GB543920A - Improvements in cathodes for cathode ray tubes - Google Patents

Improvements in cathodes for cathode ray tubes

Info

Publication number
GB543920A
GB543920A GB1703440A GB1703440A GB543920A GB 543920 A GB543920 A GB 543920A GB 1703440 A GB1703440 A GB 1703440A GB 1703440 A GB1703440 A GB 1703440A GB 543920 A GB543920 A GB 543920A
Authority
GB
United Kingdom
Prior art keywords
spirals
cathodes
ray tubes
box
terminal support
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
GB1703440A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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
Priority to FR950881D priority Critical patent/FR950881A/fr
Application filed by British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB1703440A priority patent/GB543920A/en
Publication of GB543920A publication Critical patent/GB543920A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/48—Electron guns
    • H01J29/484—Eliminating deleterious effects due to thermal effects, electrical or magnetic fields; Preventing unwanted emission
    • 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

  • Solid Thermionic Cathode (AREA)
GB1703440A 1940-11-29 1940-11-29 Improvements in cathodes for cathode ray tubes Expired GB543920A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR950881D FR950881A (US06373033-20020416-M00071.png) 1940-11-29
GB1703440A GB543920A (en) 1940-11-29 1940-11-29 Improvements in cathodes for cathode ray tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1703440A GB543920A (en) 1940-11-29 1940-11-29 Improvements in cathodes for cathode ray tubes

Publications (1)

Publication Number Publication Date
GB543920A true GB543920A (en) 1942-03-19

Family

ID=10088050

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1703440A Expired GB543920A (en) 1940-11-29 1940-11-29 Improvements in cathodes for cathode ray tubes

Country Status (2)

Country Link
FR (1) FR950881A (US06373033-20020416-M00071.png)
GB (1) GB543920A (US06373033-20020416-M00071.png)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2817451B2 (ja) * 1991-06-25 1998-10-30 日本電気株式会社 電子管用カソード

Also Published As

Publication number Publication date
FR950881A (US06373033-20020416-M00071.png) 1949-10-10

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