GB391938A - 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
GB391938A
GB391938A GB4749/32A GB474932A GB391938A GB 391938 A GB391938 A GB 391938A GB 4749/32 A GB4749/32 A GB 4749/32A GB 474932 A GB474932 A GB 474932A GB 391938 A GB391938 A GB 391938A
Authority
GB
United Kingdom
Prior art keywords
heater
tube
heaters
electron discharge
supported
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
GB4749/32A
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 GB391938A publication Critical patent/GB391938A/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)
  • Solid Thermionic Cathode (AREA)
GB4749/32A 1931-03-24 1932-02-17 Improvements in or relating to thermionic valves or electron discharge tubes Expired GB391938A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL391938X 1931-03-24

Publications (1)

Publication Number Publication Date
GB391938A true GB391938A (en) 1933-05-11

Family

ID=19785802

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4749/32A Expired GB391938A (en) 1931-03-24 1932-02-17 Improvements in or relating to thermionic valves or electron discharge tubes

Country Status (4)

Country Link
US (1) US2098807A (forum.php)
BE (1) BE386698A (forum.php)
FR (1) FR732375A (forum.php)
GB (1) GB391938A (forum.php)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3263114A (en) * 1960-10-26 1966-07-26 Firm Egyesult Izzolampa Es Vil Shock and vibration resistant heater for indirectly heated cathodes of radio receiving tubes

Also Published As

Publication number Publication date
US2098807A (en) 1937-11-09
BE386698A (forum.php)
FR732375A (fr) 1932-09-19

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