Voltage magnitude and temperature control in a heated device

Claim 1

THE COMBINATION WITH AN ELECTRICALLY HEATED FIBER FORMING FEEDER FOR MOLTEN GLASS FOR PRODUCING GLASS FIBERS OF A TEMPERATURE CONTROL CIRCUIT FOR MAINTAINING A PREDETERMINED SUBSTANTIALLY CONSTANT TEMPERATURE WITHIN SAID FEEDER, SAID TEMPERATURE CONTROL CIRCUIT COMPRISING MEANS FOR SENSING THE TEMPERATURE OF SAID DEVICE AND GENERATING A CONTROL SIGNAL PROPORTIONAL TO ANY DEVIATION FROM SAID PREDETERMINED TEMPERATURE, A MAGNETIC AMPLIFIER, MEANS COUPLING SAID CONTROL SIGNAL TO SAID MAGNETIC AMPLIFIER, A CONTROL TRANSFORMER, MEANS COUPLING SAID CONTROL TRANSFORMER TO SAID MAGNETIC AMPLIFIER, A STEP-DOWN TRANSFORMER, MEANS COUPLING SAID MAGNETIC AMPLIFIER TO SAID STEP-DOWN TRANSFORMER AND SAID CONTROL TRANSFORMER, A SILICON CONTROLLED RECTIFIER ASSEMBLY, MEANS COUPLING SAID SILICON CONTROLLED RECTIFIER ASSEMBLY TO SAID STEP-DOWN TRANSFORMER, A SOURCE OF ALTERNATING CURRENT, MEANS COUPLING SAID ALTERNATING CURRENT SOURCE TO SAID SILICON CONTROLLED RECTIFIER ASSEMBLY AND TO SAID CONTROL TRANSFORMER, AND MEANS FOR CONNECTING SAID SILICON CONTROLLED RECTIFIER ASSEMBLY TO SAID HEATED FIBER FORMING FEEDER, WHEREBY THE AMOUNT OF POWER FED TO SAID HEATED FIBER FORMING FEEDER IS REGULATED BY THE SILICON CONTROLLED RECTIFIER ASSEMBLY IN ACCORDANCE WITH THE CONTROL SIGNAL GENERATED.