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DE943848C - Glow discharge tube with a ring-shaped cathode - Google Patents

Glow discharge tube with a ring-shaped cathode

Info

Publication number
DE943848C
DE943848C DEP10485A DEP0010485A DE943848C DE 943848 C DE943848 C DE 943848C DE P10485 A DEP10485 A DE P10485A DE P0010485 A DEP0010485 A DE P0010485A DE 943848 C DE943848 C DE 943848C
Authority
DE
Germany
Prior art keywords
discharge tube
glow discharge
cathode
ring
shaped cathode
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
DEP10485A
Other languages
German (de)
Inventor
Aldo Patriarca
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.)
Patelhold Patenverwertungs and Elektro-Holding AG
Original Assignee
Patelhold Patenverwertungs and Elektro-Holding 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
Application filed by Patelhold Patenverwertungs and Elektro-Holding AG filed Critical Patelhold Patenverwertungs and Elektro-Holding AG
Application granted granted Critical
Publication of DE943848C publication Critical patent/DE943848C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/38—Cold-cathode tubes
    • H01J17/40—Cold-cathode tubes with one cathode and one anode, e.g. glow tubes, tuning-indicator glow tubes, voltage-stabiliser tubes, voltage-indicator tubes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/64—Cathode glow lamps
    • 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
    • H01J2893/0067—Electrode assembly without control electrodes, e.g. including a screen

Landscapes

  • Discharge Lamp (AREA)

Description

Die Erfindung betrifft eine Glimmentladungsröhre mit ringförmiger Kathode, die eine relativ hohe Zündspannung (über etwa 300 V) aufweist, und bezweckt, die Konstanz der Zündspannung zu verbessern. Dazu ist es notwendig, daß die Entladung bei jeder Zündung von genau definierten Punkten der Kathode ausgeht und nicht von Punkten, deren Lage durch Zufälligkeiten gegeben ist. Dies wird gemäß der Erfindung dadurch erreicht, daß die der Anode zugewandte Seite der Kathode eine geringe Anzahl Spitzen aufweist. Es sollen ihrer höchstens etwa fünf sein; und damit ste11t sich die Röhre gemäß der Erfindung in Gegensatz zu einer bekanntgewordenen Glimmentladungsröhre mit guter Konstanz der Brennspannung, deren Kathode zwecks Vergrößerung ihrer Oberfläche eine große Anzahl von Vertiefungen aufweist.The invention relates to a glow discharge tube with a ring-shaped cathode, which has a relatively high ignition voltage (above approximately 300 V) and is intended to improve the constancy of the ignition voltage. For this it is necessary that the discharge starts from precisely defined points on the cathode with each ignition and not from points whose position is determined by randomness. This is achieved according to the invention in that the side of the cathode facing the anode has a small number of tips. There should be at most about five of them; and thus the tube according to the invention stands in contrast to a known glow discharge tube with good constancy of the operating voltage, the cathode of which has a large number of depressions in order to increase its surface area.

Die Erfindung sei an Hand der Zeichnung erläutert. Diese zeigt eine im Längsschnitt gezeichnete Glimmentladungsröhre mit Glasgefäß i, mit einer ringförmigen Kathode 2 und einer stabförmigen Anode 3, .welch letztere sich in dem Isolierrohr 6 befindet und mit dem Sockelstift 5 leitend verbunden ist. Die Isoliermasse 7 dient zur Ergänzung der Isolierung der Anode in der Nachbarschaft des Sockelstiftes 5. Die Kathode, welche vom Sockelstift 4 getragen wird und mit diesem leitend verbunden ist, weist, in Anwendung des Erfindungsgedankens, drei Spitzen 2" auf hin der Zeichnung sind nur zwei sichtbar), welche sich auf ;der der Anode 3 zugewandten Seite der Kathode befinden. Eine besonders einfache Art, solche Spitzen herzustellen,.besteht im Eindrücken des Kathodenbleches von der Unterseite her.The invention is explained with reference to the drawing. This shows a Glow discharge tube drawn in longitudinal section with glass vessel i, with an annular one Cathode 2 and a rod-shaped anode 3, .which latter is in the insulating tube 6 is located and is conductively connected to the base pin 5. The insulating compound 7 is used to supplement the insulation of the anode in the vicinity of the base pin 5. The cathode, which is carried by the base pin 4 and is conductively connected to it is, has, in application of the inventive concept, three points 2 "on the drawing only two are visible), which are located on the side facing the anode 3 of the Cathode. There is a particularly simple way of producing such tips by pressing in the cathode sheet from the underside.

Die Zeichnung zeigt noch eine Steuerelektrode in Form der Spitze io, -welche mit dem Sockelstift 13 leitend verbunden und von der Isolierstoffhülle 12 umgeben' ist. Sie durchsetzt die Kathode in der Öffnung ii. Die gezeigte Form der Steuerelektrode trägt ebenfalls dazu bei, die Entladung an bestimmter Stelle einsetzen zu lassen.The drawing also shows a control electrode in the form of the tip io, -which is conductively connected to the base pin 13 and from the insulating sleeve 12 is surrounded '. It penetrates the cathode in the opening ii. The shown form of the Control electrode also helps to set the discharge at a certain point allow.

Claims (2)

PATENTANSPRÜCHE: i. Glimmentladungsröhre mit ringförmiger Kathode, dadurch gekennzeichnet, daß zur Erzielung einer guten Konstanz der Zündspannung die der Anode zugekehrte Seite der Kathode eine geringe Anzahl Spitzen aufweist. PATENT CLAIMS: i. Glow discharge tube with an annular cathode, characterized in that the side of the cathode facing the anode has a small number of tips in order to achieve good constancy of the ignition voltage. 2. Glimmentladungsröhre nach Anspruch i, dadurch gekennzeichnet, daß die Spitzen durch Eindrücken des Kathodenbleches gebildet sind. Angezogene Druckschriften: Deutsche Pätentschrift Nr. 903 964.2. glow discharge tube according to claim i, characterized in that the tips are formed by pressing in the cathode plate. Cited publications: German Patent Publication No. 903 964.
DEP10485A 1953-09-07 1953-09-17 Glow discharge tube with a ring-shaped cathode Expired DE943848C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH943848X 1953-09-07

Publications (1)

Publication Number Publication Date
DE943848C true DE943848C (en) 1956-06-01

Family

ID=4549613

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP10485A Expired DE943848C (en) 1953-09-07 1953-09-17 Glow discharge tube with a ring-shaped cathode

Country Status (1)

Country Link
DE (1) DE943848C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1031430B (en) * 1956-06-22 1958-06-04 Philips Nv Glow discharge tubes with an auxiliary electrode that extends into an opening in the cathode

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE903964C (en) * 1942-12-05 1954-02-11 Stabilovolt G M B H Cathode for glow discharge tubes to keep the voltage constant

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE903964C (en) * 1942-12-05 1954-02-11 Stabilovolt G M B H Cathode for glow discharge tubes to keep the voltage constant

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1031430B (en) * 1956-06-22 1958-06-04 Philips Nv Glow discharge tubes with an auxiliary electrode that extends into an opening in the cathode

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