CH207921A - Method of manufacturing an electric discharge tube with a secondary emission electrode. - Google Patents

Method of manufacturing an electric discharge tube with a secondary emission electrode.

Info

Publication number
CH207921A
CH207921A CH207921DA CH207921A CH 207921 A CH207921 A CH 207921A CH 207921D A CH207921D A CH 207921DA CH 207921 A CH207921 A CH 207921A
Authority
CH
Switzerland
Prior art keywords
manufacturing
discharge tube
electric discharge
emission electrode
secondary emission
Prior art date
Application number
Other languages
German (de)
Inventor
Gloeilampenfabrieken N Philips
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 CH207921A publication Critical patent/CH207921A/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
    • H01J9/12—Manufacture of electrodes or electrode systems of photo-emissive cathodes; of secondary-emission electrodes
    • H01J9/125—Manufacture of electrodes or electrode systems of photo-emissive cathodes; of secondary-emission electrodes of secondary emission electrodes
    • 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
    • H01J1/32—Secondary-electron-emitting electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2201/00—Electrodes common to discharge tubes
    • H01J2201/32—Secondary emission electrodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Discharge Lamp (AREA)
  • Solid Thermionic Cathode (AREA)
  • Gas-Filled Discharge Tubes (AREA)
CH207921D 1937-03-30 1938-03-28 Method of manufacturing an electric discharge tube with a secondary emission electrode. CH207921A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL207921X 1937-03-30

Publications (1)

Publication Number Publication Date
CH207921A true CH207921A (en) 1939-12-15

Family

ID=19778652

Family Applications (1)

Application Number Title Priority Date Filing Date
CH207921D CH207921A (en) 1937-03-30 1938-03-28 Method of manufacturing an electric discharge tube with a secondary emission electrode.

Country Status (7)

Country Link
US (1) US2159774A (en)
BE (1) BE427228A (en)
CH (1) CH207921A (en)
DE (1) DE747205C (en)
FR (1) FR835838A (en)
GB (1) GB498792A (en)
NL (1) NL50262C (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE477661A (en) * 1939-02-03
DE914418C (en) * 1939-02-19 1954-07-01 Fernseh Gmbh Discharge tubes with a secondary emitting insulating surface
FR857575A (en) * 1939-02-27 1940-09-19 Materiel Telephonique Electronic discharge devices and circuits using them
DE895629C (en) * 1940-07-31 1953-11-05 Zeiss Ikon Ag Process for the manufacture of secondary emission cathodes
US2422088A (en) * 1944-04-03 1947-06-10 Rca Corp Electronic discriminator
NL72121C (en) * 1945-10-24
GB683061A (en) * 1948-01-24 1952-11-19 Emi Ltd Improvements relating to thermionic valves utilising secondary electron emission amplification
US2792273A (en) * 1954-01-14 1957-05-14 Gen Electric Oxide coated nickel cathode and method of activation
US2878093A (en) * 1955-02-14 1959-03-17 Univ Minnesota Method of preparing emitter surfaces

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT101557B (en) * 1923-04-11 1925-11-10 Philips Nv Discharge tube.
BE359997A (en) * 1928-05-14
GB443214A (en) * 1934-08-20 1936-02-20 Albert Karl Franz Patin Improved method of applying coatings of alkali or alkaline earth metals

Also Published As

Publication number Publication date
BE427228A (en)
US2159774A (en) 1939-05-23
DE747205C (en) 1944-09-15
GB498792A (en) 1939-01-13
FR835838A (en) 1939-01-04
NL50262C (en)

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