Phase shift circuit

Claim 1

AN ELECTRIC RECTIFIER CIRCUIT COMPRISING: A TRANSFORMER INCLUDING A PLURALITY OF SECONDARY WINDINGS EACH WINDING HAVING FIRST AND SECOND SPACED MAIN TAPS AND FIRST AND SECOND SPACED AUXILIARY TAPS WITH ONE OF SAID MAIN TAPS BEING INTERPOSED BETWEEN SAID FIRST AND SECOND AUXIALIARY TAPS; A PLURALITY OF PHASE SHIFTING NETWORKS EACH INCLUDING A FIRST AND SECOND IMPEDANCE SERIALLY CONNECTED, EACH SAID FIRST IMPEDANC E BEING CONNECTED TO A RESPECTIVE ONE OF SAID FIRST AUXILIARY TAPS AND EACH SAID SECOND IMPEDANCE BEING CONNECTED TO A RESPECTIVE ONE OF SAID SECOND AUXILIARY TAPS; A PLURALITY OF THYRATRONS EACH HAVING AN ELECTRODES BEING COMMONLY CONNECTED TO A SAID ANODE ELECTRODES BEING COMMONLY CONNECTED TO A POINT OF LOW REFERENCE POTENTIAL, EACH CATHODE ELECTRODE BEING CONNECTED TO A RESPECTIVE ONE OF SAID FIRST MAIN TAPS; A PLURALITY OF OHIMIC CONNECTIONS EACH CONNECTING THE COMMON POINT BETWEEN SAID FIRST AND SECOND IMPEDANCE TO A RESPONSIVE ONE OF SAID CONTROL GRIDS; A HIGH VOLTAGE TERMINAL; AND CIRCUIT MEANS OPERATIVELY CONNECTING EACH OF SAID SECOND MAIN TAPS TO SAID HIGH VOLTAGE TERMINAL.