GB767477A - Improvements in or relating to x-ray apparatus - Google Patents

Improvements in or relating to x-ray apparatus

Info

Publication number
GB767477A
GB767477A GB8403/55A GB840355A GB767477A GB 767477 A GB767477 A GB 767477A GB 8403/55 A GB8403/55 A GB 8403/55A GB 840355 A GB840355 A GB 840355A GB 767477 A GB767477 A GB 767477A
Authority
GB
United Kingdom
Prior art keywords
tube
voltage
result
valve
exposure time
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
GB8403/55A
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.)
Westinghouse Electric International Co
Original Assignee
Westinghouse Electric International Co
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 Westinghouse Electric International Co filed Critical Westinghouse Electric International Co
Publication of GB767477A publication Critical patent/GB767477A/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
    • H05G1/265—Measurements of current, voltage or power
    • 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
    • H05G1/46—Combined control of different quantities, e.g. exposure time as well as voltage or current

Abstract

767,477. Control systems for X-ray apparatus. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. March 23, 1955 [March 26, 1954], No. 8403/55. Drawings to Specification. Class 38 (4). Control voltages representative of the selected anode voltage, discharge current and exposure time of an X-ray tube are applied to a valve which, if the selected values are such as would result in the overloading of the tube, conducts and causes operation of a relay which prevents energization of the H.T. transformer of the tube, the control voltage representative of exposure time being modified by a further voltage proportional to heat stored in the tube as the result of previous exposures. The control voltages are obtained from potentiometers connected across a D.C. source and ganged with the tube voltage, current and time selectors, respectively. The control voltage representative of exposure time is in the case of a proposed relatively long exposure, obtained from a potentiometer fed over a valve which is variably biased in accordance with the heat energy stored in the anode of the tube as the result of previous exposures: A further valve may cause operation of a second relay to deenergize the tube if the stored heat energy exceeds a predetermined figure.
GB8403/55A 1954-03-26 1955-03-23 Improvements in or relating to x-ray apparatus Expired GB767477A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US419002A US2840718A (en) 1954-03-26 1954-03-26 X-ray apparatus

Publications (1)

Publication Number Publication Date
GB767477A true GB767477A (en) 1957-02-06

Family

ID=23660382

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8403/55A Expired GB767477A (en) 1954-03-26 1955-03-23 Improvements in or relating to x-ray apparatus

Country Status (3)

Country Link
US (1) US2840718A (en)
FR (1) FR1142372A (en)
GB (1) GB767477A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2345947A1 (en) * 1973-09-12 1975-05-07 Philips Patentverwaltung X-ray diagnostic apparatus - has a square pulse monitoring circuit for the X-ray tube load cycle

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3061729A (en) * 1959-10-12 1962-10-30 Profexray Inc X-ray tube current metering circuit
US3631527A (en) * 1968-07-09 1971-12-28 Picker Corp X-ray tube kilovoltage control system
US3634871A (en) * 1970-04-15 1972-01-11 Cgr Medical Corp Heat-sensing circuit
US3683191A (en) * 1970-05-18 1972-08-08 Machlett Lab Inc Modulator system
FR2127187A5 (en) * 1971-02-26 1972-10-13 Radiologie Cie Gle
US4322797A (en) * 1978-04-19 1982-03-30 U.S. Philips Corporation X-ray tube filament current predicting circuit
US11589447B2 (en) * 2021-04-07 2023-02-21 Energy Resources International Co., Ltd. Driving device for driving a high-voltage X ray tube and method thereof driving the same

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2353979A (en) * 1942-07-04 1944-07-18 Westinghouse Electric & Mfg Co Measuring system
US2745020A (en) * 1950-01-06 1956-05-08 Gen Electric Electrical protective system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2345947A1 (en) * 1973-09-12 1975-05-07 Philips Patentverwaltung X-ray diagnostic apparatus - has a square pulse monitoring circuit for the X-ray tube load cycle

Also Published As

Publication number Publication date
US2840718A (en) 1958-06-24
FR1142372A (en) 1957-09-17

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