DE584305C - Electric discharge tubes with three or more grids formed from helical turns - Google Patents
Electric discharge tubes with three or more grids formed from helical turnsInfo
- Publication number
- DE584305C DE584305C DEN31878D DEN0031878D DE584305C DE 584305 C DE584305 C DE 584305C DE N31878 D DEN31878 D DE N31878D DE N0031878 D DEN0031878 D DE N0031878D DE 584305 C DE584305 C DE 584305C
- Authority
- DE
- Germany
- Prior art keywords
- grids
- discharge tubes
- electric discharge
- helical turns
- grids formed
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J21/00—Vacuum tubes
- H01J21/02—Tubes with a single discharge path
Landscapes
- Discharge Lamp (AREA)
Description
gebildeten Gitternformed grids
Die Erfindung bezieht sich auf eine elektrische Entladungsröhre, insbesondere auf eine solche mit einer Kathode, einer Anode und drei oder mehr aus schraubenförmigen Windungen gebildeten Gittern.The invention relates to an electric discharge tube, in particular to one with a cathode, an anode and three or more of helical ones Grids formed by turns.
Es ist bekannt, in Entladungsröhren mit zwei Gittern, z. B. einem Steuer- und einem Schirmgitter, zwecks Vermeidung eines großen Schirmgitterstromes durch, sekundäre Emission der Anode zwischen dem Schirmgitter und der Anode ein Hilfsgitter anzuordnen, dem ein solches Potential gegeben wird, daß das Entstehen von Schirmgitterströmen infolge der obenerwähnten Ursache verhindert wird. Es wird dadurch'jedoch nicht ein zweiter diesen Entladungsröhren anhaftender Nachteil beseitigt, nämlich das Auftreten von Schirmgitterströmen infolge des Umstandes, daß von der Kathode emittierteIt is known to use two grids in discharge tubes, e.g. B. a tax and a Screen grid, in order to avoid a large screen grid current through, secondary Emission of the anode to arrange an auxiliary grid between the screen grid and the anode, to which such a potential is given that the creation of screen grid currents is prevented due to the above-mentioned cause. It won't do that, though a second disadvantage inherent in these discharge tubes is eliminated, namely occurrence screen grid currents due to the fact that emitted from the cathode
ao primäre Elektronen das Schirmgitter treffen. Es ist bereits gefunden worden, daß letzterer Ubelstand zum Teil dadurch beseitigt werden kann, daß Steuer- und Schirmgitter unmittelbar hintereinander angeordnet und derart gewickelt werden, daß, in Richtung des Elektronenstromes gesehen, die Drähte der beiden Gitter hintereinanderliegen; das dritte sogenannte Hilfsgitter war dabei auf beliebige Weise gewickelt worden.ao primary electrons hit the screen grid. It has already been found that the latter Bad situation can be partially eliminated by the fact that control and screen grid directly arranged one behind the other and wound in such a way that, in the direction of the electron flow seen, the wires of the two grids lie one behind the other; the third so-called The auxiliary grid had been wrapped in any way.
Durch die erfindungsgemäße Ausgestaltung einer Entladungsröhre mit drei oder mehr Gittern werden die Schirmgitterströme auf ein Minimum beschränkt. Nach der Erfindung werden die schraubenförmig gewundenen Gitter bei einer derartigen Entladungsröhre so angeordnet, daß sie, in Richtung des Elektronenstromes gesehen, genau hintereinanderliegen, d. h. daß die Windungen sich decken. Es hat sich gezeigt, daß es gerade bei diesen Entladungsröhren mit drei oder mehr Gittern sehr vorteilhaft ist, die Elektroden auf diese Weise anzuordnen, da hierdurch eine erhebliche Herabsetzung der Gitterströme erzielt wird. Unter Richtung des Elektronenstromes ist dabei im allgemeinen eine Richtung senkrecht zur Kathode zu verstehen. The inventive design of a discharge tube with three or more With grids, the screen grid currents are reduced to a minimum. According to the invention become the helically wound grids in such a discharge tube arranged in such a way that they are exactly one behind the other, seen in the direction of the electron flow, d. H. that the turns coincide. It has been shown that it is precisely with these discharge tubes with three or more grids it is very advantageous to arrange the electrodes in this way, because this way a considerable reduction in the grid currents is achieved. The direction of the electron flow is generally to understand a direction perpendicular to the cathode.
