Stabilized direct current to alternating current analog converter

Claim 1

AN ELECTRONIC CIRCUIT FOR CONVERTING THE DIRECT VOLTAGE OUTPUT OF A TWO-TERMINAL DIRECT CURRENT SOURCE TO AN ALTERNATING VOLTAGE HAVING A STABLE MAGNITUDE PROPORTIONAL TO THE MAGNITUDE OF SAID DIRECT VOLTAGE OUTPUT, THE COMBINATION COMPRISING: A FREE-RUNNING MULTIVIBRATOR INCLUDING FIRST AND SECOND ELECTRON FLOW CONTROL DEVICES, EACH HAVING AN EMITTING ELECTRODE, A COLLECTING ELECTRODE, AND A CONTROL ELECTRODE, SAID EMITTING ELECTRODES BEING INTERCONNECTED, EACH OF SAID COLLECTING ELECTRODES BEING CAPACITIVELY COUPLED TO THE CONTROL ELECTRODES OF THE OTHER OF SAID DEVICES, AND A TRANSFORMER HAVING CENTER TAPPED PRIMARY AND SECONDARY WINDINGS, THE CENTER TAPS OF SAID WINDINGS BEING CONNECTED TO A POINT OF REFERENCE POTENTIAL, THE PRIMARY WINDING BEING CONNECTED BETWEEN SAID COLLECTING ELECTRODES; A CONTROL TRANSISTOR HAVING BASE, EMITTER, AND COLLECTOR ELECTRODES; A RESISTIVE IMPEDANCE CONNECTED BETWEEN THE COLLECTOR OF SAID CONTROL TRANSISTOR AND THE JUNCTION OF SAID EMITTING ELECTRODES; SERIES CIRCUIT CONNECTIONS FROM ONE TERMINAL OF SAID SOURCE THROUGH THE COLLECTOR-EMITTER JUNCTION OF SAID TRANSISTOR AND SAID RESISTIVE IMPEDANCE TO THE JUNCTION OF SAID EMITTING ELECTRODES FOR OPERATIVELY ENERGIZING SAID MULTIVIBRATOR FOR GENERATING AN ALTERNATING VOLTAGE, THE OTHER OF SAID TERMINALS BEING CONNECTED TO SAID POINT OF REFERENCE POTENTIAL; A SECOND TRANSISTOR HAVING BASE, EMITTER, AND COLLECTOR ELECTRODES, THE COLLECTOR ELECTRODE OF SAID SECOND TRANSISTOR BEING CONNECTED TO SAID POINT OF REFERENCE POTENTIAL THROUGH A BIASING IMPEDANCE; ANOTHER IMPEDANCE CONNECTED TO SAID BASE ELECTRODE OF SAID SECOND TRANSISTOR, SAID ANOTHER IMPEDANCE BEING CONNECTED IN A SERIES CIRCUIT COMPRISING SAID SOURCE AND THE BASE-EMITTER JUNCTIONS OF BOTH OF SAID TRANSISTORS; AND MEANS FOR RECTIFYING SAID ALTERNATING VOLTAGE AND FOR APPLYING SAID RECTIFIED ALTERNATING VOLTAGE ACROSS SAID ANOTHER IMPEDANCE.