EP0430755A1 - Hochspannungsanlage für Röntgenröhre mit in Sekundärkreis integriertem Kühlbehälter - Google Patents

Hochspannungsanlage für Röntgenröhre mit in Sekundärkreis integriertem Kühlbehälter Download PDF

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Publication number
EP0430755A1
EP0430755A1 EP90403252A EP90403252A EP0430755A1 EP 0430755 A1 EP0430755 A1 EP 0430755A1 EP 90403252 A EP90403252 A EP 90403252A EP 90403252 A EP90403252 A EP 90403252A EP 0430755 A1 EP0430755 A1 EP 0430755A1
Authority
EP
European Patent Office
Prior art keywords
enclosure
supply device
circuit
feeding device
insulating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP90403252A
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English (en)
French (fr)
Other versions
EP0430755B1 (de
Inventor
Hans Jedlitschka
Jacques Sireul
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric CGR SA
Original Assignee
General Electric CGR SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by General Electric CGR SA filed Critical General Electric CGR SA
Publication of EP0430755A1 publication Critical patent/EP0430755A1/de
Application granted granted Critical
Publication of EP0430755B1 publication Critical patent/EP0430755B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05G—X-RAY TECHNIQUE
    • H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
    • H05G1/02—Constructional details
    • H05G1/04—Mounting the X-ray tube within a closed housing
    • H05G1/06—X-ray tube and at least part of the power supply apparatus being mounted within the same housing
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05G—X-RAY TECHNIQUE
    • H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
    • H05G1/02—Constructional details
    • H05G1/025—Means for cooling the X-ray tube or the generator
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05G—X-RAY TECHNIQUE
    • H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
    • H05G1/08—Electrical details
    • H05G1/10—Power supply arrangements for feeding the X-ray tube

