EP0025688A2 - Procédé pour l'obtention rapide d'une emission de rayons X stabilisée dans une tube à rayons X - Google Patents

Procédé pour l'obtention rapide d'une emission de rayons X stabilisée dans une tube à rayons X Download PDF

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Publication number
EP0025688A2
EP0025688A2 EP80303161A EP80303161A EP0025688A2 EP 0025688 A2 EP0025688 A2 EP 0025688A2 EP 80303161 A EP80303161 A EP 80303161A EP 80303161 A EP80303161 A EP 80303161A EP 0025688 A2 EP0025688 A2 EP 0025688A2
Authority
EP
European Patent Office
Prior art keywords
voltage
current
ray tube
ray
tube
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.)
Ceased
Application number
EP80303161A
Other languages
German (de)
English (en)
Other versions
EP0025688A3 (fr
Inventor
Ronald Frank Bax
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.)
Pfizer Inc
Original Assignee
Pfizer Inc
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 Pfizer Inc filed Critical Pfizer Inc
Publication of EP0025688A2 publication Critical patent/EP0025688A2/fr
Publication of EP0025688A3 publication Critical patent/EP0025688A3/fr
Ceased 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
    • H05G1/08—Electrical details
    • H05G1/26—Measuring, controlling or protecting
    • H05G1/30—Controlling
    • H05G1/34—Anode current, heater current or heater voltage of X-ray tube
    • 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
    • H05G1/56—Switching-on; Switching-off

Definitions

  • electronic switch 50 In its normal condition, (i.e. no positive control signal applied), electronic switch 50 connects a very small, substantially constant, positive input voltage to amplifier 52 via a connection to the voltage drop across diode 54 which, in turn, is forward biased due to the analog control current appearing on line 38.
  • a relatively small analog voltage control appears on line 56 corresponding to approximately 25-30 kv of x-ray tube operating voltage.
  • a positive control signal applied to electronic switch 50 will cause the input to amplifier 52 to be increased significantly via a pre-adjustable positive supply voltage applied through adjustable potentiometer 58.
  • the analog voltage control signal on line 56 is stepped to correspond to the full x-ray tube operating voltage (140-150 kv).

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • X-Ray Techniques (AREA)
EP80303161A 1979-09-13 1980-09-09 Procédé pour l'obtention rapide d'une emission de rayons X stabilisée dans une tube à rayons X Ceased EP0025688A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US7518779A 1979-09-13 1979-09-13
US75187 1979-09-13

Publications (2)

Publication Number Publication Date
EP0025688A2 true EP0025688A2 (fr) 1981-03-25
EP0025688A3 EP0025688A3 (fr) 1981-05-27

Family

ID=22124124

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80303161A Ceased EP0025688A3 (fr) 1979-09-13 1980-09-09 Procédé pour l'obtention rapide d'une emission de rayons X stabilisée dans une tube à rayons X

Country Status (6)

Country Link
EP (1) EP0025688A3 (fr)
JP (1) JPS5650100A (fr)
BR (1) BR8005771A (fr)
DK (1) DK389280A (fr)
ES (1) ES495031A0 (fr)
GR (1) GR70282B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0066928A1 (fr) * 1981-06-04 1982-12-15 Philips Patentverwaltung GmbH Procédé pour faire fonctionner un générateur de rayons X et générateur à rayons X pour la mise en oeuvre de ce procédé
EP0464985A3 (en) * 1990-07-05 1992-06-17 Picker International, Inc. Power supply circuits
EP0682466A1 (fr) * 1994-05-11 1995-11-15 Philips Patentverwaltung GmbH Installation de radiologie
US10244612B2 (en) 2015-09-30 2019-03-26 Shenyang Neusoft Medical Systems Co., Ltd. Bulb tube preheating

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201904168D0 (en) * 2019-03-26 2019-05-08 Nikon Metrology Nv Method of setting a filament demand in an x-ray apparatus, controller, x-ray apparatus, control program and storage medium

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1062831B (de) * 1958-06-13 1959-08-06 Siemens Reiniger Werke Ag Diagnostik-Roentgenapparat mit Mitteln zur Regelung des Roentgenroehren-emissionsstromes vor Aufnahmebeginn
DE1639397A1 (de) * 1968-01-30 1971-02-04 Siemens Ag Roentgendiagnostikapparat mit Regelmitteln zum Konstanthalten des Roentgenroehrenstroms
US3636355A (en) * 1969-09-24 1972-01-18 Cgr Medical Corp Starting voltage suppressor circuitry for an x-ray generator
US4072865A (en) * 1976-06-24 1978-02-07 American Radiologic Systems, Inc. Automatic control system
JPS5385188A (en) * 1977-01-05 1978-07-27 Toshiba Corp Pulse x-ray apparatus
DE2719373C2 (de) * 1977-04-30 1982-10-21 Philips Patentverwaltung Gmbh, 2000 Hamburg Schaltungsanordnung eines Röntgengenerators mit einem durch ein Zeitsteuerglied gesteuerten elektronischen Schalter im Primärkreis eines Hochspannungs-Transformators
CA1120600A (fr) * 1977-09-23 1982-03-23 Heikki K.J. Kanerva Methode pour regulariser et stabiliser l'intensite de rayonnement d'une source de rayons x et source de rayons x utilisant cette methode

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0066928A1 (fr) * 1981-06-04 1982-12-15 Philips Patentverwaltung GmbH Procédé pour faire fonctionner un générateur de rayons X et générateur à rayons X pour la mise en oeuvre de ce procédé
EP0464985A3 (en) * 1990-07-05 1992-06-17 Picker International, Inc. Power supply circuits
EP0682466A1 (fr) * 1994-05-11 1995-11-15 Philips Patentverwaltung GmbH Installation de radiologie
US10244612B2 (en) 2015-09-30 2019-03-26 Shenyang Neusoft Medical Systems Co., Ltd. Bulb tube preheating

Also Published As

Publication number Publication date
GR70282B (fr) 1982-09-03
DK389280A (da) 1981-03-14
ES8200538A1 (es) 1981-11-01
ES495031A0 (es) 1981-11-01
BR8005771A (pt) 1981-03-24
EP0025688A3 (fr) 1981-05-27
JPS5650100A (en) 1981-05-07

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19840319

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Inventor name: BAX, RONALD FRANK