Transistor bridge converter

Claim 1

AN ELECTRIC CIRCUIT FOR CONVERTING DIRECT VOLTAGE TO ALTERNATING VOLTAGE COMPRISING A FIRST AND SECOND PAIR OF UNILATERALLY CONDUCTING DEVICES, EACH DEVICE HAVING A CONDUCTION CONTROL ELEMENT; A SATURABLE CORE TRANSFORMER HAVING AN INPUT WINDING AND TWO FEEDBACK WINDINGS; A SOURCE OF DIRECT VOLTAGE; ONE OF SAID FIRST PAIR OF UNILATERALLY CONDUCTING DEVICES, SAID INPUT WINDING, AND THE OTHER OF SAID FIRST PAIR OF UNILATERALLY CONDUCTING DEVICES BEING CONNECTED IN SERIES IN THE ORDER RECITED TO SAID DIRECT VOLTAGE SOURCE TO PROVIDE CURRENT FLOW THROUGH SAID INPUT WINDING IN ONE DIRECTION; ONE OF SAID SECOND PAIR OF UNILATERALLY CONDUCTING DEVICES, SAID INPUT WINDING, AND THE OTHER OF SAID SECOND PAIR OF UNILATERALLY CONDUCTING DEVICES BEING CONNECTED IN SERIES IN THE ORDER RECITED TO SAID DIRECT VOLTAGE SOURCE TO PROVIDE CURRENT FLOW THROUGH SAID INPUT WINDING IN A DIRECTION OPPOSITE TO SAID ONE DIRECTION; AND MEANS RESPONSIVE TO VOLTAGES IN ONE FEEDBACK WINDING FOR APPLYING CONTROL POTENTIALS TO THE CONTROL ELEMENTS OF TWO OF SAID UNILATERALLY CONDUCTING DEVICES AND RESPONSIVE TO VOLTAGE IN THE OTHER FEEDBACK WINDING FOR APPLYING CONTROL POTENTIALS TO THE CONTROL ELEMENTS OF THE REMAINING UNILATERALLY CONDUCTING DEVICES TO PROVIDE ALTERNATE CONDUCTION OF SAID FIRST AND SECOND PAIRS OF AMPLIFYING DEVICES.