ES363751A1 - An electron radiation system for television image tubes. (Machine-translation by Google Translate, not legally binding) - Google Patents

An electron radiation system for television image tubes. (Machine-translation by Google Translate, not legally binding)

Info

Publication number
ES363751A1
ES363751A1 ES363751A ES363751A ES363751A1 ES 363751 A1 ES363751 A1 ES 363751A1 ES 363751 A ES363751 A ES 363751A ES 363751 A ES363751 A ES 363751A ES 363751 A1 ES363751 A1 ES 363751A1
Authority
ES
Spain
Prior art keywords
disc
cathode
translation
machine
heating ribbon
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
ES363751A
Other languages
Spanish (es)
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.)
Nokia Spain SA
Original Assignee
Alcatel Espana SA
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 claimed from DE19681562027 external-priority patent/DE1562027A1/en
Application filed by Alcatel Espana SA filed Critical Alcatel Espana SA
Publication of ES363751A1 publication Critical patent/ES363751A1/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
    • 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

Abstract

An electron gun for a television picture tube comprises a Wehnelt cylinder 1 across which extends an insulator disc 2 which supports a cathode heating ribbon strung across a diameter of the disc. In Fig. 1 the disc 2 is provided with an annular projection 20 across which extends a cathode heating ribbon (not shown in Fig. 1) supporting a cathode 10 and held in tension in grooves in the projection 20 by means of two quadrantal springs 6 secured to the disc by respective eyelets 4. The cathode 10 is preferably a sintered pellet of nickel powder impregnated with electron emissive material. In a modification, Figs. 3 and 4 (not shown) the annular projection 20 is omitted and the heating ribbon is supported by L-shaped springs. In a further arrangement, Figs. 5 and 6 (not shown) the heating ribbon is itself of springy material with its ends secured in the eyelets 4 so that it is bowed away from the disc 2.
ES363751A 1968-02-17 1969-02-17 An electron radiation system for television image tubes. (Machine-translation by Google Translate, not legally binding) Expired ES363751A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681562027 DE1562027A1 (en) 1968-02-17 1968-02-17 Electron beam generating system for television picture tubes

Publications (1)

Publication Number Publication Date
ES363751A1 true ES363751A1 (en) 1970-12-16

Family

ID=5677667

Family Applications (1)

Application Number Title Priority Date Filing Date
ES363751A Expired ES363751A1 (en) 1968-02-17 1969-02-17 An electron radiation system for television image tubes. (Machine-translation by Google Translate, not legally binding)

Country Status (6)

Country Link
AT (1) AT303137B (en)
BE (1) BE728484A (en)
ES (1) ES363751A1 (en)
FR (1) FR2002107A1 (en)
GB (1) GB1258134A (en)
SE (1) SE356395B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3983443A (en) * 1975-03-24 1976-09-28 Rca Corporation Vacuum electron device having directly-heated matrix-cathode-heater assembly

Also Published As

Publication number Publication date
SE356395B (en) 1973-05-21
FR2002107A1 (en) 1969-10-03
BE728484A (en) 1969-08-18
AT303137B (en) 1972-11-10
GB1258134A (en) 1971-12-22

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