ES208641A1 - Un tubo de descarga eléctrica - Google Patents

Un tubo de descarga eléctrica

Info

Publication number
ES208641A1
ES208641A1 ES0208641A ES208641A ES208641A1 ES 208641 A1 ES208641 A1 ES 208641A1 ES 0208641 A ES0208641 A ES 0208641A ES 208641 A ES208641 A ES 208641A ES 208641 A1 ES208641 A1 ES 208641A1
Authority
ES
Spain
Prior art keywords
alkaline earth
earth metal
supply
carbide
oxide
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
ES0208641A
Other languages
English (en)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken 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 Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of ES208641A1 publication Critical patent/ES208641A1/es
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
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H01J1/28—Dispenser-type cathodes, e.g. L-cathode
    • 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
    • H01J1/14—Solid thermionic cathodes characterised by the material

Landscapes

  • Discharge Lamp (AREA)
  • Solid Thermionic Cathode (AREA)

Abstract

Tubo de descarga eléctrica que comprende un cátodo provisto de una cavidad cerrada que contiene un suministro de compuestos de metales alcalino-térreos y en que por lo menos una parte de la pared está hecha de un cuerpo poroso de uno de los metales de alto punto de fusión por ejemplo tungento molibdeno o niobio fusionado a una temperatura elevada o moldeado bajo una presión elevada caracterizado por el hecho de que el suministro de compuestos de metales alcalino-térreos consiste de uno o más óxidos de metales alcalino térreoa cuya cantidad máxima está determinada por la cantidad requerida para formar compuestos determinados con óxidos formadores de ácidos que se proveen adicionalmente por ejemplo óxido de berilo óxido de zirconio óxido de titanio silice alumina y óxido de zinc conteniendo ademas una pequeña cantidad de boro carburo de boro carbono carburo de silicio un carburo metálico o un boruro metálico.
ES0208641A 1952-04-09 1953-04-06 Un tubo de descarga eléctrica Expired ES208641A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL168731 1952-04-09

Publications (1)

Publication Number Publication Date
ES208641A1 true ES208641A1 (es) 1953-07-01

Family

ID=19750556

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0208641A Expired ES208641A1 (es) 1952-04-09 1953-04-06 Un tubo de descarga eléctrica

Country Status (7)

Country Link
US (1) US2925514A (es)
BE (1) BE519027A (es)
CH (1) CH318310A (es)
ES (1) ES208641A1 (es)
FR (1) FR1074360A (es)
GB (1) GB725851A (es)
NL (1) NL95281C (es)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3076915A (en) * 1954-12-24 1963-02-05 Egyesuelt Izzolampa Cathode assembly and method of making same
GB1137124A (en) * 1964-12-23 1968-12-18 Nat Res Dev Thermionic electron emitter
DE1234861B (de) * 1965-07-05 1967-02-23 Siemens Ag Vorratskathode fuer elektrische Entladungsgefaesse
DE1283403B (de) * 1966-08-05 1968-11-21 Siemens Ag Mittelbar geheizte Vorratskathode fuer elektrische Entladungsgefaesse
DE2914836C2 (de) * 1979-04-11 1983-11-17 Siemens AG, 1000 Berlin und 8000 München Herstellungsverfahren für die Elektrodenaktivierungsmasse in einer Gasentladungsröhre
US6603250B2 (en) * 2001-08-27 2003-08-05 Osram Sylvania Inc. Cathode coating for thermionic arc discharge lamp cathodes

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1922244A (en) * 1930-09-13 1933-08-15 Fansteel Prod Co Inc Electrode and method of making the same
US2085605A (en) * 1934-05-11 1937-06-29 Gen Electric Thermionic cathode for electric discharge devices
US2107945A (en) * 1934-11-20 1938-02-08 Gen Electric Cathode structure
GB624009A (en) * 1942-11-14 1949-05-26 Philips Nv Improvements in or relating to electric discharge tubes
BE477491A (es) * 1943-05-28
BE486002A (es) * 1947-11-26
BE486753A (es) * 1948-01-15
BE515833A (es) * 1951-11-29
NL91132C (es) * 1951-11-29
GB731454A (en) * 1952-10-28 1955-06-08 Vickers Electrical Co Ltd Improvements relating to electron emissive devices

Also Published As

Publication number Publication date
CH318310A (de) 1956-12-31
US2925514A (en) 1960-02-16
FR1074360A (fr) 1954-10-05
BE519027A (es)
GB725851A (en) 1955-03-09
NL95281C (es)

Similar Documents

Publication Publication Date Title
ES206485A1 (es) MEJORAS INTRODUCIDAS EN LOS CUERPOS CAToDICOS PARA TUBOS DE DESCARGA ELÉCTRICA
GB641581A (en) Improvements in or relating to electric discharge tubes
ES225387A1 (es) MEJORAS INTRODUCIDAS EN LA FABRICACIoN DE CáTODOS
ES207960A1 (es) MEJORAS INTRODUCIDAS EN LOS CáTODOS PARA TUBOS DE DESCARGA ELÉCTRICA
GB568962A (en) Improvements in or relating to cathodes for electron discharge devices
ES206486A1 (es) MEJORAS INTRODUCIDAS EN LOS CáTODOS CILiNDRICOS
ES206484A1 (es) MEJORAS INTRODUCIDAS EN LOS CUERPOS CáTODICOS PARA TUBOSDE DESCARGA ELÉCTRICA
GB1003959A (en) Crossed-field electron discharge tube apparatus
ES208641A1 (es) Un tubo de descarga eléctrica
GB713140A (en) Improvements in or relating to the manufacture of dispenser cathodes
ES204273A1 (es) UN MÉTODO DE HACER ARTiCULOS DE METALES REFRACTARIOS MEDIANTE OPERACIoN DE CORTE.
GB757272A (en) Improvements relating to dispenser cathodes
GB924595A (en) Method of manufacturing cathodes
GB613946A (en) Improvements in or relating to thermionic tubes having a secondary-emission electrode
GB707512A (en) Improvements in or relating to methods of making articles from refractory metals by cutting operations and to articles made by means of these methods
ES213853A1 (es) UN MÉTODO DE FABRICAR CáTODOS DE SUMINISTRO
GB658747A (en) Improvements in and relating to electric discharge devices
GB701871A (en) Improvements in or relating to cathodes for electric discharge tubes and methods of producing such cathodes
GB1079904A (en) Improvements in and relating to metallurgical devices, in operation coming into contact with metal melts such as iron and steel melts
GB777142A (en) Improvements in or relating to cathode bodies for use in electric discharge tubes
ES200489A1 (es) UN PROCEDIMIENTO DE FABRICACIoN DE UN CáTODO
GB704737A (en) Improvements in or relating to x-ray tubes
GB790899A (en) Improvements in or relating to supply cathodes
ES201758A1 (es) UN PROCEDIMIENTO PERFECCIONADO DE FABRICACIoN DE BOMBAS CENTiFUGAS PARA ELEVACIoN DE FLuIDOS.
ES273303A1 (es) Perfeccionamientos en los electrodos sinterizados para lamparas de descarga de gas y o vapor y procedimiento para su fabricacion