Series inverter circuit having controlled rectifiers with power diodes in reverse parallel connection

• US 3,120,633 A
• Filed: 02/01/1960
• Issued: 02/04/1964
• Est. Priority Date: 02/01/1960
• Status: Expired due to Term

• Current Assignee: Luther L. Genuit
• Original Assignee: Luther L. Genuit
• Inventors: Genuit, Luther L.
• Application Number:
  US04/005,847
• Time in Patent Office: 1,464 Days
• US Class Current: 363/49
• CPC Class Codes: H02M 7/516 Self-oscillating arrangements
• CPC Class Codes: H02M 7/523 with LC-resonance circuit in the main circuit
• CPC Class Codes: H05B 41/282 with semiconductor devices H05B41/2806, H05B41/288, H05B41/295 take precedence

Claims

1. AN INVERTER CIRCUIT COMPRISING A PAIR OF DIRECT CURRENT INPUT TERMINALS, A CAPACITOR CONNECTED IN CIRCUIT WITH SAID INPUT TERMINALS, A PAIR OF CONTROLLED RECTIFIERS CONNECTED IN SERIES CIRUCIT RELATIONSHIP ACROSS SAID INPUT TERMINALS, A LOAD CIRCUIT HAVING A RESISTIVE PORTION AND AN INDUCTIVE PORTION, MEANS CONNECTING SAID INPUT TERMINALS WITH SAID CONTROLLED RECTIFIERS AND SAID LOAD CIRCUIT TO PROVIDE A CURRENT PATH FOR ENERGIZING SAID LOAD CIRCUIT WITH HALF CYCLES OF CURRENT FLOW OF OPPOSITE DIRECTION, SAID CAPACITOR BEING CHARGED AND DISCHARGED DURING EACH CYCLE, A PAIR OF POWER DIODES CONNECTED IN REVERSE PARALLEL RELATIONSHIP WITH SAID CONTROLLED RECTIFIERS, FIRING CIRCUIT MEANS CONNECTED IN CIRCUIT WITH SAID CONTROLLED RECTIFIERS TO PROVIDE A PULSE OF CURRENT TO ALTERNATELY TRIGGER ONE AND THEN THE OTHER OF SAID CONTROLLED RECTIFIERS, SAID FIRING MEANS PROVIDING A DELAYED CURRENT PULSE TO THE PREVIOUSLY NONCONDUCTING CONTROLLED RECTIFIER TO FIRE IT AFTER A PREDETERMINED DELAY FOLLOWING THE CESSATION OF CURRENT FLOW THROUGH THE OTHER CONTROLLED RECTIFIER, SAID PAIR OF POWER DIODES CARRYING THE MAIN CURRENT FLOW DURING THE COMMUTATION OF SAID CONTROLLED RECTIFIERS.