GB1470318A - Cathode for electronic tube - Google Patents

Cathode for electronic tube

Info

Publication number
GB1470318A
GB1470318A GB2440374A GB2440374A GB1470318A GB 1470318 A GB1470318 A GB 1470318A GB 2440374 A GB2440374 A GB 2440374A GB 2440374 A GB2440374 A GB 2440374A GB 1470318 A GB1470318 A GB 1470318A
Authority
GB
United Kingdom
Prior art keywords
cathode
emitting
pot
june
triple
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
GB2440374A
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 GB1470318A publication Critical patent/GB1470318A/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

Landscapes

  • Solid Thermionic Cathode (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
GB2440374A 1973-06-06 1974-06-03 Cathode for electronic tube Expired GB1470318A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7307855.A NL158647B (nl) 1973-06-06 1973-06-06 Oxydkathode voor een elektrische ontladingsbuis.

Publications (1)

Publication Number Publication Date
GB1470318A true GB1470318A (en) 1977-04-14

Family

ID=19819020

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2440374A Expired GB1470318A (en) 1973-06-06 1974-06-03 Cathode for electronic tube

Country Status (9)

Country Link
US (1) US3911312A (https=)
JP (1) JPS5621212B2 (https=)
CA (1) CA1008914A (https=)
DE (1) DE2425337C3 (https=)
ES (1) ES426956A1 (https=)
FR (1) FR2232833B1 (https=)
GB (1) GB1470318A (https=)
IT (1) IT1014280B (https=)
NL (1) NL158647B (https=)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51115765A (en) * 1975-04-03 1976-10-12 Sony Corp Electron tube cathode apparatus
JPS5351798U (https=) * 1976-10-02 1978-05-02
US7208864B2 (en) * 2002-07-24 2007-04-24 Thomson Licensing Oxide cathode for electron gun with a differentially doped metallic substrate
EP1385190A1 (en) * 2002-07-24 2004-01-28 Thomson Licensing S.A. Oxide cathode for electron gun with a differentially doped metallic substrate

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2179110A (en) * 1938-08-27 1939-11-07 Rca Corp Cathode for electron discharge devices
US2192491A (en) * 1939-02-01 1940-03-05 Rca Corp Cathode for electron discharge devices
FR1107589A (fr) * 1954-06-18 1956-01-03 Csf Perfectionnements aux supports de cathodes à oxydes
FR1152810A (fr) * 1955-06-29 1958-02-26 Philips Nv Cathode à oxydes et procédé de préparation d'alliages de nickel pour leur couchede fond
NL101694C (https=) * 1959-03-06
US3099577A (en) * 1960-08-24 1963-07-30 Philips Corp Method of manufacturing oxide cathodes and cathodes manufactured by such methods
GB1076229A (en) * 1963-10-08 1967-07-19 Sylvania Electric Prod Cathodes
US3351486A (en) * 1966-11-23 1967-11-07 Sylvania Electric Prod Cathodes

Also Published As

Publication number Publication date
DE2425337C3 (de) 1981-06-25
NL158647B (nl) 1978-11-15
FR2232833A1 (https=) 1975-01-03
DE2425337A1 (de) 1975-01-02
IT1014280B (it) 1977-04-20
DE2425337B2 (de) 1978-04-27
ES426956A1 (es) 1976-08-01
JPS5023554A (https=) 1975-03-13
US3911312A (en) 1975-10-07
NL7307855A (https=) 1974-12-10
CA1008914A (en) 1977-04-19
FR2232833B1 (https=) 1978-12-29
AU6971174A (en) 1975-12-04
JPS5621212B2 (https=) 1981-05-18

Similar Documents

Publication Publication Date Title
GB1432030A (en) Getter device and composition
EP0951585A1 (en) Low work function electrode
SE8005075L (sv) Bipoler elektrod
GB1438524A (en) Electrode for a gas and/or vapour discharge lamp and method of forming the electrode
GB1469554A (en) Thermionic cathodes
GB1327609A (en) Electric lamps
GB1457798A (en) Cathode-ray tube
GB1470318A (en) Cathode for electronic tube
GB1519439A (en) Magnetron having a helical cathode
GB1209078A (en) Improvements in or relating to thermionic dispenser cathodes
GB1323518A (en) Directly heated cathode structure for electron tubes
JPS5596531A (en) Directly heated cathode for electron tube
CA993030A (en) Method of making a iii-v compound electron-emissive cathode, and tube suited for such method
GB1294383A (en) Discharge lamps having improved thermionic cathodes
GB1038775A (en) Improvements in or relating to cathode elements
GB1377048A (en) Method of manufacturing an electric discharge tube
GB1016067A (en) Electrode structures for electron tubes
JPS553104A (en) Method of manufacturing discharge lamp
GB1085529A (en) Oxide cathode for electron discharge tubes
GB1201172A (en) Microwave tubes and methods of fixing lossy coatings therein
JPS5233474A (en) Manufacturing process of flat electron ray indicator tube
JPS5228859A (en) Green fluorescent display tube excited by slow electron bemm
GB1015272A (en) Incandescent cathode for electronic valves and process for producing same
GB1090414A (en) Cathode ray tube
GB1176121A (en) Improvements in or relating to Grid Electrodes for Electron Tubes.

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee