Hegulation of current supplied by the rectified output from a three phase a.-c. source

Claim 1

AN ARRANGEMENT FOR REGULATING THE RECTIFIED D.-C. OUTPUT SUPPLIED TO A LOAD BY A THREE PHASE TRANSFORMER RECTIFIER HAVING RECTIFIER MEANS AND A THREE LEG TRANSFORMER INCLUDING A SECONDARY AND PRIMARY WHICH OBTAINS ITS INPUT FROM A THREE PHASE A.-C. POWER SOURCE, COMPRISING IN COMBINATION; SENSING MEANS DISPOSED BETWEEN SAID LOAD AND RECTIFIER MEANS CONNECTED TO SAID SECONDARY SENSING A CHANGING VOLTAGE CAUSED BY SAID LOAD; A FEEDBACK LOOP BETWEEN SAID SENSING MEANS AND ONE LEG OF SAID THREE LEG TRANSFORMER; THROTTLE MEANS IN SAID FEEDBACK LOOP AND COUPLED TO SAID ONE LEG RESPONSIVE TO SAID FEEDBACK LOOP ACTING AS A VALVE BETWEEN SAID ONE LEG AND SAID POWER SOURCE; AND, CONTROL MEANS IN SAID FEEDBACK LOOP COUPLED TO SAID LOAD AND SENSING MEANS WHICH, IN ACCORDANCE WITH THE INPUT SIGNAL FROM SAID LOAD AND SENSING MEANS WILL REGULATE SAID THROTTLE MEANS ACCORDING TO A PRESET PATTERN.