Split primary inverter

Claim 1

AN INVERTER CIRCUIT COMPRISING AN OUTPUT TRANSFORMER HAVING FIRST AND SECOND PRIMARY WINDINGS, POWER SOURCE MEANS HAVING FIRST, SECOND AND THIRD TERMINALS WITH THE POTENTIAL AT SAID FIRST TERMINAL AND THE POSITIVE WITH RESPECT TO SAID SECOND TERMINALS AND THE POTENTIAL AT SAID SECOND TERMINAL BEING POSITIVE WITH RESPECT TO SAID THIRD TERMINAL, A FIRST MAIN CONTROLLED RECTIFIER CONNECTED TO SERIES WITH SAID FIRST PRIMARY WINDING ACROSS SAID FIRST AND SECOND TERMINALS FOR PROVIDING A FORWARD CONDUCTION PATH THEREBETWEEN, A SECOND MAIN CONTROLLED RECTIFIER CONNECTED IN SERIES WITH SAID SECOND PRIMARY WINDING ACROSS SAID SECOND AND THIRD TERMINALS FOR PROVIDING A FORWARD CONDUCTION PATH THEREBETWEEN, A SERIES RESONANT CIRCUIT MEANS CONNECTED TO ONE SIDE TO SAID SECOND TERMINAL, FIRST AND SECOND COMMUTATING CONTROLLED RECTIFIERS COMMONLY CONNECTED TO THE OTHER SIDE OF SAID RESONANT CIRCUIT MEANS FOR PROVIDING FIRST AND SECOND COMMUTATING CIRCUITS, SAID FIRST AND SECOND COMMUTATING CIRCUITS BEING COUPLED ACROSS SAID FIRST AND SECOND MAIN CONTROLLED RECTIFIERS, RESPECTIVELY, IN THE SAME CURRENT CONDUCTION RELATION AS THE SAID MAIN CONTROLLED RECTIFIER THUS ASSOCIATED THEREWITH, FIRST AND SECOND DIODE MEANS CONNECTED ACROSS SAID FIRST AND SECOND DIODE MEANS CONNECTED ACROSS SAID FIRST FOR PRESENTING LOW IMPEDANCE DISCHARGE PATHS FOR SAID SERIES RESONANT CIRCUIT, AND MEANS FOR INITIATING OPERATION OF SAID INVERTER CIRCUIT BY INTRODUCING A CONDUCTION GATE TO ONE OF SAID COMMUTATING CONTROL RECTIFIERS AND FOR THEREAFTER CYCLICALLY APPLYING AND REMOVING CONDUCTION GATES TO SAID CONTROLLED RECTIFIERS SO THAT OPERATION OF SAID RESONANT CIRCUIT MEANS WILL ALTERNATELY EXTINGUISH CONDUCTION OF SAID MAIN CONTROLLED RECTIFIERS.