DE370292C - Hot cathode tubes for generating electrical vibrations, especially for wireless telegraphy purposes - Google Patents

Hot cathode tubes for generating electrical vibrations, especially for wireless telegraphy purposes

Info

Publication number
DE370292C
DE370292C DEG46479D DEG0046479D DE370292C DE 370292 C DE370292 C DE 370292C DE G46479 D DEG46479 D DE G46479D DE G0046479 D DEG0046479 D DE G0046479D DE 370292 C DE370292 C DE 370292C
Authority
DE
Germany
Prior art keywords
purposes
generating electrical
cathode tubes
wireless telegraphy
hot cathode
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
DEG46479D
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.)
Telefunken AG
Original Assignee
Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
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 Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH filed Critical Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
Priority to DEG46479D priority Critical patent/DE370292C/en
Application granted granted Critical
Publication of DE370292C publication Critical patent/DE370292C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/28—Non-electron-emitting electrodes; Screens
    • H01J19/30—Non-electron-emitting electrodes; Screens characterised by the material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
    • H01J2893/0012—Constructional arrangements
    • H01J2893/0019—Chemical composition and manufacture
    • H01J2893/002—Chemical composition and manufacture chemical

Landscapes

  • Sampling And Sample Adjustment (AREA)

Description

Glühkathodenröhre zur Erzeugung elektrischer Schwingungen, insbesondere für die Zwecke der drahtlosen Telegraphie. In Hochvakuumglühkathodenröhren, wie sie insbesondere für die Zwecke der drahtlosen Telegraphie zur Schwingungserzeugung benutzt werden, verwendet man vorzugsweise als Anodenmaterial Wolfram, Tantal, Molybdän oder ähnliche wertvolle Stoffe. Der Ersatz dieser Metalle idurch billigere Materialien ist recht schwierig, da die Bedingungen für die hohe und reine Elektronenemission dann nur schwer aufrechterhalten werden können. Der Grund hierfür ist darin zu suchen, daß aus den Ersatzmetallen nach beendigtem Entlüftungsprozeß,besonders bei Belastung .der Röhre, immer noch Gase frei werden. Infolgedessen tritt bei Verwendung von Ersatzstoffen sehr rasch eine Verschlechterung der Wirkungsweise der Röhre ein, da diese ja im wesentlichen Maße von !der Güte des Vakuums abhängt.Hot cathode tubes for generating electrical vibrations, in particular for the purpose of wireless telegraphy. In high vacuum incandescent cathode tubes, such as they are used in particular for the purpose of wireless telegraphy to generate vibrations are used, are preferably used as anode material tungsten, tantalum, molybdenum or similar valuable substances. Replacing these metals with cheaper materials is quite difficult because of the conditions for high and pure electron emission then can only be sustained with difficulty. The reason for this is to be found in that from the replacement metals after the venting process is complete, especially when exposed to stress .the tube, gases are still being released. As a result, when using Substitutes very quickly deteriorate the functioning of the tube, since this depends essentially on the quality of the vacuum.

Die vorgenannten wertvollen Materialien, wie Tantal, Wolfram, Molybdän usw., haben nun, wie Versuche ergaben, die Eigenschaft, daß sie, wenn sie beim Pumpprozeß genügend von Gasen befreit sind, späterhin, besonders bei Belastung, wieder Gase aufnehmen.The aforementioned valuable materials, such as tantalum, tungsten, molybdenum etc., as tests have shown, they have the property that when they are used during the pumping process are sufficiently freed of gases, later, especially under stress, gases again take up.

Gemäß der vorliegenden Erfindung wird nun von dieser Eigenschaft der wertvollen Materialien in ider Weise Gebrauch gemacht, daß der wesentlichste Aufbau der Anode bzw. der Anoden aus minderwertigem Material, z. B. Eisen, hergestellt ist, während an den meist beanspruchten Stellen der Anode Teilstücke hochwertigen Metalles, z. B. von Wolfram, Tantal, Mol3#bidän in solcher Ausdehnung angebracht sind, idaß idie aus den minderwertigen Metallen freiwerdenden Gase von den Teilstücken hochwertigen Metalles absorbiert werden. Die Edelmetalle Tantal, Wolfram oder Molyb@dän wirken,dann wie ein Schwamm, inrdem sie automatisch durch Aufsaugen der aus dem minderwertigen Metall freiwerdenden Gase Idas Vakuum der Röhre auf konstantem Wert erhalten.According to the present invention, this property is now the Valuable materials are used in the same way that the most essential structure the anode or anodes made of inferior material, e.g. B. iron is, while parts of the anode are of high quality in the most stressed areas Metal, e.g. B. of tungsten, tantalum, Mol3 # bidän attached to such an extent are, i that the gases released from the inferior metals from the pieces high quality metal are absorbed. The precious metals tantalum, tungsten or molyb @ den then act like a sponge, inrdem they automatically absorb the from the Inferior metal released gases Idas vacuum the tube at a constant value obtain.

Claims (1)

PATENTANSPRUCH: Glühkathadenröhre zur Erzeugung elektrischer Schwingungen, insbesondere für die Zwecke der drahtlosen Telegraphie, dadurch gekennzeichnet, daß der wesentlichste Aufbau ider Anode bzw. der Anoden aus minderwertigem Material, z. B. Eisen, hergestellt -ist, während an den meist beanspruchten Stellen der Anode Teilstücke hochwertigen Metalles, z. B. von Wolfram; Tantal, Molybdärn, in solcher Ausdehnung angebracht sind', daß die aus den minderwertigen Metallen, freiwerdenden Gase von.. den Teilstücken hochwertigen Metalles absorbiert werden.PATENT CLAIM: Incandescent cathade tube for generating electrical vibrations, especially for the purposes of wireless telegraphy, characterized in that the most essential structure ider anode or the anodes made of inferior material, e.g. B. iron, made - is, while at the most stressed parts of the anode sections of high quality metal, z. B. of tungsten; Tantalum, molybdenum, are attached to such an extent that the gases released from the inferior metals are absorbed by the pieces of high-quality metal.
DEG46479D 1918-03-29 1918-03-29 Hot cathode tubes for generating electrical vibrations, especially for wireless telegraphy purposes Expired DE370292C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEG46479D DE370292C (en) 1918-03-29 1918-03-29 Hot cathode tubes for generating electrical vibrations, especially for wireless telegraphy purposes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG46479D DE370292C (en) 1918-03-29 1918-03-29 Hot cathode tubes for generating electrical vibrations, especially for wireless telegraphy purposes

Publications (1)

Publication Number Publication Date
DE370292C true DE370292C (en) 1923-03-01

Family

ID=7128055

Family Applications (1)

Application Number Title Priority Date Filing Date
DEG46479D Expired DE370292C (en) 1918-03-29 1918-03-29 Hot cathode tubes for generating electrical vibrations, especially for wireless telegraphy purposes

Country Status (1)

Country Link
DE (1) DE370292C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1042785B (en) * 1953-08-24 1958-11-06 Gen Electric Infrared ray generator
DE202012104021U1 (en) 2012-10-19 2012-12-03 Daniel Korb Fitment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1042785B (en) * 1953-08-24 1958-11-06 Gen Electric Infrared ray generator
DE202012104021U1 (en) 2012-10-19 2012-12-03 Daniel Korb Fitment

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