GB923489A - Improvements in devices for supplying current to an x-ray tube - Google Patents

Improvements in devices for supplying current to an x-ray tube

Info

Publication number
GB923489A
GB923489A GB36394/59A GB3639459A GB923489A GB 923489 A GB923489 A GB 923489A GB 36394/59 A GB36394/59 A GB 36394/59A GB 3639459 A GB3639459 A GB 3639459A GB 923489 A GB923489 A GB 923489A
Authority
GB
United Kingdom
Prior art keywords
cathode
ray tube
ray
oct
transformer
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.)
Expired
Application number
GB36394/59A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries Ltd
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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB923489A publication Critical patent/GB923489A/en
Expired legal-status Critical Current

Links

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
    • H05G1/52—Target size or shape; Direction of electron beam, e.g. in tubes with one anode and more than one cathode

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • X-Ray Techniques (AREA)

Abstract

923,489. Supply systems for X-ray apparatus. PHILIPS ELECTRICAL INDUSTRIES Ltd. Oct. 27, 1959 [Oct. 30, 1958], No. 36394/59. Class 38 (4). [Also in Group XL (a)] A control system for an X-ray tube 21 having two filamentary cathodes 1, 2 for providing focal spots of different sizes when the tube is used for differing purposes such as radiography or X-ray screening has the cathodes 1, 2 energized from a transformer 3, 4 by way of a selector switch 11 and a number of halfwave rectifying devices 7, 9, 13, 14. The filament to be used is selected by operation of the switch 11 and the arrangement reduces the number of interconnecting leads between the X-ray tube housing 22 and the control desk 32. A resistor 15 may be included in series with the cathode 2 to reduce the current flowing in that cathode or the transformer 3, 4 may be provided with a further secondary winding so that each cathode is fed from a different secondary winding. The current in the cathode is in the form of alternate half-cycles of the supply voltage either positive or negative as the case may be but an alternative arrangement shows a system employing full-wave rectification.
GB36394/59A 1958-10-30 1959-10-27 Improvements in devices for supplying current to an x-ray tube Expired GB923489A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL232773 1958-10-30

Publications (1)

Publication Number Publication Date
GB923489A true GB923489A (en) 1963-04-10

Family

ID=19751410

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36394/59A Expired GB923489A (en) 1958-10-30 1959-10-27 Improvements in devices for supplying current to an x-ray tube

Country Status (5)

Country Link
US (1) US3110810A (en)
CH (1) CH377942A (en)
DE (1) DE1115843B (en)
FR (1) FR1239225A (en)
GB (1) GB923489A (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3530501A (en) * 1968-12-11 1970-09-22 Oak Electro Netics Corp Plural visual indicator assembly energizable through two input terminals
DE2637161A1 (en) * 1976-08-18 1978-02-23 Siemens Ag X-RAY DIAGNOSTIC DEVICE WITH A SHORT TIME SWITCH
US4266133A (en) * 1979-11-08 1981-05-05 Siemens Corporation Multiple focus X-ray generator
US4315154A (en) * 1979-11-08 1982-02-09 Siemens Corporation Multiple focus X-ray generator
DE3001118A1 (en) * 1980-01-14 1981-07-16 Siemens AG, 1000 Berlin und 8000 München X-RAY DIAGNOSTIC GENERATOR FOR AN X-RAY TUBE WITH SEVERAL FIRE SPOTS
DE3008304A1 (en) * 1980-03-04 1981-09-17 Siemens AG, 1000 Berlin und 8000 München X-RAY TUBES WITH TWO CATHODE COILS
FR2541532A1 (en) * 1983-02-22 1984-08-24 Gen Equipment Medical METHOD FOR SWITCHING THE POWER SUPPLY BETWEEN TWO INDEPENDENT CHARGING CIRCUITS
US4685118A (en) * 1983-11-10 1987-08-04 Picker International, Inc. X-ray tube electron beam switching and biasing method and apparatus
EP0149337A3 (en) * 1984-01-16 1986-06-04 Picker International, Inc. X-ray generating apparatus and method of operating an x-ray tube
FR2589028B1 (en) * 1985-10-18 1987-11-20 Thomson Cgr X-RAY GENERATOR
US4799248A (en) * 1987-08-06 1989-01-17 Picker International, Inc. X-ray tube having multiple cathode filaments

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE536052C (en) * 1928-07-17 1931-10-19 Siemens Reiniger Veifa Ges Fue Device for the operation of X-ray tubes with at least two glow cathodes
US1907508A (en) * 1929-11-04 1933-05-09 Gen Electric Thermionic apparatus
DE657284C (en) * 1934-07-20 1938-03-05 Siemens Reiniger Werke Akt Ges X-ray device for fluoroscopy and subsequent recording, in which the current feeding the X-ray tubes is taken from a capacitor or a capacitor battery for recording
CA383388A (en) * 1935-03-22 1939-08-15 Canadian General Electric Company Radiographic tube
US2160605A (en) * 1936-12-18 1939-05-30 Gen Electric Regulating system
AT159930B (en) * 1937-06-26 1940-12-10 Siemens Reiniger Werke Ag Device for quickly switching over from fluoroscopy to exposure.
US2264051A (en) * 1938-06-25 1941-11-25 Firm Siemens Reiniger Werke Ag Apparatus and circuit arrangement for controlling x-ray tubes
US2286091A (en) * 1939-07-22 1942-06-09 George W Haug X-ray tube and system therefor
US2691735A (en) * 1951-06-15 1954-10-12 Hartford Nat Bank & Trust Co X-ray tube
FR1076834A (en) * 1952-05-12 1954-10-29 Philips Nv Lighting device
DE934067C (en) * 1953-03-18 1955-10-13 Koch & Sterzel Ag X-ray apparatus
US2748292A (en) * 1953-05-14 1956-05-29 Continental X Ray Corp Simplified X-ray apparatus

Also Published As

Publication number Publication date
CH377942A (en) 1964-05-31
FR1239225A (en) 1960-08-19
US3110810A (en) 1963-11-12
DE1115843B (en) 1961-10-26

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