Circuit and procedure for generating a X-ray tube voltage

摘要

The circuit (1) has a HF voltage stage (Gsi) coupled to a voltage converter (Gsu) for providing the HV for operation of the X-ray tube, with a voltage regulator (G RU) comparing the actual X-ray tube voltage (V U(t)) with a required X-ray tube voltage (W U(t)), for providing a first setting value (Y U(t)) for the HF voltage stage. A measuring circuit (7) determines the oscillation current (V I(t)) at the output of the HF voltage stage for comparison with a maximum value (W Imax), for providing a second setting value (Y I(t)) for the HF voltage stage. The setting values are compared for controlling a switching device (8) supplying the smaller setting value to the HF voltage stage. Also included are Independent claims for the following: (a) an X-ray generator; and (b) a method for generating an X-ray tube voltage.