Definitions

  • the invention relates to electrical devices which are used to power X-ray tubes and, more particularly in such devices, means for supporting and cooling the various elements of electrical circuits.
  • An X-ray tube includes a filament type cathode which emits an electron beam towards an anode or anti-cathode.
  • the anode is made of a material such as tungsten or molybdenum which emits X-rays when it is bombarded by the electron beam from the cathode.
  • the electrons are accelerated by an intense electric field created between the cathode and the anode.
  • the anode is brought to a positive potential of several tens of kilovolts relative to the cathode, this potential being able to exceed one hundred kilovolts and reach one hundred and forty kilovolts.
  • Such voltages are supplied by so-called high voltage supply devices which include, as shown in FIG. 1, a transformer 10 which is connected to voltage rectifier-doubler circuits 11. More specifically, the transformer 10 comprises a single winding primary 12 to which an alternating voltage is applied and a secondary circuit 13 which is connected to the rectifier-doubling circuits 11.
  • Each rectifier-doubling circuit 11 consists, in a conventional manner, in a secondary winding 14, two diodes D1 and D2 and two capacitors C1 and C2 which are connected together according to the diagram in FIG. 1.
  • Each voltage rectifier-doubler circuit is connected to the next one so that their output voltages add up, which makes it possible to obtain a very high voltage on the last doubler circuit of the assembly. .
  • the transformer comprises a primary winding 12 and twelve secondary windings S1 to S12 of which the windings S1, S5, S6 and S12 have been shown.
  • the transformer comprises twenty-four identical rectifying diodes D1 to D24 of which it has been shown that the elements D1, D2, D3 ... D12, D13, D14 ... D22, D23, D24.
  • Each secondary winding S1 to S12 has two output terminals. All the output terminals bear the references B1 to B24, only the terminals B1, B2, B3 ... B5, B6, B7, B8 ... B23, B24 having been shown.
  • the common point of the capacitor C1 and the diode D1 constitutes the high voltage output terminal HT through a resistor R while the common point of the capacitor C24 and the diode D24 constitutes the ground output terminal with which a spark gap 9 is associated.
  • the HT output terminal is connected to a measuring device (not shown) connected to point M via a resistor R ′ and a variable capacitor C ′.
  • the point M is connected to ground by a spark gap 9 ′.
  • each rectifier-doubler circuit has an output voltage of six kilovolts so that at the output of the twelfth rectifier-doubler circuit, the voltage is seventy-two kilovolts.
  • X-ray tubes are used more and more in impulse mode according to increasingly higher repetition frequencies.
  • the performance of the circuit of FIG. 1 is limited by the parasitic capacitances and inductors of the conductors and of the transformer windings, the values of which are difficult to know and to compensate for.
  • the secondary circuit in the form of concentric windings, only the parasitic capacitance between the first secondary winding and the mass has an influence because the other parasitic capacitances between the secondary windings do not intervene because they are at an alternating voltage.
  • the invention described in the aforementioned patent application first provides for making secondary windings whose similar output terminals of odd rank B1, B3 ... B23, are arranged on a first lateral side of the windings while the output terminals of even rank B2, B4 ... B24 are arranged on the other or second lateral side of the secondary windings.
  • the device comprises two half-shells 20 and 21 in which are provided housings for placing the primary winding 12, the secondary windings S1 to S12, the capacitors C1 to C24 and the diodes D1 to D24.
  • each half-shell 20 (or 21) comprises three annular compartments 22, 23 and 24 (or 26, 27, 28) around a cylindrical central part 25 (or 29).
  • the first annular compartment 22 (or 26) is at the periphery of the central part 25 (or 29) while the second annular compartment 23 (or 27) is at the external periphery of the first compartment 22 (or 26).
  • the third compartment 24 (or 29) is arranged laterally with respect to the first two 22 and 23 (or 26 and 27) and is separated from it by partitions 30 and 31 respectively (or 32 and 33) pierced with orifices.
  • the central parts 25 and 29 are provided for housing, in particular, the primary winding 12 and a branch 34 of the magnetic circuit 35 of the transformer 10.
  • the first annular compartments 22 and 26 are provided for housing the secondary windings 13 which are wound so concentric on a mandrel 36.
  • the external periphery of the mandrel 36 is closed by a cover constituted by a cylindrical ring 37.
  • the mandrel 36 and its cover 37 fit into the compartments 22 and 26.
  • the second annular compartments 23 and 27 comprise twenty-four cells A1, A2, A3 ... A14, A15, A16..A24 which are designed to house the twenty-four capacitors C1 respectively to C24.
  • the third compartment 24 of the half-shell 20 is provided for housing the diodes D1 to D24 and making their connections to each other, with the capacitors C1 to C24 and to certain output terminals of the secondary windings S1 to S12. This arrangement will be described below in relation to FIG. 4.
  • the third compartment 28 of the half-shell 21 is provided for making the various connections between certain output terminals of the secondary windings S1 to S12 and the capacitors C1 to C24 as will be described below in relation to FIG. 5.
  • Each annular compartment 24 or 28 is closed respectively by an annular cover 40 or 41 which fits onto the outer periphery of the associated compartment.
  • each half-shell 20 (or 21) has its periphery interrupted by a notch 42 (or 43) and it is the same for each cover 40 (or 41).
  • a notch allows the passage of a branch of said magnetic circuit.
  • the diodes D1 to D24 are arranged on a printed circuit in the form of an annular plate sector which makes their connections with one another, with one end of the capacitors C1 to C24 and with the output terminals B1, B3. ..B23 in accordance with the electrical diagram of FIG. 1.
  • the diode D1 has its cathode which is connected to the terminal B1 of the winding S1 and its anode which is connected to a of the ends of the capacitor C1.
