DE683835C - Process for the production of electron tubes with shielded heating cables - Google Patents

Process for the production of electron tubes with shielded heating cables

Info

Publication number
DE683835C
DE683835C DEL82937D DEL0082937D DE683835C DE 683835 C DE683835 C DE 683835C DE L82937 D DEL82937 D DE L82937D DE L0082937 D DEL0082937 D DE L0082937D DE 683835 C DE683835 C DE 683835C
Authority
DE
Germany
Prior art keywords
production
shielded
electron tubes
heating cables
layer
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
DEL82937D
Other languages
German (de)
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.)
Loewe Opta GmbH
Original Assignee
Loewe Opta GmbH
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 Loewe Opta GmbH filed Critical Loewe Opta GmbH
Priority to DEL82937D priority Critical patent/DE683835C/en
Application granted granted Critical
Publication of DE683835C publication Critical patent/DE683835C/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

Landscapes

  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)

Description

Verfahren zur Herstellung von Elektronenröhren mit abgeschirmten Heizleitungen Gegenstand der Erfindung ist ein Verfahren zur Herstellung von Elektronenröhren mit abgeschirmten Heizleitungen in der Röhre.Process for the production of electron tubes with shielded heating cables The invention relates to a process for the production of electron tubes with shielded heating cables in the tube.

Gemäß der Erfindung soll die Metallschicht einer solchen Abschirmung, die aus einer auf dem abzuschirmenden Leiter aufgebrachten Isolationsschicht und einer auf dieser Isolationsschicht angeordneten Metallschicht besteht, nach erfolgter Montage des abzuschirmenden Heizleiters in der Röhre zugleich mit der Herstellung der Emissionsschicht der Kathode durch Verdampfen des gleichen Metalls hergestellt werden, beispielsweise durch Aufstäubung von Barium. Die Anordnung kann so getroffen sein, daß die leitende Abschirmschicht unmittelbar mit der Emissionsschicht der Kathode durch das aufgestäubte Metall leitend verbunden ist.According to the invention, the metal layer of such a shield, from an insulation layer applied to the conductor to be shielded and a metal layer arranged on this insulation layer exists, after Installation of the heating conductor to be shielded in the tube at the same time as production the emission layer of the cathode is made by evaporating the same metal , for example by atomizing barium. The arrangement can be made in this way be that the conductive shielding layer directly with the emission layer of the Cathode is conductively connected by the sputtered metal.

Auf:dese Weise wird Beine @einfache, massenfabrikatorische Herstellung ermöglicht und trotz Beibehaltung der üblichen Röhrenkonstruktion eine wirksame Abschirmung erreicht. Neben der wesentlichen Vereinfachung des Fabrikationsvorgangs wird ein Abbröckeln der Isolationsschicht während der Montage vermieden und die Herstellung eines. guten Kontaktes zwischen der Emissionsschicht der Kathode und der metallischen Abschirmung n *t u Sicherheit gewährleistet.In this way, legs become easy, mass-produced enables and, despite maintaining the usual tube construction, an effective one Shielding achieved. In addition to the significant simplification of the manufacturing process a crumbling of the insulation layer during assembly is avoided and the Making a. good contact between the emission layer of the cathode and the metallic shield n * t u security guaranteed.

Die Isolationsschicht kann zweckmäßig aus Zirkonoxyd bestehen, die Emissions- und die Ahschirmschicht durch Zerstäuben von Barium hergestellt werden.The insulation layer can expediently consist of zirconium oxide Emission layer and the shield layer are produced by sputtering barium.

Claims (1)

PATENTANSPRÜCHE: z. Verfahren zur Herstellung von Elektronenröhren mit abgeschirmten Heizleitungen, auf deren Kathode eine hochemittierende Metallschicht aufgebracht wird, dadurch - gekennzeichnet, daß die Emissionsschicht der Kathode und die leitenden Belegungen der aus einer Isolationsschicht und einer Metallschicht bestehenden Abschirmung durch Verdampfung des gleichen Metalls erst nach erfolgter Montage des abzuschirmenden Heizleiters in der Röhre auf denselben aufgebracht werden. a. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß die Isolationsschicht aus Zirkonoxyd hergestellt wird. -3. Elektronenröhre, hergestellt nachdem Verfahren gemäß Anspruch i und a.PATENT CLAIMS: e.g. Process for the manufacture of electron tubes with shielded heating cables with a highly emissive metal layer on their cathode is applied, characterized in that the emission layer of the cathode and the conductive coverings of an insulation layer and a metal layer existing shielding by evaporation of the same metal only after it has taken place Assembly of the heating conductor to be shielded in the tube can be applied to the same. a. Method according to Claim i, characterized in that the insulation layer is made from zirconium oxide. -3. Electron tube manufactured by the process according to claim i and a.
DEL82937D 1928-04-08 1928-04-08 Process for the production of electron tubes with shielded heating cables Expired DE683835C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEL82937D DE683835C (en) 1928-04-08 1928-04-08 Process for the production of electron tubes with shielded heating cables

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL82937D DE683835C (en) 1928-04-08 1928-04-08 Process for the production of electron tubes with shielded heating cables

Publications (1)

Publication Number Publication Date
DE683835C true DE683835C (en) 1939-11-16

Family

ID=7285363

Family Applications (1)

Application Number Title Priority Date Filing Date
DEL82937D Expired DE683835C (en) 1928-04-08 1928-04-08 Process for the production of electron tubes with shielded heating cables

Country Status (1)

Country Link
DE (1) DE683835C (en)

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