X-ray tube system with voltage and current control means

Claim 1

AN X-RAY TUBE SYSTEM COMPRISING: (A) AN X-RAY TUBE; (B) A VOLTAGE SOURCE; (C) CIRCUIT MEANS CONNECTING SAID X-RAY TUBE TO SAID VOLTAGE SOURCE FOR SUPPLYING AN ENERGIZING VOLTAGE TO SAID X-RAY TUBE; (D) A VARIABLE VOLTAGE MEANS CONNECTED IN CIRCUIT WITH THE VOLTAGE SOURCE IN OPPOSING RELATION TO SAID VOLTAGE SO THAT SAID ENERGIZING VOLTAGE EQUALS THE VOLTAGE SOURCE LESS THE OPPOSING VARIABLE VOLTAGE; (E) FIRST CONTROL MEANS CONNECTED TO SAID CIRCUIT MEANS AND TO SAID VARIABLE VOLTAGE MEANS TO VARY THE OPPOSING VOLTAGE ACCORDING TO VARIATIONS IN THE VOLTAGE SOURCE SO THAT SAID ENERGIZING VOLTAGE IS SUBSTANTIALLY RIPPLE FREE; (F) SECOND CONTROL MEANS CONNECTED TO SAID CIRCUIT MEANS AND TO SAID VARIABLE VOLTAGE MEANS TO ADJUST THE LEVEL OF THE OPPOSING VOLTAGE OF THE VARIABLE VOLTAGE MEANS IN OPPOSITION TO UNSELECTED CHANGES IN THE LEVEL OF THE ENERGIZING VOLTAGE; AND, (G) VOLTAGE ADJUSTMENT CONTROL MEANS CONNECTED TO SAID CIRCUIT MEANS AND TO SAID VARIABLE VOLTAGE MEANS, SAID ADJUSTMENT CONTROL MEANS BEING RESPONSIVE TO CHANGES IN THE LEVEL OF THE OPPOSING VOLTAGE BEYOND A PREDETERMINED ADJUSTMENT RANGE AND ADJUSTING THE LEVEL OF THE ENERGIZING VOLTAGE TO BRING THE LEVEL OF THE NECESSARY OPPOSING VOLTAGE WITHIN SAID PREDETERMINED ADJUSTMENT RANGE WHEREBY SAID VOLTAGE ADJUSTMENT CONTROL MEANS ADJUSTS FOR LARGE UNSELECTED CHANGES IN THE ENERGIZING VOLTAGE LEVEL AND THE SECOND CONTROL MEANS ADJUST FOR SMALL UNSELECTED CHANGES IN ENERGIZING VOLTAGE LEVEL.