDANCE MEANS, AND SAID CATHODE MEANS BEING CONNECTED TO THE OTHER TERMINAL OF SAID SENSING IMPEDANCE.