  • terminal B1 is connected to the anode of diode D2, the cathode of which is connected, on the one hand, to the anode of diode D3 and, on the other hand, at one end of the capacitors C2 and C3, and to the latter by a printed conductor CI1.
  • the other printed conductors CI2 to CI11 connect the other common points of the diodes equivalent to D2, D3 to the capacitors equivalent to C3.
  • Figure 5 is a top view, cover 41 partially broken away, on the other side of the secondary windings.
  • connection conductors CC5 to CC10 between the terminals B6, B8, and B10 and the associated capacitors (C5, C6), (C7, C8) and (C9, C10).
  • these conductors CC5 to CC10 can be produced in the form of conductors of a printed circuit analogous to the printed circuit 38 carrying the diodes or in the form of bars.
  • FIG. 5 also shows three of the four branches of the magnetic circuit 35, one of which is disposed in the notch 43.
  • the various elements which have just been described in relation to FIGS. 1 to 5 are assembled by interlocking into each other and held together with each other by assembly elements so as to obtain the assembly shown in partial section. in FIG. 6.
  • the assembly elements, not shown in FIGS. 1 to 5, are constituted by threaded tie rods and nuts and plates for supporting and holding the various branches of the magnetic circuit 35.
  • plates 55 and 56 (FIG. 6) these plates being held respectively against the covers 41 and 40 by threaded tie rods and nuts such as those bearing the references 57, 58 and 59 in FIGS. 2 and 6.
  • These plates 55 and 56 are provided to each house and hold a branch of the magnetic circuit.
  • the plate 55 supports the branch 60 of the U-shaped part while the plate 56 supports the branch 46 of the magnetic circuit which closes the opening of the U.
  • the device of FIG. 6 is placed in an enclosure 61 (FIG. 7) filled with an insulating cooling fluid.
  • a support plate 62 which constitutes the cover of the enclosure 61.
  • the mounting on the support plate 62 is carried out by means of two feet 63 and 64 which cooperate with the plates of holding 55 and 56 by fitting into housings (not shown) provided inside. These feet 63 and 64 are pierced with holes, such as that referenced 65, for the passage of screws (not shown) which are screwed into a thread in the cover 62.
  • the cover 62 also supports an insulating pad 66 which supports the high voltage output terminal of the supply device.
  • the other electrical terminals of the supply device have not been shown in this figure 7.
  • the enclosure 61 must be large enough to contain a large volume of coolant, approximately 15 to 20 liters, which volume leads to a high-voltage block assembly. quite bulky.
  • the object of the present invention is therefore to produce a supply device for an X-ray tube of the type described in the aforementioned patent application, in which the enclosure containing the coolant is of reduced dimensions so as to obtain an assembly more compact and lighter.
  • the invention proposes to produce a high voltage block for an X-ray tube in which the enclosure containing the cooling and insulating medium contains only the secondary circuit, the primary circuit and the magnetic circuit being arranged outside. of said enclosure.
  • the invention relates to a high-voltage supply device for an X-ray tube comprising a transformer which comprises at least one primary winding, a plurality of secondary windings and a magnetic circuit, the two output terminals of each of said secondary windings being connected.
  • a voltage rectifier-doubler circuit which consists of two diodes and two filtering capacitors, said rectifier-doubler circuits being connected together so that their output voltages add up, the primary and secondary windings of the transformer being produced on concentric coils, the output terminals of said secondary windings being distributed on each lateral side of said coils, the capacitors being arranged on the external periphery of the coils, and the diodes being arranged on a lateral side of said coils, characterized in that the windings secondary of the transformat eur, the capacitors and the diodes are arranged in a closed enclosure which is filled with an insulating and cooling medium, the primary winding and the magnetic circuit being arranged outside of said enclosure.
  • This closed enclosure is produced using two half-shells which have cells to set up and maintain the various elements of the secondary circuit as well as other elements which are connected to high voltages such as the transformer (s) of the supply circuit for the cathode filament (s).
  • Each half-shell has opposite two tunnels which pass right through them and which serve as support, on the inside of the enclosure, for the secondary windings and, on the outside of the enclosure, for the primary winding and magnetic circuit.
  • FIGS. 1 to 7 which have been used in the preamble to describe a high voltage supply device for x-ray tubes according to the prior art, will not be described again, but they nevertheless form an integral part of the description of the invention.
  • the invention with the exception of FIG. 7, as regards the particular arrangement of the electric and magnetic elements and of the voltage doubling circuits of the transformer.
  • the elements of Figure 8 identical or similar to those of Figures 1 to 6 have the same references.
  • the two half-shells 20 and 21 of the embodiment of Figures 2 to 6 have been combined into a single shell which has been referenced (20, 21) in Figure 8.
  • the invention is based on the observation that the energy dissipated in a feeder for an X-ray tube is due for a first third approximately to the primary circuit, approximately a second third to the circuit secondary and about a third to the magnetic circuit but that the insulation problems due to high voltage only exist for the elements of the secondary circuit. For this reason, it is necessary to use a refrigerating medium which is also a very good insulator, a quality which is not required to isolate the elements of the primary and magnetic circuits which can therefore remain in the open air.
  • the invention relates to a feed device for an X-ray tube in which only the elements of the secondary circuit are arranged in a tank 80 filled with a cooling and insulating medium, the tank being shaped to serve as a support inside. elements of the secondary circuit and outside the support of the elements of the primary and magnetic circuits.
