CH421311A - Process for coating a filament for an indirectly heated cathode with a dark-colored layer - Google Patents

Process for coating a filament for an indirectly heated cathode with a dark-colored layer

Info

Publication number
CH421311A
CH421311A CH935763A CH935763A CH421311A CH 421311 A CH421311 A CH 421311A CH 935763 A CH935763 A CH 935763A CH 935763 A CH935763 A CH 935763A CH 421311 A CH421311 A CH 421311A
Authority
CH
Switzerland
Prior art keywords
filament
dark
coating
colored layer
indirectly heated
Prior art date
Application number
CH935763A
Other languages
German (de)
Inventor
Alberta Van Stratum A Johannes
Zalm Pieter
Original Assignee
Philips 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 Nv filed Critical Philips Nv
Publication of CH421311A publication Critical patent/CH421311A/en

Links

Classifications

    • 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
    • H01J9/08—Manufacture of heaters for indirectly-heated cathodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Solid Thermionic Cathode (AREA)
  • Manufacture And Refinement Of Metals (AREA)
CH935763A 1962-07-30 1963-07-26 Process for coating a filament for an indirectly heated cathode with a dark-colored layer CH421311A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL281567 1962-07-30

Publications (1)

Publication Number Publication Date
CH421311A true CH421311A (en) 1966-09-30

Family

ID=19754016

Family Applications (1)

Application Number Title Priority Date Filing Date
CH935763A CH421311A (en) 1962-07-30 1963-07-26 Process for coating a filament for an indirectly heated cathode with a dark-colored layer

Country Status (7)

Country Link
AT (1) AT240988B (en)
CH (1) CH421311A (en)
DE (1) DE1183602B (en)
DK (1) DK105818C (en)
ES (1) ES290364A1 (en)
GB (1) GB1006476A (en)
NL (1) NL281567A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3581144A (en) * 1969-03-27 1971-05-25 Gen Electric Metal-clad insulated electrical heater
DE2317446C3 (en) * 1973-04-06 1983-11-10 Standard Elektrik Lorenz Ag, 7000 Stuttgart Method of manufacturing a heating element for an indirectly heated cathode
DE2317445C3 (en) * 1973-04-06 1982-09-09 Standard Elektrik Lorenz Ag, 7000 Stuttgart Method for manufacturing a heater for an indirectly heated cathode
DE2442509C2 (en) * 1974-09-05 1985-03-07 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Process for producing a dark layer on heating elements for cathodes
CN102832090B (en) * 2012-08-29 2015-04-22 安徽华东光电技术研究所 Heater assembly for space traveling wave tube and preparation method thereof
CN112490098B (en) * 2020-12-09 2023-03-14 成都国光电气股份有限公司 Mixed filling powder for hot wire component and preparation method thereof

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1296399A (en) * 1960-08-19 1962-06-15 Rca Corp Cathode Heating Filament for Electron Tubes

Also Published As

Publication number Publication date
DK105818C (en) 1966-11-14
ES290364A1 (en) 1964-02-16
GB1006476A (en) 1965-10-06
AT240988B (en) 1965-06-25
NL281567A (en)
DE1183602B (en) 1964-12-17

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