Abstract: The invention relates to a gantry for an x-ray device. According to the invention at least one screening device used to reduce interactions with electromagnetic disturbance fields is provided for the at least one transmitter for the non-contact power or signal transmission between a stationary part and a rotatable part of the gantry.

Abstract: An X-ray device having an X-ray source, a high voltage generator supplying power to the X-ray tube and an inverter to generate, at the output end, an AC input voltage for the high voltage generator is disclosed. Provision is made therein for a resonance network to be formed between the inverter and the high voltage generator. This allows transmission of the AC input voltage with low power dissipation and low radiation levels. It also achieves spatial separation of the inverter from the high voltage generator and the X-ray source.

Abstract: The invention relates to a gantry for an x-ray device. According to the invention at least one screening device used to reduce interactions with electromagnetic disturbance fields is provided for the at least one transmitter for the non-contact power or signal transmission between a stationary part and a rotatable part of the gantry.

Abstract: An X-ray device having an X-ray source, a high voltage generator supplying power to the X-ray tube and an inverter to generate, at the output end, an AC input voltage for the high voltage generator is disclosed. Provision is made therein for a resonance network to be formed between the inverter and the high voltage generator. This allows transmission of the AC input voltage with low power dissipation and low radiation levels. It also achieves spatial separation of the inverter from the high voltage generator and the X-ray source.

Abstract: An apparatus includes a first, stationary system, in particular a stator, and a second system which is provided for moving relative to the first system, in particular an armature, a first and second electrical reference potentials which are assigned to the first system and the second system, respectively, and a coupler for potential coupling of the two reference potentials. The coupler is used for the potential coupling of a ground of the moving system to a ground of the stationary system in order to ensure a reliable data transmission between the systems. In order to achieve a coupling with a maximal service life and requires minimal maintenance, the coupler has a field coupling component for mechanically contactless potential coupling.

Abstract: The disclosed, embodiments relate to a high-voltage supply (11, 13, 23) for an X-ray device. The X-ray device comprises an X-ray tube (15) and a high voltage generator(1), for generation of the high voltage necessary for operating the X-ray tube (15). The high voltage supply (11, 13, 23) comprises electrically-conducting lines (11, 13), for the connection of the high voltage generator to the X-ray tube (15). Each of the lines (11, 13) comprises one end which may be connected to the high voltage generator (1) and a further end which may be connected to the X-ray tube (15). At least one end of at least one of the lines (11, 13) may be connected to an electrical terminal resistor (39) which may be arranged between the line (11, 13) and the high voltage generator (1), or between the line (11, 13) and the X-ray tube (15).

Abstract: The disclosed embodiments relate to a high-voltage supply (11, 13, 23) for an X-ray device. The X-ray device comprises an X-ray tube (15) and an X-ray generator (1), for generation of the high voltage necessary for operating the X-ray tube (15). The high voltage supply (11, 13, 23) comprises electrically-conducting lines (11, 13), for the connection of the X-ray generator to the X-ray tube (15). Each of the lines (11, 13) comprises one end which may be connected to the X-ray generator (1) and a further end which may be connected to the X-ray tube (15). At least one end of at least one of the lines (11, 13) may be connected to an electrical terminal resistor (39) which may be arranged between the line (11, 13) and the X-ray generator (1), or between the line (11, 13) and the X-ray tube (15).

Abstract: A circuit arrangement for generating an X-ray tube voltage is described, wherein a switching device, connected downstream of a voltage controller (Gsu) and a oscillating current controller (Gri), operable to compare a first controlling variable value (Yu(t)) and a second controlling variable value (Yz(t)) and is operable to send the lesser of the first and second controlling variable values (Yu(t) and Yz(t) onward as a resultant controlling variable value (Y(t)) to the inverse rectifier circuit (Gsi).

Abstract: A circuit arrangement for generating an x-ray tube voltage is described, comprises an inverse rectifier circuit (Gsi) for generating a high-frequency alternating voltage, a high-voltage generator (Gsu) for converting the high-frequency inverse rectifier into a high voltage for the x-ray tube, and a voltage controller (GRU), which based on a deviation of an actual x-ray tube voltage (VU(t)) from a set-point x-ray tube voltage (WU(t)) generates a first controlling variable value (YU(t)) for a controlling variable for the inverse rectifier circuit (Gsi).

Abstract: As apparatus components, a computed tomography apparatus has at least a rotating X-ray generator and an operating unit, between which data can be exchanged wirelessly via a radio link on the basis of radio waves or microwaves. A rotating X-ray generator device of a computed tomography apparatus has a generator unit and a transmission and/or reception device allocated thereto for transmitting and/or receiving electromagnetic broadcast signals. This allows a wireless data transmission while avoiding wiper rings. The bluetooth standard or a GSM or UMTS standard can be employed as standards.

Abstract: An arbitrary voltage distribution can be achieved in a high-voltage generator which supplied an X-ray tube having a metallic central part, wherein the anode voltage and the cathode voltage are generated in the high-voltage generator by two series-connected high-voltage rectifiers with respective preceding high-voltage transformers, whereby the high-voltage transformers being supplied by an inverse rectifier. A clocked switch, via which the average value of the anode current can be set and matched to the cathode current, lies in the lead to the high-voltage transformer at the anode side.

Abstract: In a high-voltage generator with an X-ray tube having a metallic middle part, unfavorable effects due to a part of the current flowing off via the grounded metallic middle part is avoided by the overall voltage across the X-ray tube being produced by one inverter and the cathode voltage of the X-ray tube is generated by another inverter, each having a high-voltage rectifier connected thereto. The respective voltages are regulated by controlling the respective inverters.

Abstract: A three-phase rectifier circuit for a capacitive load wherein only small current harmonics occur has, at the rectifier input, an inductance and a capacitor arrangement that compensates the reactive power of the inductance. The capacitors can be individually switchable, for the regulation of the rectifier output voltage.

Abstract: An x-ray generator wherein the tube current is kept constant independently of the drop in the cathode temperature after the radiation is switched on has a control circuit for the tube filament current in which a correction value that corresponds to the drop in the tube current given constant filament current during the radiation phase due to the drop in temperature of the cathode is superimposed on the rated value of the filament current at the beginning of radiation.

Abstract: A high-frequency high-voltage generator is provided for x-ray technology that automatically adapts to all load instances and to the coupling network. The inverter is driven dependent on the zero-axis crossing in a series resonant circuit. The capacitor of this series resonant circuit is bridged by an inductance, forming a parallel branch and the control signal for the inverter is acquired from the time delay between the zero-axis crossings in the series resonant circuit in the parallel branch.

Abstract: An x-ray generator has a power rectifier connected to a high-frequency inverse rectifier and having a high-voltage transformer supplied by the rectifier. In order to achieve low losses in the operation of the high-voltage transformer with a low internal capacitance, the electrical windings of the high-voltage transformer are provided with an insulation having a thickness which is greater than the thickness which would be required solely to accommodate the maximum voltage load.