Self-oscillating gate controlled rectifier inverter

Claim 1

A CIRCUIT FOR CONVERTING D.C. POWER FROM A SOURCE TO A.C. POWER COMPRISING FIRST AND SECOND GATE CONTROLLED RECTIFIERS CONNECTED IN PARALLEL ACROSS THE SOURCE, EACH GATE CONTROLLED RECTIFIER HAVING FIRST AND SECOND POWER TERMINALS AND EACH HAVING A GATE TERMINAL, MEANS FOR CONNECTING SAID FIRST AND SECOND POWER TERMINALS ACROSS THE SOURCE, A COMMUTATING CAPACITOR CONNECTED BETWEEN SAID FIRST POWER TERMINALS OF SAID GATE CONTROLLED RECTIFIERS, MEANS COUPLED TO SAID POWER TERMINALS AND TO SAID GATE TERMINALS OF SAID GATE CONTROLLED RECTIFIERS AND INCLUDING A FIRST CURRENT PATH BETWEEN SAID GATE TERMINALS FOR DEVELOPING A POTENTIAL BETWEEN SAID GATE TERMINALS OF ONE POLARITY WHEN SAID FIRST GATE CONTROLLED RECTIFIER IS CONDUCTIVE AND OF THE OPPOSITE, POLARITY WHEN SAID SECOND GATE CONTROLLED RECTIFIER IS CONDUCTIVE, AND A SECOND CURRENT PATH CONNECTED BETWEEN SAID GATE TERMINALS AND INCLUDING A SATURABLE MEANS, THE SATURATION OF SAID SATURABLE MEANS CAUSING SAID POTENTIAL TO CHANGE POLARITY TO SWITCH CONDUCTION FROM THE CONDUCTIVE GATE CONTROLLED RECTIFIER TO THE NONCONDUCTIVE GATE CONTROLLED RECTIFIER.