Die Erfindung wird an Hand der Zeichnung, in der eine Entladungsröhre gemäß der Erfindung beispielsweise dargestellt ist, näher erläutert.The invention is based on the drawing, in which a discharge tube according to FIG Invention is illustrated, for example, explained in more detail.
In der Zeichnung bedeutet 1 den Kolben einer elektrischen Entladungsröhre mit einer Quetschstelle 2, durch welche die Zuführungsdrähte 8 und 9 der Kathode, die Zuleitungs- drähte 10, n und 12 der Gitter und der Zuführungsdraht 13 der Anode nach außen geführt sind. Innerhalb der Röhre sind die Kathode 3, die Anode 4 und die Gitter 5, 6 und 7 angeordnet. Diese Gitter sind erfindungsgemäß derart angeordnet, daß, in Richtung des Elektronenstromes gesehen, ihre Windungen hintereinanderliegen. An der oberen Seite der Anode ist ein aus Glas oder einem anderen Isolierstoff bestehender Körper 14 befestigt, in dem die Gitterstäbe angebracht sind und der einen Haken 15 zur Befestigung der Kathode trägt.In the drawing, 1 denotes the piston an electrical discharge tube with a pinch point 2, through which the lead wires 8 and 9 of the cathode, the lead wires 10, n and 12 of the grids and the feeder wire 13 of the anode are led to the outside. Inside the tube are those Cathode 3, anode 4 and grids 5, 6 and 7 are arranged. These grids are according to the invention arranged in such a way that, viewed in the direction of the electron flow, their turns lie one behind the other. At the The upper side of the anode is a body made of glass or some other insulating material 14 attached, in which the bars are attached and one hook 15 for attachment the cathode carries.
Die Erfindung kann selbstverständlich auf alle Entladungsröhren mit drei oder mehr gewickelten Gittern angewendet werden und ist nicht auf die in diesem Ausführungsbeispiel angegebene Anordnung beschränkt.The invention can of course be applied to all discharge tubes having three or more wound ones Grids are applied and is not limited to the arrangement specified in this embodiment.
Sie kann z.B. auch bei Entladungsröhren mit einer indirekt geheizten Kathode oder mit einem waagerecht oder schräg angeordneten Elektrodensystem angewendet werden, und schließlich ist es auch nicht unbedingt erforderlich, daß das zweite Gitter, von der Anode an gerechnet, ein Schirmgitter ist.It can also be used, for example, for discharge tubes with an indirectly heated cathode or are used with a horizontally or diagonally arranged electrode system, and finally it is not absolutely necessary that the second grid from the The anode is a screen grid.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEN31878D DE584305C (en) | Electric discharge tubes with three or more grids formed from helical turns |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEN31878D DE584305C (en) | Electric discharge tubes with three or more grids formed from helical turns |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE584305C true DE584305C (en) | 1933-09-18 |
Family
ID=7346136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEN31878D Expired DE584305C (en) | Electric discharge tubes with three or more grids formed from helical turns |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE584305C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE750696C (en) * | 1933-04-13 | 1945-01-23 | Discharge tubes with a cathode, an anode and one or more grid electrodes in between for the purpose of reinforcement, vibration generation or rectification | |
| DE764838C (en) * | 1936-06-13 | 1954-10-18 | Siemens & Halske A G | Secondary electron multiplier, consisting of a photocathode with one or more grid-shaped impact electrodes, which are connected to increasing voltages and which are composed of impact plates directed upright against the flow of electrons |
-
0
- DE DEN31878D patent/DE584305C/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE750696C (en) * | 1933-04-13 | 1945-01-23 | Discharge tubes with a cathode, an anode and one or more grid electrodes in between for the purpose of reinforcement, vibration generation or rectification | |
| DE764838C (en) * | 1936-06-13 | 1954-10-18 | Siemens & Halske A G | Secondary electron multiplier, consisting of a photocathode with one or more grid-shaped impact electrodes, which are connected to increasing voltages and which are composed of impact plates directed upright against the flow of electrons |
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