Voltage magnitude control system

Claim 1

A VOLTAGE REGULATING DEVICE FOR MAINTAINING THE VOLTAGE IN A SYSTEM WITHIN PREDETERMINED LIMITS, REVERSIBLE VOLTAGE MODIFYING MEANS CONNECTED TO SAID SYSTEM FOR CHANGING THE VOLTAGE THEREIN, CURRENT INTEGRATING MEANS HAVING FIRST AND SECOND INPUTS, CIRCUIT MEANS COUPLED TO SAID FIRST AND SECOND INPUTS AND OPERABLE WHEN SAID SYSTEM VOLTAGE FALLS BELOW SAID LIMITS TO INITIATE THE FLOW OF SUBSTANTIALLY UNIFORM CHARGING CURRENT THROUGH ONE INPUT OF SAID CURRENT INTEGRATING MEANS TO CHARGE THE SAME AT A SUBSTANTIALLY CONSTANT RATE IN A FIRST SENSE AND OPERABLE WHEN SAID SYSTEM VOLTAGE RISES ABOVE SAID LIMITS TO INITIATE THE FLOW OF SUBSTANTIALLY UNIFORM CHARGING CURRENT THROUGH THE OTHER INPUT OF SAID CURENT INTEGRATING MEANS TO CHARGE THE SAME AT A SUBSTANTIALLY CONSTANT RATE IN AN OPPOSITE SENSE, MEANS COUPLED TO SAID INPUTS AND TO SAID SYSTEM FOR DISCHARGING SAID CURRENT INTEGRATING MEANS AT A SUBSTANTIALLY CONSTANT RATE IN EITHER SENSE WHEN SAID SYSTEM VOLTAGE RETURNS TO SAID LIMITS, AND OUTPUT MEANS COUPLED TO SAID VOLTAGE MODIFYING MEANS AND TO SAID INPUTS AND OPERABLE TO INITIATE THE OPERATION OF SAID OUTPUT MEANS IN A VOLTAGE RAISING DIRECTION WHEN THE CHARGE ON SAID CURRENT INTEGRATING MEANS REACHES A PREDETERMINED VALUE IN A FIRST SENSE, AND TO INITIATE THE OPERATION THEREOF AND IN A VOLTAGE LOWERING DIRECTION WHEN THE CHARGE ON SAID CURRENT INTEGRATING MEANS REACHES A PREDETERMINED VALUE IN THE OPPOSITE SENSE.