DE890389C - Elektrische Entladungsroehre mit einer indirekt beheizbaren Kathode - Google Patents

Elektrische Entladungsroehre mit einer indirekt beheizbaren Kathode

Info

Publication number
DE890389C
DE890389C DEP20749D DEP0020749D DE890389C DE 890389 C DE890389 C DE 890389C DE P20749 D DEP20749 D DE P20749D DE P0020749 D DEP0020749 D DE P0020749D DE 890389 C DE890389 C DE 890389C
Authority
DE
Germany
Prior art keywords
cathode
flattened
electric discharge
discharge tube
parts
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
DEP20749D
Other languages
German (de)
English (en)
Inventor
Henricus Johannes De Weyer
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken 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 Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of DE890389C publication Critical patent/DE890389C/de
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
    • H01J1/15—Cathodes heated directly by an electric current
    • 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

Landscapes

  • Solid Thermionic Cathode (AREA)
  • Electron Sources, Ion Sources (AREA)
  • Electrostatic Spraying Apparatus (AREA)
DEP20749D 1946-11-13 1948-11-05 Elektrische Entladungsroehre mit einer indirekt beheizbaren Kathode Expired DE890389C (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL264502X 1946-11-13
CH230150T 1947-11-04

Publications (1)

Publication Number Publication Date
DE890389C true DE890389C (de) 1953-09-17

Family

ID=25727444

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP20749D Expired DE890389C (de) 1946-11-13 1948-11-05 Elektrische Entladungsroehre mit einer indirekt beheizbaren Kathode

Country Status (7)

Country Link
US (1) US2489367A (h)
BE (1) BE478149A (h)
CH (1) CH264502A (h)
DE (1) DE890389C (h)
FR (1) FR57812E (h)
GB (1) GB652382A (h)
NL (1) NL63789C (h)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2626370A (en) * 1949-05-26 1953-01-20 Rca Corp Filament structure for electron discharge device
US4100449A (en) * 1976-04-05 1978-07-11 Rca Corporation Uniform filament and method of making the same

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1700454A (en) * 1924-07-08 1929-01-29 Western Electric Co Electron emitter and process of making the same
US2112969A (en) * 1926-12-11 1938-04-05 Rca Corp Cathode
BE403333A (h) * 1933-06-24

Also Published As

Publication number Publication date
FR57812E (fr) 1953-09-17
CH264502A (de) 1949-10-15
NL63789C (h)
GB652382A (en) 1951-04-25
BE478149A (h)
US2489367A (en) 1949-11-29

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