GB705126A - Improvements in or relating to cathodes for electric discharge tubes - Google Patents

Improvements in or relating to cathodes for electric discharge tubes

Info

Publication number
GB705126A
GB705126A GB4002/52A GB400252A GB705126A GB 705126 A GB705126 A GB 705126A GB 4002/52 A GB4002/52 A GB 4002/52A GB 400252 A GB400252 A GB 400252A GB 705126 A GB705126 A GB 705126A
Authority
GB
United Kingdom
Prior art keywords
cathodes
relating
electric discharge
discharge tubes
feb
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
GB4002/52A
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 and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
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
Application filed by Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Publication of GB705126A publication Critical patent/GB705126A/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
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H01J1/28—Dispenser-type cathodes, e.g. L-cathode

Landscapes

  • Discharge Lamp (AREA)

Abstract

705,126. Cathode materials. SIEMENS & HALSKE AKT.-GES. Feb. 14. 1952 [Feb. 16, 1951], No. 4002/52. Class 39(1) In a dispenser-type cathode, in which an internal store of emissive material permeates through the pores of a containing member, the container may be of porous carbon, or have a carbon coating. A container of sintered porous tungsten or molybdenum may be coated with graphite, as by rubbing or painting, or may be coated by carburization.
GB4002/52A 1951-02-16 1952-02-14 Improvements in or relating to cathodes for electric discharge tubes Expired GB705126A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE305546X 1951-02-16

Publications (1)

Publication Number Publication Date
GB705126A true GB705126A (en) 1954-03-10

Family

ID=6120841

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4002/52A Expired GB705126A (en) 1951-02-16 1952-02-14 Improvements in or relating to cathodes for electric discharge tubes

Country Status (2)

Country Link
CH (1) CH305546A (en)
GB (1) GB705126A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2878409A (en) * 1957-04-29 1959-03-17 Philips Corp Dispenser-type cathode and method of making
US2972078A (en) * 1959-01-23 1961-02-14 Philips Corp Carburization of dispenser cathodes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2878409A (en) * 1957-04-29 1959-03-17 Philips Corp Dispenser-type cathode and method of making
US2972078A (en) * 1959-01-23 1961-02-14 Philips Corp Carburization of dispenser cathodes

Also Published As

Publication number Publication date
CH305546A (en) 1955-02-28

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