Electrical responsive controls for prime mover dynamo plants

Claim 1

A COMBINED FREQUENCY AND LOAD REGULATOR FOR AN ALTERNATING CURRENT SOURCE, NA) AN ELECTRORESPONSIVE CONTROL FOR ADJUSTING THE FREQUENCY AND CURRENT OUTPUT OF SAID SOURCE, (B) A CONTROL UNIT INCLUDING A MAGNETIC AMPLIFIER HAVING CONTROL WINDINGS FOR ACTUATING SAID ELECTRORESPONSIVE CONTROL AND A PLURALITY OF SATURATING WINDING MEANS INCLUDING A PAIR OF FREQUENCY CONTROL WINDINGS AND A LOAD CURRENT CONTROL WINDING, (C) A FREQUENCY DETECTING CIRCUIT INCLUDNG A PAIR OF TUNED CIRCUITS CONNECTED TO THE OUTPUT OF THE CURRENT SOURCE, ONE OF SAID CIRCUITS BEING TUNED TO A FREQUENCY ABOVE THE REGULATED FREQUENCY AND CONNECTED TO ONE OF SAID FREQUENCY CONTROL WINDINGS AND THE SECOND OF SAID CIRCUITS BEING TUNED TO A FREQUENCY BELOW THE REGULATED FREQUENCY AND CONNECTED TO THE SECOND OF SAID FREQUENCY CONTROL WINDINGS, (D) A LOAD DETECTING CIRCUIT INCLUDING A PAIR OF ADDITIVE RECTIFYING CIRCUITS ONE OF WHICH INCLUDES A SIGNAL PROPORTIONAL TO THE LOAD CURRENT AND PROVIDING A LOAD PROPORTIONAL OUTPUT SIGNAL MEANS, AND (E) A FREQUENCY DROOP ADJUSTMENT POTENTIOMETER CIRCUIT CONNECTING SAID OUTPUT SIGNAL MEANS TO SAID LOAD CURRENT CONTROL WINDING AND BEING PRESETTABLE TO DETERMINE THE FREQUENCY CHARACTERISTIC BETWEEN NON-LOAD AND LOAD CONDITIONS OF THE ALTERNATING CURRENT SOURCE.