Voltage sensing control circuit

Claim 1

THE COMBINATION WITH A POWER SUPPLY SYSTEM FOR SUPPLYING A PLURALITY OF SEPARATELY DEVELOPED OUTPUT VOLTAGES OF INDEPENDENT VOLTAGE LEVELS OVER A PLURALITY OF SUPPLY CONDUCTORS TO A PLURALITY OF DIFFERENT LOAD CIRCUITS FROM A SOURCE OF ELECTRICAL POWER CONNECTED TO THE INPUT OF THE SYSTEM, OF MEANS FOR SENSING A CHANGE IN VOLTAGE OF ANY OF THE SUPPLY CONDUCTORS IN EXCESS OF A GIVEN PERCENTAGE CHANGE $ IN THE RATED VOLTAGE THEREOF INCLUDING AN UNDERVOLTAGE RESPONSIVE CONTROL DEVICE AND AN OVERVOLTAGE RESPONSIVE CONTROL DEVICE, EACH OPERABLE FOR A GIVEN OPERATING VOLTAGE EVO IMPRESSED THEREACROSS, A PLURALITY OF VOLTAGE DIVIDERS EACH CONNECTED TO A DIFFERENT ONE OF SAID CONDUCTORS AND PROPORTIONED TO PROVIDE THE SAME POTENTIAL LEVEL ED AT THE DIVISION POINT OF EACH DIVIDER WHEN THE SUPPLY CONDUCTORS ARE AT THEIR RATED VOLTAGE LEVELS, A PLURALITY OF PAIRS OF OPPOSITELY POLED DIODES, A DIFFERENT ONE OF SAID PAIRS FOR EACH OF SAID DIVIDERS AND ONE SIDE OF EACH DIODE IN SAID PAIR CONNECTED BETWEEN THE DIVISION POINT OF ITS DIVIDER AN THE OTHER SIDE OF EACH OF SAID DIODE IN SAID PAIR CONNECTED TO ONE SIDE OF A DIFFERENT ONE OF SAID VOLTAGE RESPONSIVE CONTROL DEVICES, A REFERENCE VOLTAGE RESPONSIVE CONTROL DEVICES SIDE OF EACH OF SAID VOLTAGE SOURCE CONNECTED TO THE OTHER AND SUPPLYING REFERENCE VOLTAGES ERU AND ERO TO THE UNDERVOLTAGE AND OVERVOLTAGE RESPONSIVE CONTROL DEVICES RESPECTIVELY, WHOSE MAGNITUDES ARE EXPRESSED BY THE RELATIONSHIPS ERU=ED-$ED+EVO ERO=ED+$ED-EVO