GB994471A - Improvements relating to indirectly heated cathodes for use in electron valves - Google Patents

Improvements relating to indirectly heated cathodes for use in electron valves

Info

Publication number
GB994471A
GB994471A GB44443/61A GB4444361A GB994471A GB 994471 A GB994471 A GB 994471A GB 44443/61 A GB44443/61 A GB 44443/61A GB 4444361 A GB4444361 A GB 4444361A GB 994471 A GB994471 A GB 994471A
Authority
GB
United Kingdom
Prior art keywords
cathode
gms
improvements relating
indirectly heated
aluminium
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
GB44443/61A
Other languages
English (en)
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries 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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB994471A publication Critical patent/GB994471A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/13—Solid thermionic cathodes
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H01J1/26—Supports for the emissive material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Solid Thermionic Cathode (AREA)
  • Powder Metallurgy (AREA)
GB44443/61A 1960-12-15 1961-12-12 Improvements relating to indirectly heated cathodes for use in electron valves Expired GB994471A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR847062A FR1282691A (fr) 1960-12-15 1960-12-15 Perfectionnement aux cathodes à oxydes à chauffage indirect pour tubes électroniques

Publications (1)

Publication Number Publication Date
GB994471A true GB994471A (en) 1965-06-10

Family

ID=8744850

Family Applications (1)

Application Number Title Priority Date Filing Date
GB44443/61A Expired GB994471A (en) 1960-12-15 1961-12-12 Improvements relating to indirectly heated cathodes for use in electron valves

Country Status (6)

Country Link
US (1) US3262814A (enEXAMPLES)
DE (1) DE1146207B (enEXAMPLES)
FR (1) FR1282691A (enEXAMPLES)
GB (1) GB994471A (enEXAMPLES)
LU (1) LU40949A1 (enEXAMPLES)
NL (1) NL272248A (enEXAMPLES)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2482139A1 (fr) * 1980-05-09 1981-11-13 Philips Nv Procede permettant de munir une piece metallique d'une surface noire, et cathode obtenue par ce procede
GB2174237A (en) * 1985-03-18 1986-10-29 Hitachi Ltd Indirectly heated cathode manufacture

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3500454A (en) * 1967-11-16 1970-03-10 Sylvania Electric Prod Insulator heater coating for heater-cathode assembly
US3958146A (en) * 1974-02-08 1976-05-18 Gte Sylvania Incorporated Fast warm up picture tube cathode cap having high heat emissivity surface on the interior thereof
US4009409A (en) * 1975-09-02 1977-02-22 Gte Sylvania Incorporated Fast warmup cathode and method of making same

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE489888A (enEXAMPLES) * 1947-02-15 Gen Electric
BE518861A (enEXAMPLES) * 1952-04-01
US2817572A (en) * 1954-04-06 1957-12-24 Telefunken Ges Fur Drahtlase T Electrodes for electron discharge tubes
US2891879A (en) * 1957-07-26 1959-06-23 Westinghouse Electric Corp Black coating of high thermal emissivity and process for applying the same
NL95320C (enEXAMPLES) * 1957-10-04
US2987423A (en) * 1958-09-26 1961-06-06 Rca Corp Heat radiating coatings
US3068337A (en) * 1958-12-05 1962-12-11 Gen Electric Vaporizer and method for making the same
NL101694C (enEXAMPLES) * 1959-03-06
DE1090774B (de) * 1959-03-20 1960-10-13 Siemens Ag Heizelement fuer mittelbar geheizte Kathoden und Verfahren zur Herstellung eines Isolierueberzuges

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2482139A1 (fr) * 1980-05-09 1981-11-13 Philips Nv Procede permettant de munir une piece metallique d'une surface noire, et cathode obtenue par ce procede
GB2174237A (en) * 1985-03-18 1986-10-29 Hitachi Ltd Indirectly heated cathode manufacture
GB2174237B (en) * 1985-03-18 1989-10-04 Hitachi Ltd A manufacturing method of indirectly heated cathode
US5102363A (en) * 1985-03-18 1992-04-07 Hitachi, Ltd. Manufacturing method of indirectly heated cathode

Also Published As

Publication number Publication date
DE1146207B (de) 1963-03-28
NL272248A (enEXAMPLES)
FR1282691A (fr) 1962-01-27
US3262814A (en) 1966-07-26
LU40949A1 (enEXAMPLES) 1962-02-12

Similar Documents

Publication Publication Date Title
GB793726A (en) Improvements in or relating to dispenser cathodes
GB994471A (en) Improvements relating to indirectly heated cathodes for use in electron valves
DE3117961C2 (enEXAMPLES)
GB1123015A (en) A process for producing sintered anodes
US2233917A (en) Black coating for electron discharge devices
GB1071863A (en) Lead-impregnated,iron-base,sintered alloy materials for current-collecting slider shoes
GB1313630A (en) Sealing alloy
DE1279208B (de) Verfahren zum Aufbringen einer fest haftenden UEberzugsschicht auf eine Elektrode einer elektrischen Entladungsroehre
GB1049324A (en) Method of manufacturing electrodes for fuel cells
GB652742A (en) Gaseous electron discharge device
GB844171A (en) Ceramic structures for electron tubes and method of making the same
GB1076229A (en) Cathodes
US3342634A (en) Method of producing black, metalcontaining surface layers
GB879334A (en) Corrosion-resistant treatment of metal articles
Zhao et al. XPS studies of oxidb films on transition metals
GB1350716A (en) Method of providing a layer having a low secondary emission factor on an electron tube anode
CN207659512U (zh) 提高软磁合金材料真空热处理后表面光亮度的工艺装备
JPS5641636A (en) Directly heated type oxide cathode
GB277997A (enEXAMPLES)
AT311065B (de) Verfahren zur Herstellung eines Sinterkörpers aus hochschmelzenden Metall- oder Legierungspulvern und Vakuumofen zur Durchführung des Verfahrens
GB741020A (en) Improvements in or relating to thermionic and secondary emission cathodes
DE593491C (de) Verfahren zur Herstellung von kalten Kathoden fuer elektrische Gasentladungsroehren
AT300970B (de) Verfahren zur Vorbereitung der Oberfläche des Trägers der Emissionsschicht von Oxydkathoden für Elektronenröhren
GB1016067A (en) Electrode structures for electron tubes
DE941627C (de) Caesium-Adsorptionskathode mit Wolframunterlage und Verfahren zu deren Herstellung