  • the tank 80 comprises two parts in half-shells 81 and 81 ′ which are assembled together using tie rods (not shown) passing through holes, such as those referenced 82 and 82 ′, drilled respectively in the thickness of the half-shells 81 and 81 ′.
  • a seal is provided to seal the tank after assembly of the two half-shells.
  • the interior of each half-shell 81 and 81 ′ is shaped in substantially the same way to serve as mounting support for a certain number of elements, in particular those of the secondary circuit.
  • each half-shell 81 or 81 ′ has a bottom wall 83 or 83 ′ and side walls 84 or 84 ′, 85 or 85 ′, 86 or 86 ′, 87 or 87 ′.
  • Each bottom wall 83 or 83 ′ is pierced, substantially in the middle, with a hole 88 or 88 ′, to make a tunnel 89 or 89 ′ which passes through each half-shell 81 or 81 ′.
  • Circular ends inside the tunnels 89, 89 ′ abut one on the other during the assembly of the two half-shells by means of a seal not shown.
  • Each half-shell has a notch 90 or 90 ′ in the shape of a letter L, the vertical arm of which is located on the bottom wall 83 or 83 ′ while the horizontal arm is situated on the side wall 87 or 87 ′.
  • the vertical arm has a depth less than that of the thickness of the half-shell and the horizontal arm has a depth less than the distance from the tunnel to the side wall 87 or 87 ′.
  • each half-shell has cells to allow the establishment and maintenance of the elements of the secondary circuit as well as other elements.
  • a first cell 91 or 91 ′ is provided around the tunnel 89 or 89 ′ for the support and the maintenance of the secondary windings 13 and of the shell (20, 21) containing the capacitors, the diodes and the circuits of connection between these different elements carried by printed circuits in the shape of a horseshoe such as the shell (20, 21).
  • a second cell 92, arranged in the half-shell 81 and a third cell 92 ′, arranged in the half-shell 81 ′, are used to set up, respectively, the high-voltage connectors 93 and 93 ′.
  • These connectors 93 and 93 ′ are each produced in a conventional manner, by a sleeve, one closed end of which carries the connection pads located in the cell near the output terminal of the secondary winding, and the open end of which serves to passage of the output conductors via a male plug not shown in Figure 8.
  • the sleeve is hermetically sealed in a orifice in the side wall 85 or 85 ′ using a gasket 94 or 94 ′ and a plate 95 or 95 ′ screwed to the side wall.
  • a fourth cell 96 arranged in the shell 81, allows the establishment of a vase 97 filled with air to absorb the expansions of the insulating and cooling medium.
  • the interior of this expansion vessel communicates with the exterior of the tank by a conduit 98.
  • a fifth cell 96 ′ disposed in the half-shell 81 ′, allows the installation of an electrical circuit 99 for measuring voltage.
  • This electric circuit 99 consists, as indicated in relation to the description of FIG. 1, of a resistor R ′ and of a variable capacitor C ′ in parallel and of a spark gap 9 ′.
  • a sixth cell 100 in the half-shell 81 and a seventh cell 100 ′ in the half-shell 81 ′ are provided for positioning and maintaining the transformers 101 and 101 ′ respectively of the filament supply circuits of the cathode of the tube X-ray.
  • two orifices 104 and 104 ′ are provided, drilled in the side walls 85 and 85 ′ respectively and provided with plugs 105 and 105 ′.
  • the primary winding 12 is disposed inside the tunnel 89, 89 ′, that is to say on the side outside the enclosure 80, while the branch 34 of the magnetic circuit 35 passes through the tunnel 89, 89 ′ Inside the primary winding 12.
  • the branch 60 is placed in the vertical part of the notch 90 and the branch 44 in the horizontal part of said notch.
  • the fourth branch 46 is placed in the vertical part of the notch 90 ′ at the ends of the branches 34 and 44.
  • the primary winding can be supported by the magnetic circuit itself.
  • plates such as that referenced 106, associated with the half-shell 81, which are fixed to the bottom walls 83 and 83 ′. These plates serve as support for connection pads 107 of the primary winding.
  • the plate 106 can also serve as a support for a fan 108 or a pump for cooling the primary winding and the magnetic circuit by effecting a forced and rapid flow of air or a refrigerant fluid such as a gas. inside the tunnel (89, 89 ′).
  • the two half-shells 81 and 81 ′ of the enclosure 80 are made of an insulating material made of plastic, for example.
  • the outer wall of each half-shell 81 and 81 ′ is coated with a metal casing or a conductive layer which is produced so as not to short-circuit the secondary winding disposed inside the half-shells.
  • the metallic envelope or the conductive layer are connected to the ground potential.
  • the insulating and cooling fluid with which the enclosure 80 is filled can be produced by an insulating and curable resin which, in combination with the two half-shells 81 and 81 ′, forms the encapsulation mold for the elements which they contain. By operating in this way, it is not necessary to use, during manufacture, an encapsulation mold whose assembly and disassembly are long.
  • the invention has been described in relation to a particular embodiment in which only the enclosure 80 was filled with an insulating and cooling liquid, the outside of the enclosure being in the open air. However, nothing prevents the enclosure 80 and the elements it supports from being placed in a tank, similar to the tank 61 in FIG. 7, which would be filled with a refrigerant. Such an arrangement applies as well to the case of an enclosure 80 filled with an insulating and cooling liquid with or without circulation of said liquid as to that of an enclosure 80 filled with a resin as indicated above.
  • the high voltage block according to the invention has the following advantages: - It does not include a metal tank but an enclosure made of insulating material coated with a conductive envelope or a conductive layer, hence a reduction in the manufacturing cost; - the volume and weight of the high-voltage block have been significantly reduced by a reduction in the volume of the insulating and cooling liquid and by the use of an enclosure 80 made of insulating material such as a plastic material; - the calories released by the electrical and magnetic elements of the primary and secondary circuits can be removed by forced or non-forced circulation of a refrigerant; this coolant can be different depending on whether it is the secondary circuit or the primary circuit, which allows specific adaptation.

