GB253084A - Improvements in or relating to electrodes for electron discharge tubes or thermionicvalves - Google Patents

Improvements in or relating to electrodes for electron discharge tubes or thermionicvalves

Info

Publication number
GB253084A
GB253084A GB11092/26A GB1109226A GB253084A GB 253084 A GB253084 A GB 253084A GB 11092/26 A GB11092/26 A GB 11092/26A GB 1109226 A GB1109226 A GB 1109226A GB 253084 A GB253084 A GB 253084A
Authority
GB
United Kingdom
Prior art keywords
conductor
rod
thermionicvalves
relating
electrodes
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
GB11092/26A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB253084A publication Critical patent/GB253084A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/28—Non-electron-emitting electrodes; Screens
    • H01J19/30—Non-electron-emitting electrodes; Screens characterised by the material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
    • H01J2893/0012—Constructional arrangements
    • H01J2893/0019—Chemical composition and manufacture
    • H01J2893/002—Chemical composition and manufacture chemical

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

253,084. Naamlooze Vennootschap Philips' Gloeilampenfabrieken. June 8, 1925, [Convention dale]. No Patent granted (Sealing fee not paid). Vacuum tubes.-An electrode, such as a grid or anode, consisting of a conductor 11 bent into a helix or zig-zag, is strengthened by attachment to a conductive rod or backbone 16 which has a considerably higher specific resistance than the conductor itself. The bent conductor may be of nickel and the rod 16 of constantan. During exhaustion of the valve, such an electrode may be heated by current passed along it from leading-in wires 14, 15. Each turn of the conductor 11 may be welded to the rod 16. When there are two or more grids, each of them may be constructed as described.
GB11092/26A 1925-06-08 1926-04-27 Improvements in or relating to electrodes for electron discharge tubes or thermionicvalves Expired GB253084A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL253084X 1925-06-08

Publications (1)

Publication Number Publication Date
GB253084A true GB253084A (en) 1926-09-30

Family

ID=19781187

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11092/26A Expired GB253084A (en) 1925-06-08 1926-04-27 Improvements in or relating to electrodes for electron discharge tubes or thermionicvalves

Country Status (1)

Country Link
GB (1) GB253084A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2170349A (en) * 1985-01-25 1986-07-30 Coal Ind A method of treating an instrument having an electrode

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2170349A (en) * 1985-01-25 1986-07-30 Coal Ind A method of treating an instrument having an electrode
US4777349A (en) * 1985-01-25 1988-10-11 Coal Industry (Patents) Limited Electrode sensor apparatus and method of operating the same

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