GB239511A - Improvements in and relating to electron discharge apparatus - Google Patents

Improvements in and relating to electron discharge apparatus

Info

Publication number
GB239511A
GB239511A GB21852/25A GB2185225A GB239511A GB 239511 A GB239511 A GB 239511A GB 21852/25 A GB21852/25 A GB 21852/25A GB 2185225 A GB2185225 A GB 2185225A GB 239511 A GB239511 A GB 239511A
Authority
GB
United Kingdom
Prior art keywords
circuit
cathode
tubes
resistance
regulator
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
GB21852/25A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB239511A publication Critical patent/GB239511A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
    • B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
    • 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

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • X-Ray Techniques (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

239,511. British Thomson-Houston Co., Ltd., (Assignees of Kearsley, W. K.). Sept. 2, 1924, [Convention date]. Addition to 170,546. R÷ntgen-ray apparatus. - In the apparatus of the parent Specification comprising a supply circuit 18 for the tube and a heating circuit 10 for the cathode containing a vibratory regulator 19 shunting a resistance 14. the regulator is provided with a single actuating coil 17 connected directly by lines 38, 39 to the main supply circuit 3, 4. Increases or decreases in the voltage of the circuit 3, 4 respectively decrease or increase the periods during which the resistance 14 is shortcircuited so that the temperature of the cathode is maintained constant regardless of voltage changes in the circuit 3, 4, constancy of electron emission from the cathode and of quantity X-ray output being produced in carefully exhausted tubes with constant internal conditions. Selfrectifying Coolidge tubes as shown, or tubes! having a rectifier in the circuit between the cathode and anode may be used. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the arrangements described in the parent Specification and refers to electron discharge apparatus generally. This subject-matter does not appear in the Specification as accepted.
GB21852/25A 1924-09-02 1925-09-01 Improvements in and relating to electron discharge apparatus Expired GB239511A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US735266A US1653102A (en) 1924-09-02 1924-09-02 Electron-discharge apparatus

Publications (1)

Publication Number Publication Date
GB239511A true GB239511A (en) 1926-08-05

Family

ID=24955045

Family Applications (3)

Application Number Title Priority Date Filing Date
GB9919/21A Expired GB170546A (en) 1924-09-02 1921-04-04 Improvements in and relating to electron discharge apparatus
GB19381/22A Expired GB201741A (en) 1924-09-02 1922-07-14 Improvements in and relating to x-ray apparatus
GB21852/25A Expired GB239511A (en) 1924-09-02 1925-09-01 Improvements in and relating to electron discharge apparatus

Family Applications Before (2)

Application Number Title Priority Date Filing Date
GB9919/21A Expired GB170546A (en) 1924-09-02 1921-04-04 Improvements in and relating to electron discharge apparatus
GB19381/22A Expired GB201741A (en) 1924-09-02 1922-07-14 Improvements in and relating to x-ray apparatus

Country Status (5)

Country Link
US (1) US1653102A (en)
DE (1) DE407939C (en)
FR (3) FR542381A (en)
GB (3) GB170546A (en)
NL (1) NL9214C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE765930C (en) * 1938-03-27 1954-02-08 Siemens Reiniger Werke Ag Device for automatically keeping the emission of glow cathode discharge tubes constant, especially X-ray tubes
US2824925A (en) * 1951-06-23 1958-02-25 Westinghouse Electric Corp Electromagnetic trip circuit interrupters

Also Published As

Publication number Publication date
FR31070E (en) 1926-11-22
FR542381A (en) 1922-08-10
DE407939C (en) 1925-01-06
NL9214C (en) 1923-06-15
US1653102A (en) 1927-12-20
GB201741A (en) 1923-08-09
FR27289E (en) 1924-05-31
GB170546A (en) 1922-06-15

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