DE863830C - Cathode for electron tubes - Google Patents

Cathode for electron tubes

Info

Publication number
DE863830C
DE863830C DES18697A DES0018697A DE863830C DE 863830 C DE863830 C DE 863830C DE S18697 A DES18697 A DE S18697A DE S0018697 A DES0018697 A DE S0018697A DE 863830 C DE863830 C DE 863830C
Authority
DE
Germany
Prior art keywords
cathode
soldering
electron tubes
filaments
power supply
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
DES18697A
Other languages
German (de)
Inventor
Hartmut Ganswindt
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.)
Siemens AG
Original Assignee
Siemens AG
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 DES4023A external-priority patent/DE851832C/en
Application filed by Siemens AG filed Critical Siemens AG
Priority to DES18697A priority Critical patent/DE863830C/en
Application granted granted Critical
Publication of DE863830C publication Critical patent/DE863830C/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

Description

Kathode für Elektronenröhren Das Patent 851 832 beschäftigt sich mit einer Kathode für Elektronenröhren, welche aus einem aus den Heizfäden gebildeten rohrförmigen Maschengitter mit ihre beiden Enden abschließenden Metallringen oder -scheiben, welche gleichzeitig zur Stromzuführung dienen, besteht. Diese rohrförmige Maschengitterkathode kann aus einer Vielzahl von rechts- und linksgängigen Spiralen bzw. spiral- oder ellipsenförmigen Abschnitten oder in irgendeiner anderen Weise geführten Heizfäden bestehen. Gegenstand der nachstehend beschriebenen Zusatzerfindung ist eine zweckmäßige mechanische Verbindung dieser Heizfäden miteinander und/oder mit ihre beiden Enden abschließenden, gegebenenfalls zur Stromzuführung dienenden Metallteilen, zwecks Aufbaues der rohrförmigen: Maschengitterkathode.Cathode for electron tubes The patent 851 832 deals with a cathode for electron tubes, which is formed from one of the filaments tubular mesh with metal rings terminating at both ends or -discs, which also serve to supply power. This tubular Mesh cathode can be made from a variety of right-handed and left-handed spirals or spiral or elliptical sections or in any other way guided filaments exist. Subject of the additional invention described below is an appropriate mechanical connection of these filaments with each other and / or with their two ends terminating, possibly serving for power supply Metal parts for the purpose of building the tubular: mesh cathode.

Es -ist bereits vorgeschlagen worden, die einzelnen Heizfäden miteinander und/oder mit den Meta11-teilen zu verschweißen. Gemäß der Zusatzerfindung soll die Verbindung der einzelnen Heizfäden miteinander und/oder mit den gegebenenfalls zur Stromzuführung dienenden Metallteilen zu einer rohrförmigen Maschengitterkathode durch Löten oder Verklemmen bzw. Verflechten erfolgen.It has already been proposed to connect the individual filaments to one another and / or welded to the Meta11 parts. According to the additional invention, the Connection of the individual filaments with one another and / or with the optionally for Power supply serving metal parts to a tubular mesh grid cathode be done by soldering or clamping or braiding.

Beim Löten oder Verflechten der Heizfäden an ihren Kreuzungsstellen sind die spröden Kathodenfäden nicht so sehr oder überhaupt nicht der Gefahr einer Zerstörung wie beim Verschweißen ausgesetzt, da das Löten bei einer gegenüber dem Schweißen niedrigeren Temperatur bzw. das Verflechten bei üblicher Raumtemperatur das spröde Kathodenmaterial thermisch nicht belastet. Das gleiche gilt für das Löten oder Verklemmen der Heizfäden mit den abschließenden, gegebenenfalls zur Stromzuführung dienenden Metallteilen, Hinzu kommt noch, daß die Heizfäden beispielsweise nicht beiderseitig an jedem Maschengitterende von je einem Metallring zwecks Durchschweißens abgedeckt zu werden brauchen, sondern: jeweils nur unter Verwendung je eines. Ringes am Maschengitterende verlötet werden können, so daß die Güte des Verlötens besser zu beobachten ist als das Durchschweißen zwischen zwei metallischen Ringen. Das Löten kann zweckmäßig im Vakuum mittels Hochfrequenzerhitzung erfolgen, nachdem die Lötstellen mit einer zum Löten dienenden Metallpaste bestrichen sind.When soldering or braiding the filaments at their crossing points the brittle cathode filaments are not so much or not at all of the danger one Destruction as exposed when welding, since the soldering at one compared to the Welding at a lower temperature or braiding at normal room temperature the brittle cathode material is not thermally stressed. The same goes for soldering or jamming of the filaments with the final ones, if necessary for power supply serving metal parts, in addition, the heating filaments for example not on both sides at each mesh end of a metal ring for the purpose of welding through need to be covered, but: only using one each. Ring can be soldered at the end of the mesh, so that the quality of the soldering better can be observed as the welding through between two metallic rings. That Soldering can expediently take place in a vacuum by means of high-frequency heating after the soldering points are coated with a metal paste used for soldering.

Claims (1)

PATENTANSPRUCH: Kathode für Elektronenröhren, welche aus den.Heizfäden gebildeten rohrförmigen.Maschengitter mit ihre beiden Enden abschließenden Metallringen oder -scheiben., welche gleichzeitig zur Stromzuführung dienen, besteht, nach Patent 851 832, dadurch gekennzeichnet, daß die einzelnen Haizfäden miteinander und/oder. mit den abschließenden, gegebenenfalls zur Stromzuführung dienenden Metallringen und/oder -scheiben durch Löten oder Verklemmen bzw. Verflechten mechanisch verbunden -sind.PATENT CLAIM: Cathode for electron tubes, which consists of tubular mesh grids formed from den.Heizfäden with their two ends closing metal rings or disks, which serve at the same time for power supply, according to Patent 851 832, characterized in that the individual Haizfäden with each other and / or . are mechanically connected to the final metal rings and / or disks, which may be used for power supply, by soldering or clamping or braiding.
DES18697A 1950-05-17 1950-08-20 Cathode for electron tubes Expired DE863830C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES18697A DE863830C (en) 1950-05-17 1950-08-20 Cathode for electron tubes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DES4023A DE851832C (en) 1950-05-17 1950-05-17 Cathode for electron tubes
DES18697A DE863830C (en) 1950-05-17 1950-08-20 Cathode for electron tubes

Publications (1)

Publication Number Publication Date
DE863830C true DE863830C (en) 1953-01-19

Family

ID=25994720

Family Applications (1)

Application Number Title Priority Date Filing Date
DES18697A Expired DE863830C (en) 1950-05-17 1950-08-20 Cathode for electron tubes

Country Status (1)

Country Link
DE (1) DE863830C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1009314B (en) * 1953-02-10 1957-05-29 Telefunken Gmbh Incandescent cathode for electrical discharge vessels, especially transmission tubes
DE1034276B (en) * 1952-03-28 1958-07-17 Thomson Houston Comp Francaise Immediately heated cathode for electron tubes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1034276B (en) * 1952-03-28 1958-07-17 Thomson Houston Comp Francaise Immediately heated cathode for electron tubes
DE1009314B (en) * 1953-02-10 1957-05-29 Telefunken Gmbh Incandescent cathode for electrical discharge vessels, especially transmission tubes

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