Signal controlled inverter-power amplifier

Claim 1

A SYNCHRONOUS INVERTER DEVICE FOR CONVERTING DIRECT CURRENT TO ALTERNATING CURRENT FOR DRIVING A LOAD HAVING FIRST AND SECOND TERMINALS, THE INVERTER DEVICE EMPLOYING A PLURALITY OF CONTROLLED RECTIFIER DEVICES EACH HAVING A CATHODE, AN ANODE AND A GATE, EACH CONTROLLED RECTIFIER HAVING THE CHARACTERISTICS OF BLOCKING CURRENT IN EITHER THE FORWARD OR REVERSE DIRECTIONS UNTIL A TRIGGER PULSE IS APPLIED TO THE GATE, THEN CONDUCTING CONVENTIONAL CURRENT IN THE FORWARD DIRECTION FROM THE ANODE TO THE CATHODE UNTIL A REVERSE BIAS IS APPLIED FROM THE CATHODE TO THE ANODE, AND THEN ASSUMING THE FORWARD AND REVERSE CURRENT BLOCKING CHARACTERISTIC AGAIN, THE INVERTER DEVICE COMPRISING: A FIRST CONTROLLED RECTIFIER, THE FIRST LOAD TERMINAL AND A FOURTH CONTROLLED RECTIFIER CONNECTED IN SERIES IN THE FORWARD DIRECTION ACROSS A DIRECT CURRENT POWER SOURCE; A SECOND CONTROLLED RECTIFIER, THE SECOND LOAD TERMINAL AND A THIRD CONTROLLED RECTIFIER CONNECTED IN SERIES IN THE FORWARD DIRECTION ACROSS THE DIRECT CURRENT POWER SOURCE; AND, CONTROL CIRCUIT MEANS FOR SEQUENTIALLY APPLYING: A TRIGGER PULSE TO THE FIRST AND THIRD CONTROLLED RECTIFIERS FOR CAUSING CONDUCTION OF EACH IN THE FORWARD DIRECTION: A REVERSE BIAS TO THE FIRST AND THIRD CONTROLLED RECTIFIERS FOR RESTORING THE FORWARD AND REVERSE CURRENT BLOCKING CONDITION OF EACH; A TRIGGER PULSE TO THE SECOND AND FOURTH CONTROLLED RECTIFIERS FOR CAUSING CONDUCTION OF EACH IN THE FORWARD DIRECTION; AND, A REVERSE BIAS TO THE SECOND AND FOURTH CONTROLLED RECTIFIERS FOR RESTORING THE FORWARD AND REVERSE CURRENT BLOCKING CONDITION OF EACH; WHEREBY THE DIRECT CURRENT POWER SOURCE WILL ALTERNATELY BE APPLIED TO THE LOAD IN ONE DIRECTION THROUGH THE FIRST AND THIRD CONTROLLED RECTIFIERS AND IN THE OTHER DIRECTION THROUGH THE SECOND AND FOURTH CONTROLLED RECTIFIERS.