DE863830C - Cathode for electron tubes - Google Patents
Cathode for electron tubesInfo
- 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
Links
- 238000005476 soldering Methods 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 8
- 238000009954 braiding Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 2
- 239000010406 cathode material Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
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
Landscapes
- Microwave Tubes (AREA)
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)
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)
| 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 |
-
1950
- 1950-08-20 DE DES18697A patent/DE863830C/en not_active Expired
Cited By (2)
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE863830C (en) | Cathode for electron tubes | |
| DE851832C (en) | Cathode for electron tubes | |
| DE851984C (en) | Grid arrangement for electron tubes | |
| DE517975C (en) | Method for perfecting the vacuum of vacuum tubes with a plurality of metal electrodes by applying a capture material | |
| AT156716B (en) | Electron tube. | |
| AT102214B (en) | Electric heating device, in particular for hot cathodes of discharge tubes. | |
| DE749571C (en) | Indirectly heated glow cathode | |
| DE925243C (en) | Grids for electrical discharge vessels and process for their manufacture | |
| DE899079C (en) | Cathode for electron tubes | |
| DE1079214B (en) | Incandescent cathode for gas or vapor-filled discharge tubes, which consists of directly heated individual elements connected in parallel | |
| DE680064C (en) | Method for joining ceramic bodies to metal | |
| DE905518C (en) | Device for the vacuum-tight fusing of glass tubes with large-area metal parts of electrical discharge vessels, in particular with disk-shaped ducts for cavity resonators | |
| DE896514C (en) | Ultra-short-wave tube arrangement with disk-shaped electrodes and two cup transducers | |
| DE723676C (en) | Getter arrangement for multi-system tubes | |
| DE898488C (en) | Controllable electrical discharge vessel | |
| DE951518C (en) | Process for producing a glow cathode for electrical discharge tubes, in particular for transmission tubes | |
| DE899085C (en) | Flat tube base for electrical discharge tubes | |
| AT124186B (en) | Holding of lead wires inside electron tubes. | |
| DE905515C (en) | Cathode for electron tubes | |
| DE868320C (en) | Electron tubes | |
| AT163995B (en) | Electric discharge tube | |
| DE908166C (en) | Electric gas or vapor filled discharge tubes | |
| DE653904C (en) | Indirectly heated glow cathode for discharge vessels | |
| DE732182C (en) | Incandescent cathode rectifier tubes with gas filling | |
| DE719960C (en) | Process for the production of grid-like electrodes for electrical discharge vessels |