DE576036C - Spiral glow cathode arrangement for electron amplifier tubes - Google Patents
Spiral glow cathode arrangement for electron amplifier tubesInfo
- Publication number
- DE576036C DE576036C DEI35812D DEI0035812D DE576036C DE 576036 C DE576036 C DE 576036C DE I35812 D DEI35812 D DE I35812D DE I0035812 D DEI0035812 D DE I0035812D DE 576036 C DE576036 C DE 576036C
- Authority
- DE
- Germany
- Prior art keywords
- cathode
- amplifier tubes
- spiral
- electron amplifier
- cathode arrangement
- 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
- 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
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
Description
Bei Verstärkersystemen verursachen Geräusche, die von den Vibrationen des Glühfadens herrühren, oft beträchtlicheUnannehmlichkeiten. Die zum Schutz daher vorgeschlagene federnde Anordnung der Elektrodenträger ist in vielen Fällen nicht zweckmäßig, besonders bei einem Elektrodensystem von großen Abmessungen.Amplifier systems cause noise from the vibrations of the filament often result in considerable inconvenience. The one proposed for protection resilient arrangement of the electrode carrier is in many cases not appropriate, especially in the case of an electrode system of large dimensions.
Zur Vermeidung dieser Nachteile ragen bei einer in bekannter Weise aus einem schraubenförmig gewundenen Draht bestehenden Glühkathode erfindungsgemäß die Tragdrähte in die Glühkathodenenden hinein und sind von den Endwindungen der Kathode derart lose umgeben, daß ein leicht reibender Kontakt entsteht.To avoid these disadvantages, protrude in a known manner from a helical coiled wire existing hot cathode according to the invention, the support wires into the hot cathode ends and are of surround the end turns of the cathode so loosely that a slightly rubbing contact arises.
In der Abbildung ist ein Ausführungsbeispiel der Erfindung dargestellt. Die Kathode 4 wird durch eine Drahtspirale gebildet, die oben und unten an Nickeldrähten 14 bzw. 18 aufgehängt ist, wobei diese Drähte dicker sind als der Kathodendraht. Der Draht 14' ist an eine Einführungsleitung in dem Röhrenkolben angeschlossen, während eine zweite Einführungsleitung innerhalb der Röhre an der Außenseite der Anode entlang nach oben führt und dort mit einem Ouerdraht versehen ist, an dem der Draht 18 angebracht ist. Der Innendurchmesser der Drahtspirale ist etwa 0,5 mm, wobei die Spirale in der Mitte etwas ausgezogen ist, wie dies die Abbildung veranschaulicht. Die Kathode umgibt lose die Enden der Drähte 14 und 18, .die etwa 0,3 mm Durchmesser haben und so weit in die Kathodenspule hineinragen, daß ein leicht reibender Kontakt entsteht. Die Enden der Kathode sind an die Drähte 14 und 18 an den Punkten 19 und 20 angeschweißt. Die Reibung an den Enden der Spirale dämpft Vibrationen sehr energisch ab und verhindert das Auftreten von Mikrophongeräuschen.In the figure, an embodiment of the invention is shown. The cathode 4 is formed by a wire spiral attached to nickel wires 14 at the top and bottom and 18, respectively, these wires being thicker than the cathode wire. The wire 14 'is connected to an introduction line in the tubular piston, while a second lead-in line inside the tube along the outside of the anode leads upwards and is provided there with a cross wire to which the wire 18 is attached is. The inner diameter of the wire spiral is about 0.5 mm, with the spiral in the middle is slightly extended, as shown in the illustration. Surrounds the cathode loosely the ends of wires 14 and 18, .the about 0.3 mm in diameter and protrude so far into the cathode coil that a slightly rubbing contact occurs. The ends of the cathode are attached to wires 14 and 18 welded to points 19 and 20. The friction at the ends of the spiral dampens Vibrations very vigorously and prevents the occurrence of microphone noise.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEI35812D DE576036C (en) | Spiral glow cathode arrangement for electron amplifier tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEI35812D DE576036C (en) | Spiral glow cathode arrangement for electron amplifier tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE576036C true DE576036C (en) | 1933-05-06 |
Family
ID=7189079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEI35812D Expired DE576036C (en) | Spiral glow cathode arrangement for electron amplifier tubes |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE576036C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1233062B (en) * | 1964-08-18 | 1967-01-26 | Leybolds Nachfolger E | Holder for a spiral-shaped glow cathode |
-
0
- DE DEI35812D patent/DE576036C/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1233062B (en) * | 1964-08-18 | 1967-01-26 | Leybolds Nachfolger E | Holder for a spiral-shaped glow cathode |
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