Abstract: A power supply power supply (30) comprising a DC voltage supply, a control unit and a plurality of high voltage channels (33a-33d) is suggested. Each high voltage channel (33) includes an inverter (IKTV), a resonance circuit, a transformer (TR), and a rectifier (RECT). The resonance circuit cooperates with the inverter (INV). The inverter (INV) is formed by a first switching unit and a second switching unit whereby a voltage of a first polarity can be applied to the resonance circuit in a first switching state, whereas a voltage of a second polarity can be applied to the resonance circuit in a second switching state. The switching states can be switched by the control unit in such a manner that in a first mode of an operation for high output power, the output power can be adjusted by changing the switching frequency in the range of the resonance frequency.

Abstract: A power supply power supply (30) comprising a DC voltage supply, a control unit and a plurality of high voltage channels (33a-33d) is suggested. Each high voltage channel (33) includes an inverter (IKTV), a resonance circuit, a transformer (TR), and a rectifier (RECT). The resonance circuit cooperates with the inverter (INV). The inverter (INV) is formed by a first switching unit and a second switching unit whereby a voltage of a first polarity can be applied to the resonance circuit in a first switching state, whereas a voltage of a second polarity can be applied to the resonance circuit in a second switching state. The switching states can be switched by the control unit in such a manner that in a first mode of an operation for high output power, the output power can be adjusted by changing the switching frequency in the range of the resonance frequency.

Abstract: A high-voltage unit comprising at least a high-voltage electrode which carries a high voltage in the operating condition of the high-voltage unit. A measuring divider/resistor arrangement is connected between the high-voltage electrode and a measuring point wherefrom a measuring voltage is derived corresponding to the variation in time of the high voltage. A reduced volume and thus a more compact device is achieved in that a flat measuring electrode is provided which carries the potential of the measuring point and in that the measuring divider/resistor arrangement is positioned between the high-voltage electrode and the measuring electrode so that it is inclined relative to each of these electrodes.

Abstract: An X-ray generator for operating an X-ray tube having parts of the tube connected to ground includes a high-voltage transformer arrangement having distinct secondary windings for producing positive and negative high voltages, for the anode and the cathode, respectively, of the X-ray tube. The unfavorable voltage distribution inherent in the feeding of such an X-ray tube by a high-ohmic generator is removed in a simple manner in that the secondary windings are each associated with a primary winding and that in series with the primary winding for producing the anode voltage an inductance is connected by means of a switching device.