Dynamoelectric machine and control therefor

Claim 1

IN A VARIABLE SPEED ALTERNATING CURRENT MOTOR, A CYLINDRICAL HOUSING HAVING APERTURED END BELLS SECURED TO THE OPPOSITE ENDS TO PERMIT FLUID FLOW THERETHROUGH, AN ANNULAR STATOR WINDING UNIT INCLUDING A START WINDING AND A RUN WINDING CONNECTED WITH A CAPACITOR TO FORM A PERMANENT SPLIT CAPACITOR STATOR UNIT, SAID WINDING UNIT BEING MOUNTED WITHIN THE HOUSING IN SPACED RELATION TO ONE END TO DEFINE AN INTERNAL CONTROL CHAMBER, A ROTOR CONCENTRICALLY MOUNTED WITHIN THE WINDING UNIT AND CARRIED BY THE SHAFT, A SOLID STATE SYMMETRICAL SWITCH MEANS CONNECTED TO ONE SIDE OF THE STATOR WINDINGS AND INCLUDING FIRING MEANS, MEANS MOUNTING SAID SWITCH MEANS ON THE INNNER SURFACE OF THE END BELL FORMING A PART OF THE CONTROL CHAMBER, SAID SWITCH BEING SERIES CONNECTED WITH THE WINDING UNIT, A FIRING CIRCUIT FOR SAID SWITCHING MEANS INCLUDING A VOLTAGE DIVIDING NETWORK CONNECTED IN A PARALLEL WITH THE SWITCH MEANS AND THE WINDING UNIT AND A TIMING CAPACITOR CONNECTED IN SERIES WITH A CHARGING CONTROL CIRCUIT ACROSS A PORTION OF THE VOLTAGE DIVIDING NETWORK, SAID CHARGING CONTROL CIRCUIT INCLUDING A SOLID STATE AMPLIFYING MEANS HAVING ITS OUTPUT CONNECTED TO CHANGE THE CAPACITOR DURING EACH HALF CYCLE AND A CONTROL ELEMENT MOUNTED SEPARATELY FROM THE OTHER ELEMENTS AND CONNECTED TO CONTROL THE BIAS ON THE AMPLIFYING MEANS AND THEREBY THE CHARGING RATE OF THE CAPACITOR, SAID FIRING CIRCUIT INCLUDING A TRIGGER DIODE MEANS CONNECTED BETWEEN THE CAPACITOR AND THE FIRING MEANS, MEANS TO MOUNT THE SWITCHING MEANS AND THE FIRING CIRCUIT COMPONENTS WITHIN THE CONTROL CHAMBER, AND WHEREIN SAID CHARGING CIRCUIT INCLUDES A RECTIFYING CIRCUIT HAVING INPUT TERMINALS CONNECTED BETWEEN THE TIMING CAPACITOR AND THE VOLTAGE DIVIDING NETWORK AND HAVING INPUT TERMINALS CONNECTED BETWEEN THE BEING CONNECTED ACROSS THE OUTPUT TERMINALS IN PARALLEL WITH A CONTROL VOLTAGE DIVIDING NETWORK HAVING THE CONTROL ELEMENT THEREIN, SAID AMPLIFYING MEANS HAVING A CONTROL TERMINAL MEANS CONNECTED TO THE CONTROL VOLTAGE DIVIDING NETWORK TO BIAS THE AMPLIFYING MEANS.