DE889810C - Cold cathode for gas discharge tubes, especially glow tubes and surge arresters - Google Patents
Cold cathode for gas discharge tubes, especially glow tubes and surge arrestersInfo
- Publication number
- DE889810C DE889810C DES10757D DES0010757D DE889810C DE 889810 C DE889810 C DE 889810C DE S10757 D DES10757 D DE S10757D DE S0010757 D DES0010757 D DE S0010757D DE 889810 C DE889810 C DE 889810C
- Authority
- DE
- Germany
- Prior art keywords
- tubes
- gas discharge
- cold cathode
- cathode
- surge arresters
- 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
- 239000011810 insulating material Substances 0.000 claims description 3
- 239000004065 semiconductor Substances 0.000 claims 2
- 239000000843 powder Substances 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J17/00—Gas-filled discharge tubes with solid cathode
- H01J17/02—Details
- H01J17/04—Electrodes; Screens
- H01J17/06—Cathodes
- H01J17/066—Cold cathodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0064—Tubes with cold main electrodes (including cold cathodes)
- H01J2893/0065—Electrode systems
- H01J2893/0066—Construction, material, support, protection and temperature regulation of electrodes; Electrode cups
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Description
Die Erfindung betrifft eine kalte Kathode für elektrische Gasentladungsgefäße, insbesondere für. Glimmlampen und Spannungsableiter. Es ist bereits vorgeschlagen worden, kalte Kathoden für derartige Zwecke, aus einer Mischung eines Metalls mit einem Metalloxvd, z. B. von Aluminium mit Aluminiumoxyd, herzustellen. Solche Kathodtn haben den Vorteil, da@ß die Glimmentladung bereits bei verhältnismäßig kleinen Stromstärken in einen Lichtbogen übergeht.The invention relates to a cold cathode for electrical gas discharge vessels, especially for. Glow lamps and voltage arresters. It's already suggested been, cold cathodes for such purposes, made from a mixture of a metal with a metal oxide, e.g. B. of aluminum with aluminum oxide. Such cathodes have the advantage that the glow discharge occurs even at relatively low currents goes into an arc.
Will man die beschriebene Kathode für den Betrieb von Gl.immentla-dungsgefä:ßen, insbesondere Spannungsableitern, praktisch verwenden, dann muß man darauf achten, daß die Kathode einerseits den Beanspruchungen des Betriebes Widerstand leistet, andererseits auch leicht herstellbar ist. Diese Forderungen erfüllt die Kathode nach der Erfindung. Erfindungsgemäß besteht eine kalte Katho?de für Gasentl-2dungsgefäße, insbesondere GLirnmentladungsröhren, aus einem metallischen Grundkörper, insbesondere aus Blech, in dessen Oberfläche isolierende oder halbleitende Stoffe, insbesondere Metalloxyde, unter Druck eingefügt sind. Die Bleche können z. B. aus Aluminium, Kupfer, Eisen u. a. bestehen, während das - am besten in pulvriger oder körniger Form eingebrachte isolierende Material z. B. Aluminiumoxyd sein kann. Das isolierende oder halibleiten!de Material kann in die Oberfläche des metallischen Grundkörpers, gegebenenfalls unter Anwendung von Hitze, eingewalzt, eingepreßt oder eingehämmert sein. i3,1-an erreicht durch die Erfindung dien Vorteil, ,daß d-ie Kathodenkörper leicht berste llblar sind und daß trotzdem der isolierende Belag eine hohe Festigkeit und die ganze Kathode eine hohe Widerstandsfähigkeit gegen Beanspruchung im Betriebe aufweisen. Ein weiterer Vorteil ist das geringe Gewicht der Kathode.If you want to use the cathode described for the operation of Gl. Discharge vessels, especially voltage arresters, practical use, then one must pay attention to that the cathode on the one hand offers resistance to the stresses and strains of operation, on the other hand is also easy to manufacture. The cathode fulfills these requirements according to the invention. According to the invention there is a cold cathode for gas discharge vessels, in particular incandescent discharge tubes, made from a metallic base body, in particular made of sheet metal, in the surface of which insulating or semiconducting substances, in particular Metal oxides, are inserted under pressure. The sheets can, for. B. made of aluminum, Copper, iron, etc. insist while that - preferably in powdery or grainy Form introduced insulating material z. B. aluminum oxide can be. The insulating or semi-conductive material can get into the surface of the metallic base body, possibly with the application of heat, rolled in, pressed in or hammered in be. By means of the invention, i3,1-an achieves the advantage that the cathode body are easily burstable and that the insulating covering is nevertheless very strong and the entire cathode has a high level of resistance to operational stress exhibit. Another advantage is the low weight of the cathode.
Eire Kathode nach der Erfindung zeigt die Figur schematisch. Mit @i ist ein Blech, z. B. aus Aluminium, bezeichnet, in welches ein Belag 2, z. B. aus Aluminiumoxyd, eingewalzt ist. Die Befestigung des Haltedrahtes 3 in dem Kathadenkörper erfolgt am besten in .der Weise, daß der Draht 3 durch einen ,Schlitz in denKathodenkörper gesteckt und dieser durch Deformation des Materials des Kathodenkörpers in der Umgebung des Schlitzes verengt wird. Dadurch wird der Haltedraht 3 fest eingezwängt, und die gewünschte feste Verbindung ist geschaffen.A cathode according to the invention is shown schematically in the figure. With @i is a sheet, e.g. B. made of aluminum, in which a covering 2, z. B. off Aluminum oxide, is rolled in. The fastening of the holding wire 3 in the cathode body is best done in a way that the wire 3 through a slot in the cathode body plugged and this by deformation of the material of the cathode body in the area of the slot is narrowed. As a result, the holding wire 3 is firmly wedged, and the desired permanent connection is created.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES10757D DE889810C (en) | 1942-09-24 | 1942-09-24 | Cold cathode for gas discharge tubes, especially glow tubes and surge arresters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES10757D DE889810C (en) | 1942-09-24 | 1942-09-24 | Cold cathode for gas discharge tubes, especially glow tubes and surge arresters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE889810C true DE889810C (en) | 1953-09-14 |
Family
ID=7473433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DES10757D Expired DE889810C (en) | 1942-09-24 | 1942-09-24 | Cold cathode for gas discharge tubes, especially glow tubes and surge arresters |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE889810C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1127490B (en) * | 1960-10-04 | 1962-04-12 | Deutsche Bundespost | Gas discharge tubes |
-
1942
- 1942-09-24 DE DES10757D patent/DE889810C/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1127490B (en) * | 1960-10-04 | 1962-04-12 | Deutsche Bundespost | Gas discharge tubes |
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