AT160558B - Electric discharge tube. - Google Patents

Electric discharge tube.

Info

Publication number
AT160558B
AT160558B AT160558DA AT160558B AT 160558 B AT160558 B AT 160558B AT 160558D A AT160558D A AT 160558DA AT 160558 B AT160558 B AT 160558B
Authority
AT
Austria
Prior art keywords
discharge tube
electrode
electric discharge
secondary emission
emission electrode
Prior art date
Application number
Other languages
German (de)
Original Assignee
Philips Patentverwaltung
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.)
Publication date
Application granted granted Critical
Publication of AT160558B publication Critical patent/AT160558B/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J43/00—Secondary-emission tubes; Electron-multiplier tubes
    • H01J43/02—Tubes in which one or a few electrodes are secondary-electron emitting electrodes

Landscapes

  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Solid Thermionic Cathode (AREA)
  • Microwave Tubes (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Elektrische Entladungsröhre. 
 EMI1.1 
 

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   In der Zeichnung bezeichnet 1 eine indirekt heizbare Kathode einer elektrischen Entladungsröhre, die aus einem Kathodenkörper besteht, innerhalb dessen ein Heizelement angeordnet ist. Diese Kathode ist von einem Steuergitter 2 und einem Schirmgitter 3 umgeben. Die aus der Kathode tretenden Elektronen werden gemäss den durch die gestrichelten Linien   4   angegebenen Elektronenbahnen zu einer Elektrode 5 geführt, die mit einem leicht Sekundärelektronen abgebenden Stoff, z. B. Caesiumoxyd oder Caesium überzogen ist. In geringem Abstand von der Elektrode 5 befindet sich ein Gitter 6, das mit der Anode 7 verbunden ist und die aus der Sekundäremissionselektrode 5 austretenden Sekundärelektronen aus deren Umgebung wegzieht.

   In der Röhre ist ferner ein Schirm S angeordnet, der an einem solehen Potential liegt, dass er die Elektronen gemäss den erwünschten gekrümmten Bahnen sich bewegen lässt. Es ist ferner ein Schirm 9 vorhanden, der so angeordnet ist, dass gegebenenfalls von der Primärkathode abdampfendes Material die Sekundäremissionselektrode nicht erreichen kann.



   <Desc / Clms Page number 1>
 



  Electric discharge tube.
 EMI1.1
 

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   In the drawing, 1 denotes an indirectly heatable cathode of an electrical discharge tube, which consists of a cathode body within which a heating element is arranged. This cathode is surrounded by a control grid 2 and a screen grid 3. The electrons emerging from the cathode are guided according to the electron trajectories indicated by the dashed lines 4 to an electrode 5, which is filled with a substance that easily emits secondary electrons, e.g. B. cesium oxide or cesium is coated. At a short distance from the electrode 5 there is a grid 6 which is connected to the anode 7 and which draws the secondary electrons emerging from the secondary emission electrode 5 away from its surroundings.

   A screen S is also arranged in the tube, which screen is at such a potential that it allows the electrons to move along the desired curved paths. There is also a screen 9, which is arranged in such a way that any material evaporating from the primary cathode cannot reach the secondary emission electrode.

Claims (1)

PATENT-ANSPRUCH : Elektrische Entladungsröhre deren Elektrodensystem unter anderm eine Sekundäremissionselektrode enthält, wobei eine plattenförmige Anode ausserhalb der Bahnen der von der Kathode zur Sekundäremissionselektrode sich bewegenden Elektronen angeordnet ist, dadurch gekennzeichnet, dass im Elektronenweg kurz vor der Sekundäremissionselektrode und ungefähr parallel mit dieser eine mit der Anode leitend verbundene gitterförmige Elektrode angeordnet ist. EMI2.1 PATENT CLAIM: Electrical discharge tube the electrode system of which contains, among other things, a secondary emission electrode, a plate-shaped anode being arranged outside the paths of the electrons moving from the cathode to the secondary emission electrode, characterized in that in the electron path shortly before the secondary emission electrode and approximately parallel to this one conductively connected to the anode grid-shaped electrode is arranged. EMI2.1
AT160558D 1937-02-23 Electric discharge tube. AT160558B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL200824X 1937-02-23

Publications (1)

Publication Number Publication Date
AT160558B true AT160558B (en) 1941-07-25

Family

ID=19778330

Family Applications (1)

Application Number Title Priority Date Filing Date
AT160558D AT160558B (en) 1937-02-23 Electric discharge tube.

Country Status (8)

Country Link
US (1) US2146607A (en)
AT (1) AT160558B (en)
BE (1) BE426512A (en)
CH (1) CH200824A (en)
DE (1) DE740422C (en)
FR (1) FR834094A (en)
GB (1) GB484900A (en)
NL (1) NL48109C (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR857575A (en) * 1939-02-27 1940-09-19 Materiel Telephonique Electronic discharge devices and circuits using them
BE450216A (en) * 1942-04-17
FR894732A (en) * 1942-05-16 1945-01-04 Philips Nv Electric discharge tube comprising a secondary emission electrode
US2422088A (en) * 1944-04-03 1947-06-10 Rca Corp Electronic discriminator
US2577164A (en) * 1945-03-20 1951-12-04 Rca Corp Electronic device
NL72121C (en) * 1945-10-24
GB683061A (en) * 1948-01-24 1952-11-19 Emi Ltd Improvements relating to thermionic valves utilising secondary electron emission amplification
US2559395A (en) * 1948-07-15 1951-07-03 Electrons Inc Controllable electron discharge tube having low tube losses
US2679592A (en) * 1948-08-31 1954-05-25 Rca Corp Generator and frequency control
US2559524A (en) * 1948-10-20 1951-07-03 Rca Corp Electron discharge device of the beam deflection type
US2864026A (en) * 1953-03-20 1958-12-09 Philips Corp Electric discharge tube
US2802127A (en) * 1954-02-03 1957-08-06 Dobischek Dietrich Dynode coating
US3008218A (en) * 1957-04-22 1961-11-14 Nat Broach & Mach Gear tooth chamfering tool

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB443777A (en) * 1934-07-05 1936-03-05 James Dwyer Mcgee Electron discharge amplifiers
US2141322A (en) * 1935-06-25 1938-12-27 Rca Corp Cascaded secondary electron emitter amplifier

Also Published As

Publication number Publication date
US2146607A (en) 1939-02-07
GB484900A (en) 1938-05-11
CH200824A (en) 1938-10-31
FR834094A (en) 1938-11-10
BE426512A (en)
NL48109C (en)
DE740422C (en) 1943-10-20

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