Circuit with controlled rectifiers and improved ignition thereof

Claim 1

AN ELECTRIC CIRCUIT PROVIDED WITH CONTROLLED SEMICONDUCTOR RECTIFIER MEANS, IGNITION CIRCUIT MEANS FOR IGNITING SAID CONTROLLED SEMI-CONDUCTOR RECTIFIER MEANS, SAID IGNITION CIRCUIT MEANS DELIVERING A SERIES OF IGNITION IMPULSES AT LEAST DURING A PREDETERMINED IGNITION PERIOD, SAID ELECTRIC CIRCUIT INCLUDING A FULL-WAVE RECTIFIER PROVIDED WITH FOUR RECTIFIERS CONNECTED IN A FULL-WAVE BRIDGE RECTIFICATION CIRCUIT, TWO OF SAID RECTIFIERS INCLUDING SAID CONTROLLED SEMI-CONDUCTOR RECTIFIER MEANS AND ELECTRICALLY CONNECTED TO A COMMON TERMINAL OF A DIRECTCURRENT VOLTAGE OUTLET OF SAID FULL-WAVE RECTIFIER, SAID IGNITION CIRCUIT MEANS INCLUDING A FIRST IGNITION CIRCUIT ELECTRICALLY CONNECTED WITH SAID TWO CONTROLLED SEMI-CONDUCTOR RECTIFIER MEANS FOR DELIVERING AN UNINTERRUPTED SERIES OF SAID IGNITION IMPULSES, THE PULSE REPETITION FREQUENCY OF WHICH LIES AT LEAST ABOVE THE FREQUENCY OF AN ALTERNATINGCURRENT VOLTAGE TO BE RECTIFIED BY A FACTOR OF 3, SAID ELECTRIC CIRCUIT FURTHER INCLUDING A DIRECT-CURRENT TO ALTERNATINGCURRENT INVERTER FOR CONVERTING A DIRECT-CURENT VOLTAGE INTO AN ALTERNATING-CURRENT VOLTAGE, A TRANSFORMER PROVIDED WITH A TRANSFORMER WINDING HAVING A CENTER-TAP, SAID INVERTER INCLUDING RESPECTIVE SEMI-CONDUCTOR RECTIFIER MEANS COUPLED TO EACH TERMINAL OF SAID TRANSFORMER WINDING, THE DIRECT CURRENT VOLTAGE BEING APPLIED TO SAID CENTERTAP AND VIA SAID RESPECTIVE CONTROLLED SEMI-CONDUCTOR RECTIFIER MEANS OF SAID INVERTER TO SAID TERMINALS OF SAID TRANSFORMER WINDING, SAID IGNITION CIRCUIT MEANS FURTHER INCLUDING A SECOND IGNITION CIRCUIT ELECTRICALLY COUPLED WITH BOTH OF SAID CONTROLLED SEMI-CONDUCTOR RECTIFIER MEANS OF SAID INVERTER FOR ALTERNATINGLY SUPPLYING SAID SERIES OF IGNITION IMPULSES, WHEREIN THE ALTERNATION IN THE TRANSMISSION OF SAID SERIES OF IMPULSES CORRESPONDS TO THE DESIRED FREQUENCY OF THE OUTPUT ALTERNATING-CURRENT VOLTAGE.