GB384136A - Improvements in or relating to thermionic valves or electron discharge tubes - Google Patents

Improvements in or relating to thermionic valves or electron discharge tubes

Info

Publication number
GB384136A
GB384136A GB4751/32A GB475132A GB384136A GB 384136 A GB384136 A GB 384136A GB 4751/32 A GB4751/32 A GB 4751/32A GB 475132 A GB475132 A GB 475132A GB 384136 A GB384136 A GB 384136A
Authority
GB
United Kingdom
Prior art keywords
cathode
heater
relating
discharge tubes
electron discharge
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
GB4751/32A
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.)
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
Publication of GB384136A publication Critical patent/GB384136A/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
    • H01J1/22—Heaters

Landscapes

  • Discharge Lamp (AREA)
GB4751/32A 1931-05-01 1932-02-17 Improvements in or relating to thermionic valves or electron discharge tubes Expired GB384136A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE384136X 1931-05-01

Publications (1)

Publication Number Publication Date
GB384136A true GB384136A (en) 1932-12-01

Family

ID=6368729

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4751/32A Expired GB384136A (en) 1931-05-01 1932-02-17 Improvements in or relating to thermionic valves or electron discharge tubes

Country Status (4)

Country Link
US (1) US1946076A (fr)
BE (1) BE387951A (fr)
FR (1) FR735516A (fr)
GB (1) GB384136A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE739182C (de) * 1935-01-12 1943-09-14 Philips Patentverwaltung Verfahren zur Herstellung einer indirekt beheizten Kathode fuer elektrische Entladungsroehren
DE904570C (de) * 1940-10-30 1954-02-18 Henry Kershaw Verfahren zur Herstellung einer mantelfoermigen Kathode fuer Elektronenroehren

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE739182C (de) * 1935-01-12 1943-09-14 Philips Patentverwaltung Verfahren zur Herstellung einer indirekt beheizten Kathode fuer elektrische Entladungsroehren
DE904570C (de) * 1940-10-30 1954-02-18 Henry Kershaw Verfahren zur Herstellung einer mantelfoermigen Kathode fuer Elektronenroehren

Also Published As

Publication number Publication date
US1946076A (en) 1934-02-06
FR735516A (fr) 1932-11-10
BE387951A (fr)

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