Constant volts-per-cycle energizing system in which the frequency of the energy is first adjusted and thereafter the amplitude of the energy is regulated to maintain a preset volts-per-cycle ratio

Claim 1

A CONTROL SYSTEM FOR REGULATING THE VOLTS-PER-CYCLE RATIO OF ENERGY PASSED FROM AN ALTERNATING ENERGY SUPPLY TO AN ELECTRICAL LOAD, COMPRISING A TRANSFORMER RECTIFIER FOR RECEIVING THE ALTERNATING ENERGY AND PROVIDING A SUBSTANTIALLY CONSTANT DC OUTPUT VOLTAGE, AN INVERTER COUPLED TO SAID TRANSFORMER RECTIFIER FOR ENERGIZATION BY SAID SUBSTANTIALLY CONSTANT DC OUTPUT VOLTAGE FROM THE TRANSFORMER RECTIFIER TO PRODUCE AN ALTERNATING OUTPUT VOLTAGE, FREQUENCY REGULATING MEANS COUPLED TO SAID INVERTER FOR GOVERNING THE RATE OF ALTERNATING OF ITS OUTPUT VOLTAGE, AND VARIABLE TRANSFORMER MEANS, COUPLED BETWEEN SAID INVERTER AND THE ELECTRICAL LOAD, FOR PROVIDING A VARIATION IN THE OUTPUT VOLTAGE LEVEL OF THE TRANSFORMER, TO SUPPLY THE LOAD WIHT ENERGY OF A SUBSTANTIALLY CONSTANT VOLTS-PER-CYCLE RATIO.