摘要:
In a high-voltage power device for X-ray tubes, a single magnetic circuit is used to couple a primary circuit to two separate secondary circuits. Each of these secondary circuits comprises a series of secondary windings, each connected to a rectifier-doubler circuit constituted by diodes, borne by a printed circuit, and by capacitors, borne in a cellular compartment. This arrangement makes it possible notably to double the output high voltage or to obtain perfectly symmetrical high voltages in a device that occupies less space.
摘要:
A high-voltage connector, in particular for feeding the cathode, two cathode filaments, and two gates of an X-ray tube, wherein the connector comprises five connections, one for power supplying the cathode, two for power supplying the cathode filaments, and the last two for power supplying the two gates, the connections being disposed in such a manner that the distance between the cathode connection and a gate connection and the distance between the two gate connections are greater than the distance between the cathode connection and a cathode filament connection.
摘要:
The disclosure relates to high-voltage change-over switches that are used to apply high voltage alternately to two X-ray tubes. Each of the four switch devices constituting a change-over switch includes a fixed contact element connected to an input terminal of the high voltage and a movable contact element connected to an output terminal by a curved, flexible strip, the shifting of which is obtained by a hinged arm that is actuated by an insulator sleeve surrounding the strip. The rotation of the sleeve in one direction causes contact through a hole in the wall of the sleeve while rotation in the reverse direction causes the contact elements to move away from each other and gives rise to the interposition of the insulator wall between the contact elements at a distance. The disclosed device can be applied to radiology installations.
摘要:
The invention relates to high-voltage power supplies for X-ray tubes in radiological apparatuses. The invention lies in the fact that the secondary windings of the transformer, the capacitors, and the diodes of the rectifier and voltage-doubler circuits, are all disposed in an enclosure made from two half-shells, whereas the primary winding and the magnetic circuit are disposed outside the enclosure.
摘要:
An X-ray tube is enclosed in a casing containing a cooling fluid. At least one terminal part of the casing is elongated to house a high-voltage power supply device comprising a high-voltage output terminal connected to the anode and/or the cathode and low-voltage input terminals connected to low-voltage contact elements for connection to a low-voltage supply source that is located outside the casing.
摘要:
A change-over switch comprises four input terminals connected in pairs to one of the two poles +HT and -HT of a high voltage generator and four output terminals connected in pairs to one of two X-ray tubes. It includes two identical half change-over switches with coupled control, each half change-over switch comprising two contact devices, each constituted by a fixed contact element and a movable contact element between which there is interposed an insulation device when the electrical contact is open. The movable contact elements and the insulation device of each half change-over switch are connected to one another to have combined movements.
摘要:
The HT power supply unit modular support according to the invention comprises functional housings intended to accommodate the functional elements of the power supply unit, the insulating walls of which are formed by two protruding walls (2, 3) having overlapping complementary inclined surfaces (5, 6). Application to HT power supply units for X-ray sources.
摘要:
In an electrical device for supplying x-ray tubes, the primary and secondary windings of the transformer are wound on circular coil forms which are adapted to fit within two half-shells. The half-shells are constituted by a recessed annular structure in which capacitors are housed. The output terminals of the secondary windings are placed on one side in order to be connected to the capacitors and to diodes over very short distances.
摘要:
A plug for the connection of a high-voltage cable. The plug comprises a jacket configured to be inserted into a connection receptacle of a high-voltage electrical appliance in order to connect the cable to the appliance, wherein the jacket includes a recess created therein, and a sleeve positioned around the jacket to form an insulating interface between the jacket and the receptacle, with the sleeve being located in the recess of the jacket and configured to hold the sleeve on the jacket.
摘要:
A voltage divider of a voltage generator is provided. The divider comprises an input terminal opposite an output terminal, a measurement resistor electrically connected in series between the input terminal and the output terminal, a footer resistor electrically connected in parallel between the output terminal and electrical ground, and a footer capacitor electrically connected in parallel between the output terminal and electrical ground. A value of the footer resistor is at least a magnitude smaller relative to a value the measurement resistor. The divider further includes a reactive bypass component having a first end electrically connected in parallel to the measurement resistor.