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EP90403252A 1989-11-24 1990-11-16 Hochspannungsanlage für Röntgenröhre mit in Sekundärkreis integriertem Kühlbehälter Expired - Lifetime EP0430755B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8915509A FR2655231B1 (fr) 1989-11-24 1989-11-24 Bloc haute tension pour tube a rayons x avec cuve de refroidissement integree au circuit secondaire.
FR8915509 1989-11-24

Publications (2)

Publication Number Publication Date
EP0430755A1 true EP0430755A1 (de) 1991-06-05
EP0430755B1 EP0430755B1 (de) 1994-10-05

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Family Applications (1)

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EP90403252A Expired - Lifetime EP0430755B1 (de) 1989-11-24 1990-11-16 Hochspannungsanlage für Röntgenröhre mit in Sekundärkreis integriertem Kühlbehälter

Country Status (4)

Country Link
US (1) US5060253A (de)
EP (1) EP0430755B1 (de)
DE (1) DE69013123T2 (de)
FR (1) FR2655231B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2680939A1 (fr) * 1991-09-03 1993-03-05 Gen Electric Cgr Dispositif et bloc d'alimentation haute tension pour tube a rayons x.
FR2700657A1 (fr) * 1993-01-15 1994-07-22 Gen Electric Cgr Ensemble radiogène.
EP0909012A1 (de) * 1997-10-09 1999-04-14 Ge Medical Systems Sa Modulare Tragkonstruktion für die Funktionselementen einer Hochspannungsversorgungseinheit und derart gefertigte Einheit

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Publication number Priority date Publication date Assignee Title
FR2672726B1 (fr) * 1991-02-08 1996-09-13 Gen Electric Cgr Commutateur haute tension a mouvement lineaire.
FR2672727B1 (fr) * 1991-02-08 1993-04-16 Gen Electric Cgr Dispositif interrupteur haute tension et commutateur haute tension.
FR2680938B1 (fr) * 1991-09-03 1993-11-26 General Electric Cgr Sa Bloc radiogene avec dispositif d'alimentation haute tension integre dans la gaine.
JPH05176540A (ja) * 1991-12-25 1993-07-13 Toshiba Corp 高電圧発生装置
US5231564A (en) * 1992-03-30 1993-07-27 Lorad Corporation Power supply for producing excitation voltage for an x-ray tube filament
US5335161A (en) * 1992-03-30 1994-08-02 Lorad Corporation High voltage multipliers and filament transformers for portable X-ray inspection units
TWI287950B (en) * 2003-11-28 2007-10-01 Kobe Steel Ltd High-voltage generator and accelerator using same
DK1887840T3 (da) * 2006-08-08 2009-09-21 Bosello High Technology S R L Röntgenapparat og tilknyttet spændingsgenerator
US9281156B2 (en) 2013-03-15 2016-03-08 Thermo Scientific Portable Analytical Instruments Inc. Volumetrically efficient miniature X-ray system
EP3102007B1 (de) * 2014-01-28 2019-01-09 Sociedad Española De Electromedicina Y Calidad, S. A. Hochspannungs-, hochfrequenz-, hochleistungstransformator
DE102015213810B4 (de) * 2015-07-22 2021-11-25 Siemens Healthcare Gmbh Hochspannungszuführung für einen Röntgenstrahler
CN115023016B (zh) * 2022-05-27 2023-07-28 海玮电子科技(上海)有限公司 一种用于高压油箱的绝缘组件及高压油箱

