GB652382A - Improvements in or relating to electric discharge tubes - Google Patents

Improvements in or relating to electric discharge tubes

Info

Publication number
GB652382A
GB652382A GB30192/47A GB3019247A GB652382A GB 652382 A GB652382 A GB 652382A GB 30192/47 A GB30192/47 A GB 30192/47A GB 3019247 A GB3019247 A GB 3019247A GB 652382 A GB652382 A GB 652382A
Authority
GB
United Kingdom
Prior art keywords
flattened
cathode
mica
parts
nov
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
GB30192/47A
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
Philips Electronics 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, Philips Electronics NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB652382A publication Critical patent/GB652382A/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
    • H01J1/15—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

  • Electron Sources, Ion Sources (AREA)
  • Electrostatic Spraying Apparatus (AREA)
  • Solid Thermionic Cathode (AREA)
GB30192/47A 1946-11-13 1947-11-13 Improvements in or relating to electric discharge tubes Expired GB652382A (en)

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
GB652382A true GB652382A (en) 1951-04-25

Family

ID=25727444

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30192/47A Expired GB652382A (en) 1946-11-13 1947-11-13 Improvements in or relating to electric discharge tubes

Country Status (7)

Country Link
US (1) US2489367A (US06811534-20041102-M00003.png)
BE (1) BE478149A (US06811534-20041102-M00003.png)
CH (1) CH264502A (US06811534-20041102-M00003.png)
DE (1) DE890389C (US06811534-20041102-M00003.png)
FR (1) FR57812E (US06811534-20041102-M00003.png)
GB (1) GB652382A (US06811534-20041102-M00003.png)
NL (1) NL63789C (US06811534-20041102-M00003.png)

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 (US06811534-20041102-M00003.png) * 1933-06-24

Also Published As

Publication number Publication date
BE478149A (US06811534-20041102-M00003.png)
US2489367A (en) 1949-11-29
CH264502A (de) 1949-10-15
DE890389C (de) 1953-09-17
FR57812E (fr) 1953-09-17
NL63789C (US06811534-20041102-M00003.png)

Similar Documents

Publication Publication Date Title
GB650420A (en) Improvements in or relating to high frequency electron discharge tube structures
GB546543A (en) Improvements relating to vacuum electric discharge devices
GB652382A (en) Improvements in or relating to electric discharge tubes
GB589911A (en) Improvements in and relating to the electric treatment of hair
GB672724A (en) Improvements in or relating to electron discharge tubes
US2439787A (en) Ultraviolet ray generator
GB653707A (en) Improvements in or relating to electric discharge tubes comprising an indirectly heated cathode
GB950188A (en) Improvements in electrical vapor detector
GB638805A (en) Improvements in and relating to electric incandescent lamps
GB615069A (en) Improvements in or relating to electrical heating elements
GB833432A (en) Improvements in or relating to indirectly heated cathodes for electron discharge devices and to heater elements therefor
GB335573A (en) Improvements in thermionic cathodes of vacuum electric tube devices
GB634443A (en) Improvements in and relating to seals for electric discharge devices
GB670129A (en) Improvements in or relating to electric discharge tubes
GB564494A (en) Improvements in or relating to electron discharge devices
GB762579A (en) Improvements in or relating to gas-filled electric discharge tubes
GB676009A (en) Improvements in or relating to indirectly-heated cathodes for electric discharge tubes
GB576883A (en) Improvements in electric discharge devices
GB630868A (en) Improvements in or relating to electrical heating elements
GB541596A (en) Improvements in or relating to magnetic deflecting means for electron discharge devices
GB751061A (en) Improvements in or relating to the manufacture of electronic tubes
GB765030A (en) Improvements in or relating to the manufacture of insulated electric cables
ASAO The Early Days of Fundamental Research Laboratory of General Electric Co., and Late Dr. Langmuir's Attitude for Research
GB691399A (en) Improvements in or relating to travelling wave tubes
GB648046A (en) Improvements in or relating to electric discharge tubes comprising disc-like electrodes