DE899079C - Cathode for electron tubes - Google Patents

Cathode for electron tubes

Info

Publication number
DE899079C
DE899079C DES18796A DES0018796A DE899079C DE 899079 C DE899079 C DE 899079C DE S18796 A DES18796 A DE S18796A DE S0018796 A DES0018796 A DE S0018796A DE 899079 C DE899079 C DE 899079C
Authority
DE
Germany
Prior art keywords
cathode
electron tubes
tubular mesh
vacuum
sealed
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
Application number
DES18796A
Other languages
German (de)
Inventor
Hartmut Ganswindt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
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
Priority claimed from DES4023A external-priority patent/DE851832C/en
Application filed by Siemens AG filed Critical Siemens AG
Priority to DES18796A priority Critical patent/DE899079C/en
Application granted granted Critical
Publication of DE899079C publication Critical patent/DE899079C/en
Expired legal-status Critical Current

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
    • H01J1/18—Supports; Vibration-damping arrangements

Description

Das Patent 85 1 8#32- beschäftigt sich mit einer Kathode für- Elektronenröhren, welche aus einem aus den Heizfäden gebildeten rohrförmigen Maschengitter mit ihre beiden Enden abßthließenden Metallringen oder -scheiben, welche gleichzeitig zür Stromzuführung dienen, besteht. Eine zweckmäßige Halterung dieser Kathode wird gemäß der nachstehend beschriebenen Zusatzerfindung vorgeschlagen. Sie ist dadurch #gdkennzeidhnet, daß die rohrförmige Maschengitterkathode an ihren beiden Enden in das Röhrengef äß vakuunirdicht und von den übrigen Elektroden isoliert eingeschmolzen ist.The patent 85 18 # 32 deals with a cathode for electron tubes, which consists of a tubular mesh lattice formed from the heating filaments with metal rings or disks which connect at both ends and which also serve for power supply. Appropriate mounting of this cathode is proposed in accordance with the additional invention described below. It is characterized by the fact that the tubular mesh grid cathode is fused at both ends into the tubular vessel in a vacuum-tight manner and insulated from the other electrodes.

Ein Ausführungsbeispiel einer solchen Kathodenhalterung ist in der Figur schematisch dargestellt. Die rohrför-mige Maschengitterkathode K ist bei diesem Ausführungsbeispiel an ihrem oberen und unteren Ende mit je einem Anschlußstift S, bzw. S2 ausgerüstet, der vaktiumdicht-in die Glashaube H, bzw. 1-12 eingeschmolzen ist. Die Glashaube Hi ist mit ein-em das Gitter G tragenden Metallrin,g M vakuumdicht verschmolzen. Er ist an dem oberen Ende des Anodenzylinders A mittels des Glaszylinders Z angeglast. Die Glashaube H2 ist mit dem unteren Ende des Anodenzylinders A vakuumdicht verschmolzen. Die Stromzuführungen Stj(1 und Stl(2 sind mit den Anschlußstiften S, und S, verhundzen, während die Stromzuführung, zum Gitter G über dieLeitung StG und zur Anode A über die Leitung StA erfolgt. Diese Ausführungsform bietet infolge der beiderseitigen Verschmelzung der rohrfÖrmigen Masdhengitter'kathocle mit dem Röhrengefäß die Möglichkeit, die einzelnen Elektroden konzentrisch auszubilden, so daß hochfrequenzmäßig keine Stoßstellen auftreten. Außerdem wird durch die gleichsinnige Stromzu- und -ableitung für die Kathode in der Achsrichtung -die Zuleitungsin,duktivität für --diese Kathode g.-rin'-.An embodiment of such a cathode holder is shown schematically in the figure. The rohrför-mesh-shaped cathode K is provided in this embodiment at its upper and lower ends, each with a pin S, and S2, respectively, which is in the vaktiumdicht-glass dome H, or fused 1-12. The glass hood Hi is fused in a vacuum-tight manner to a metal ring g M carrying the grid G. It is glazed at the upper end of the anode cylinder A by means of the glass cylinder Z. The glass hood H2 is fused to the lower end of the anode cylinder A in a vacuum-tight manner. The power supply lines Stj (1 and Stl (2 are connected to the connecting pins S, and S, while the power supply to the grid G via the line StG and to the anode A via the line StA. This embodiment offers due to the mutual fusing of the tubular mesh 'Kathocle with the tubular vessel the possibility of concentric design of the individual electrodes so that no high frequency impact points occur. rin'-.

Claims (1)

PATENTANSPRUCH: Kathode für Elektronenröhren, welche aus einem aus den Heizfäden gebildeten rohrförmigen Maschengitter mit ihre bei-den Enden abschließenden Metallringen oder -scheiben, welche gleichzeitig zur Stromzuführung dienen, besteht, nach Patent 85 1 83:2, daidurch gekennzeichnet, daß die rohrförmige Maschengitterkathode an ihren beidenEnden in,dasR&hrengefäß vakuum-,dicht und von den, übrig-en Elektroden isoliert eingeschmülzen ist.PATENT CLAIM: Cathode for electron tubes, which consists of a tubular mesh grid formed from the heating filaments with metal rings or disks terminating at both ends, which also serve to supply power, according to Patent 85 1 83: 2, characterized in that the tubular mesh grid cathode at both ends of the tube is vacuum-sealed, sealed and insulated from the remaining electrodes.
DES18796A 1950-05-17 1950-08-26 Cathode for electron tubes Expired DE899079C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES18796A DE899079C (en) 1950-05-17 1950-08-26 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
DES18796A DE899079C (en) 1950-05-17 1950-08-26 Cathode for electron tubes

Publications (1)

Publication Number Publication Date
DE899079C true DE899079C (en) 1953-12-07

Family

ID=25994722

Family Applications (1)

Application Number Title Priority Date Filing Date
DES18796A Expired DE899079C (en) 1950-05-17 1950-08-26 Cathode for electron tubes

Country Status (1)

Country Link
DE (1) DE899079C (en)

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