AT139663B - Electric discharge tube. - Google Patents

Electric discharge tube.

Info

Publication number
AT139663B
AT139663B AT139663DA AT139663B AT 139663 B AT139663 B AT 139663B AT 139663D A AT139663D A AT 139663DA AT 139663 B AT139663 B AT 139663B
Authority
AT
Austria
Prior art keywords
discharge tube
electric discharge
cathode
grid
screen grid
Prior art date
Application number
Other languages
German (de)
Original Assignee
Philips Nv
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
Application filed by Philips Nv filed Critical Philips Nv
Application granted granted Critical
Publication of AT139663B publication Critical patent/AT139663B/en

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  • Discharge Lamp (AREA)

Description

  

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  Elektrische Entladungsröhre. 
 EMI1.1 
 

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   Dieses in der Zeichnung   mit bezeichnete Steuergitter   ist um zwei in der Quetschstelle angebrachte Haltedrähte 14 gewickelt. Am oberen Teil dieser Haltedrähte befinden sich zwei isolierende Körper 15, z. B. Glasperlen, an denen ausserdem ein Haltedraht 16 befestigt ist. An letzterem ist bei 17 mittels eines Befestigungsteils 18 die Kathode 19 befestigt. Diese Kathode besteht aus einem beispielsweise aus Nickel hergestellten Kathodenkörper, der mit einer elektronenemittierenden Schicht überzogen ist. Die Kathode wird mittels eines Heizkörpers, z. B. eines aus Molybdän oder Wolfram hergestellten hufeisenförmig gebogenen Drahts, erhitzt, der gegebenenfalls unter Zwischenfügung von Isoliermaterial im Inneren des Kathodenkörpers angeordnet ist. 



   Die hier beschriebene Erfindung kann bei allen Entladungsröhren Anwendung finden, in denen ein Schirmgitter benutzt wird.



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  Electric discharge tube.
 EMI1.1
 

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   This control grid, denoted by in the drawing, is wrapped around two holding wires 14 attached to the pinch point. At the upper part of these holding wires there are two insulating bodies 15, for. B. glass beads, on which a retaining wire 16 is also attached. The cathode 19 is fastened to the latter at 17 by means of a fastening part 18. This cathode consists of a cathode body made, for example, of nickel, which is coated with an electron-emitting layer. The cathode is by means of a heater, e.g. B. a horseshoe-shaped bent wire made of molybdenum or tungsten, which is optionally arranged with the interposition of insulating material in the interior of the cathode body.



   The invention described here can be used with all discharge tubes in which a screen grid is used.

Claims (1)

PATENT-ANSPRUCH : Elektrische Entladungsröhre mit einem Elektrodensystem, das wenigstens ein Steuergitter, eine Anode und ein Schirmgitter umfasst, dadurch gekennzeichnet, dass das Schirmgitter aus Drahtgewebe hergestellt ist, dessen Drahtdicke kleiner als 50 tt ist, während das Schattenverhältnis wenigstens ein EMI2.1 EMI2.2 PATENT CLAIM: Electrical discharge tube with an electrode system which comprises at least a control grid, an anode and a screen grid, characterized in that the screen grid is made of wire mesh, the wire thickness of which is less than 50 tt, while the shadow ratio is at least one EMI2.1 EMI2.2
AT139663D 1931-07-27 1932-07-08 Electric discharge tube. AT139663B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL139663X 1931-07-27

Publications (1)

Publication Number Publication Date
AT139663B true AT139663B (en) 1934-12-10

Family

ID=19776104

Family Applications (1)

Application Number Title Priority Date Filing Date
AT139663D AT139663B (en) 1931-07-27 1932-07-08 Electric discharge tube.

Country Status (1)

Country Link
AT (1) AT139663B (en)

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