CIRCUIT ARRANGEMENT FOR X-RAY TUBE VOLTAGE GENERATION

PROBLEM TO BE SOLVED: To attain high-speed adjustment of a circuit arrangement for x-ray tube voltage generation without exceeding maximum allowable oscillating current. SOLUTION: This circuit arrangement includes a voltage regulator GRUfor generating a first manipulated variable value YU(t) for an inverter circuit Gsibased on a deviation from x-ray tube target voltage WU(t) of the x-ray tube voltage VU(t), a measurement circuit 7 of the oscillating current of high frequency AC voltage provided to the output end of the inverter circuit Gsi, an oscillating current regulator GRIfor generating a second manipulated variable value YI(t) based on a deviation from a predetermined oscillating current maximum value WImaxof the determined oscillating current actual value VI(t), and a switching device 8 connected subsequent to the voltage regulator GRUand the oscillating current regulator GRI, comparing the first manipulated variable value YU(t) with the second manipulated variable value YI(t), and communicating only the smaller manipulated variable value to the inverter circuit Gsias a resulting manipulated variable value Y(t). COPYRIGHT: (C)2004,JPO