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US3510748A (en) * 1967-07-08 1970-05-05 Nissan Electric Co Ltd Simplified polarity reversal system for d.c. high voltage generator
US3541424A (en) * 1969-05-19 1970-11-17 Sumitomo Electric Industries High voltage generating device
FR2239040A1 (en) * 1973-07-26 1975-02-21 Pierson Gerald HV d.c. generator for electrostatic painting - has series of bridge rectifiers connected to secondary windings
US3971946A (en) * 1974-12-12 1976-07-27 American Radiologic Systems Inc. X-ray apparatus with improved housing for components
EP0003946A1 (de) * 1978-02-22 1979-09-05 Balteau S.A. Kompakte Röntgeneinrichtung
US4338657A (en) * 1974-05-21 1982-07-06 Lisin Vladimir N High-voltage transformer-rectifier device
US4694480A (en) * 1985-07-30 1987-09-15 Kevex Corporation Hand held precision X-ray source
EP0381580A1 (de) * 1989-02-02 1990-08-08 General Electric Cgr S.A. Anordnung zur Hochspannungsversorgung einer Röntgenröhre

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JPS5713972A (en) * 1980-06-27 1982-01-25 Morita Mfg Co Ltd Dc high voltage generator

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US3510748A (en) * 1967-07-08 1970-05-05 Nissan Electric Co Ltd Simplified polarity reversal system for d.c. high voltage generator
US3541424A (en) * 1969-05-19 1970-11-17 Sumitomo Electric Industries High voltage generating device
FR2239040A1 (en) * 1973-07-26 1975-02-21 Pierson Gerald HV d.c. generator for electrostatic painting - has series of bridge rectifiers connected to secondary windings
US4338657A (en) * 1974-05-21 1982-07-06 Lisin Vladimir N High-voltage transformer-rectifier device
US3971946A (en) * 1974-12-12 1976-07-27 American Radiologic Systems Inc. X-ray apparatus with improved housing for components
EP0003946A1 (de) * 1978-02-22 1979-09-05 Balteau S.A. Kompakte Röntgeneinrichtung
US4694480A (en) * 1985-07-30 1987-09-15 Kevex Corporation Hand held precision X-ray source
EP0381580A1 (de) * 1989-02-02 1990-08-08 General Electric Cgr S.A. Anordnung zur Hochspannungsversorgung einer Röntgenröhre

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2680939A1 (fr) * 1991-09-03 1993-03-05 Gen Electric Cgr Dispositif et bloc d'alimentation haute tension pour tube a rayons x.
EP0531189A1 (de) * 1991-09-03 1993-03-10 General Electric Cgr S.A. Vorrichtung und Hochspannungsversorgungseinheit für eine Röntgenröhre
US5257304A (en) * 1991-09-03 1993-10-26 General Electric Cgr S.A. High-voltage power device and power pack for X-ray tube
FR2700657A1 (fr) * 1993-01-15 1994-07-22 Gen Electric Cgr Ensemble radiogène.
US5384821A (en) * 1993-01-15 1995-01-24 Ge Medical Systems Radiogenic unit
EP0909012A1 (de) * 1997-10-09 1999-04-14 Ge Medical Systems Sa Modulare Tragkonstruktion für die Funktionselementen einer Hochspannungsversorgungseinheit und derart gefertigte Einheit
FR2769787A1 (fr) * 1997-10-09 1999-04-16 Ge Medical Syst Sa Support modulaire pour les elements fonctionnels d'un bloc d'alimentation haute-tension et bloc ainsi obtenu
US6115236A (en) * 1997-10-09 2000-09-05 Ge Medical Systems S.A. Modular support for the functional elements of a high-voltage power supply unit

Also Published As

Publication number Publication date
US5060253A (en) 1991-10-22
EP0430755B1 (de) 1994-10-05
FR2655231B1 (fr) 1992-02-14
FR2655231A1 (fr) 1991-05-31
DE69013123D1 (de) 1994-11-10
DE69013123T2 (de) 1995-05-04

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