Oscillator controller with reset or rate action

Claim 1

IN A CONTROL SYSTEM FOR SUPPLY ENERGY TO AN ENERGY-UTILIZATION DEVICE AT A RATE PROPORTIONAL TO AN OUTPUT SIGNAL AND THEREBY TO CONTROL THE VALUE OF A VARIABLE CONDITION, THE COMBINATION COMPRISING MEANS FOR SIGNALLING THE ACTUAL VALUE OF THE VARIABLE CONDITION, A TRANSDUCER RESPONSIVE TO SAID SIGNALLING MEANS AND INCLUDING FIRST MEANS FOR PRODUCING AN OUTPUT SIGNAL WHICH NORMALLY VARIES IN PROPORTION TO THE ERROR BETWEEN SAID ACTUAL VALUE AND A SET POINT, SAID TRANSDUCER INCLUDING SECOND MEANS NON-RESPONSIVE TO SAID SIGNALLING MEANS FOR ALTERING THE OUTPUT SIGNAL, SAID SECOND MEANS INCLUDING A VOLTAGE-CONTROLLED VARIABLE IMPEDANCE AND MEANS RESPONSIVE TO THE IMPEDANCE VALUE THEREOF FOR AFFECTING THE MAGNITUDE OF SAID OUTPUT SIGNAL, AND MEANS CONNECTED TO RECEIVE SAID OUTPUT SIGNAL AND RESPONSIVE THERETO FOR APPLYING ACROSS SAID IMPEDANCE A CONTROL VOLTAGE WHICH VARIES AS A FIRST TIME FUNCTION OF SAID OUTPUT SIGNAL, THEREBY TO ALTER SAID OUTPUT SIGNAL AS A SECOND, INVERSE TIME FUNCTION OF SAID ERROR.