GB1149030A - Improvements in or relating to cathode electrodes for gas-filled electron tubes - Google Patents

Improvements in or relating to cathode electrodes for gas-filled electron tubes

Info

Publication number
GB1149030A
GB1149030A GB2508266A GB2508266A GB1149030A GB 1149030 A GB1149030 A GB 1149030A GB 2508266 A GB2508266 A GB 2508266A GB 2508266 A GB2508266 A GB 2508266A GB 1149030 A GB1149030 A GB 1149030A
Authority
GB
United Kingdom
Prior art keywords
gas
graphite block
relating
june
filled electron
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
GB2508266A
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.)
Thales SA
Original Assignee
CSF Compagnie Generale de Telegraphie sans Fil SA
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 CSF Compagnie Generale de Telegraphie sans Fil SA filed Critical CSF Compagnie Generale de Telegraphie sans Fil SA
Publication of GB1149030A publication Critical patent/GB1149030A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/06—Main electrodes
    • H01J61/067—Main electrodes for low-pressure discharge lamps
    • H01J61/0675—Main electrodes for low-pressure discharge lamps characterised by the material of the electrode
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/02—Details
    • H01J17/04—Electrodes; Screens
    • H01J17/06—Cathodes
    • H01J17/066—Cold cathodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0064—Tubes with cold main electrodes (including cold cathodes)
    • H01J2893/0065—Electrode systems
    • H01J2893/0066—Construction, material, support, protection and temperature regulation of electrodes; Electrode cups

Landscapes

  • Electron Sources, Ion Sources (AREA)
  • Powder Metallurgy (AREA)

Abstract

1,149,030. Cathode materials. CSF-COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. 6 June, 1966 [4 June, 1965], No. 25082/66. Heading H1D. A cathode for a gas-filled electron discharge tube comprises a graphite block 1 in which is embedded an electrically conductive support member 3, such as a rod or hollow cylinder, and which is superficially coated with a layer 2 of metallic tungsten or molybdenum. The metallic layer may be between 0À1 and 1À0 mm. thick and may totally cover the graphite block or cover only that face of the block on the opposite side to the support member. The graphite block may be in the form of a disc, a solid cylinder or, as shown, an annular body 1 with several metal support rods 3 or a hollow metal cylinder providing the support.
GB2508266A 1965-06-04 1966-06-06 Improvements in or relating to cathode electrodes for gas-filled electron tubes Expired GB1149030A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR19592A FR1445723A (en) 1965-06-04 1965-06-04 Improvements to discharge tube electrodes

Publications (1)

Publication Number Publication Date
GB1149030A true GB1149030A (en) 1969-04-16

Family

ID=8580913

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2508266A Expired GB1149030A (en) 1965-06-04 1966-06-06 Improvements in or relating to cathode electrodes for gas-filled electron tubes

Country Status (3)

Country Link
DE (1) DE1539780A1 (en)
FR (1) FR1445723A (en)
GB (1) GB1149030A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010076073A1 (en) * 2008-12-17 2010-07-08 Osram Gesellschaft mit beschränkter Haftung Discharge lamp

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010076073A1 (en) * 2008-12-17 2010-07-08 Osram Gesellschaft mit beschränkter Haftung Discharge lamp

Also Published As

Publication number Publication date
FR1445723A (en) 1966-07-15
DE1539780A1 (en) 1969-09-04

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