GB824998A - Improvements in means and method of controlling high tension electrical circuits - Google Patents

Improvements in means and method of controlling high tension electrical circuits

Info

Publication number
GB824998A
GB824998A GB12933/57A GB1293357A GB824998A GB 824998 A GB824998 A GB 824998A GB 12933/57 A GB12933/57 A GB 12933/57A GB 1293357 A GB1293357 A GB 1293357A GB 824998 A GB824998 A GB 824998A
Authority
GB
United Kingdom
Prior art keywords
tube
signal lamp
ray tube
switching tube
supply
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
GB12933/57A
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.)
Machlett Laboratories Inc
Original Assignee
Machlett Laboratories 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 Machlett Laboratories Inc filed Critical Machlett Laboratories Inc
Publication of GB824998A publication Critical patent/GB824998A/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
    • H05G1/38—Exposure time
    • H05G1/40—Exposure time using adjustable time-switch

Landscapes

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

Abstract

824,998. Control systems for high-voltage apparatus. MACHLETT LABORATORIES Inc. April 23, 1957 [May 2, 1956], No. 12933/57. Class 38 (4). [Also in Group XL (c)] An electronic control system for an X-ray tube or other high-voltage device 17 comprises a H.V. generator 15 supplying an energy storage device 16 feeding the device 17 through a switching tube 11 controlled from a square pulse forming circuit 10, 12 capable of producing pulses of 1-5 millisecs. duration. In the embodiment described, capacitors 16 charged from rectifier unit 15 are discharged into an X-ray tube 17 through tube 11, rendered conducting by a positive pulse from a monostable cathode coupled multivibrator 10, the pulse width being manually adjustable by means of a C.R. circuit. Arrangements to prevent loss of negative bias on the switching tube are incorporated in a transillumination device (not shown) comprising a signal lamp in the bias supply, a transparent rod and a photo-cell, a fault in which or lack of illumination from the signal lamp causes the H.V. transformer to be disconnected from the supply.
GB12933/57A 1956-05-02 1957-04-23 Improvements in means and method of controlling high tension electrical circuits Expired GB824998A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US582252A US2879404A (en) 1956-05-02 1956-05-02 Means and method of controlling high tension electrical circuits

Publications (1)

Publication Number Publication Date
GB824998A true GB824998A (en) 1959-12-09

Family

ID=24328402

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12933/57A Expired GB824998A (en) 1956-05-02 1957-04-23 Improvements in means and method of controlling high tension electrical circuits

Country Status (3)

Country Link
US (1) US2879404A (en)
CA (1) CA586885A (en)
GB (1) GB824998A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3069548A (en) * 1958-12-17 1962-12-18 Machlett Lab Inc Protective circuits for electron tubes
US3171030A (en) * 1961-03-06 1965-02-23 Zenith Radio Corp System for producing short pulses of x-ray energy
US3633029A (en) * 1970-10-27 1972-01-04 Cgr Medical Corp Pulsed x-ray control system with improved film darkening
JPS5910557B2 (en) * 1976-11-15 1984-03-09 株式会社東芝 computer tomography device
US5202932A (en) * 1990-06-08 1993-04-13 Catawa Pty. Ltd. X-ray generating apparatus and associated method

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2101152A (en) * 1931-12-24 1937-12-07 Westinghouse X Ray Co Inc X-ray apparatus
US2475197A (en) * 1946-02-01 1949-07-05 Gen Radiological Ltd High-tension switching means

Also Published As

Publication number Publication date
US2879404A (en) 1959-03-24
CA586885A (en) 1959-11-10

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