CH298304A - Cathode for an electrical discharge tube, the wall of which consists at least partially of a porous body made of refractory metal, and a method for producing this cathode. - Google Patents

Cathode for an electrical discharge tube, the wall of which consists at least partially of a porous body made of refractory metal, and a method for producing this cathode.

Info

Publication number
CH298304A
CH298304A CH298304DA CH298304A CH 298304 A CH298304 A CH 298304A CH 298304D A CH298304D A CH 298304DA CH 298304 A CH298304 A CH 298304A
Authority
CH
Switzerland
Prior art keywords
cathode
partially
producing
wall
discharge tube
Prior art date
Application number
Other languages
German (de)
Inventor
Gloeilampenfabrieken N Philips
Original Assignee
Philips 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 Nv filed Critical Philips Nv
Publication of CH298304A publication Critical patent/CH298304A/en

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
CH298304D 1951-02-08 1952-02-06 Cathode for an electrical discharge tube, the wall of which consists at least partially of a porous body made of refractory metal, and a method for producing this cathode. CH298304A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL298304X 1951-02-08

Publications (1)

Publication Number Publication Date
CH298304A true CH298304A (en) 1954-04-30

Family

ID=19783092

Family Applications (1)

Application Number Title Priority Date Filing Date
CH298304D CH298304A (en) 1951-02-08 1952-02-06 Cathode for an electrical discharge tube, the wall of which consists at least partially of a porous body made of refractory metal, and a method for producing this cathode.

Country Status (4)

Country Link
BE (1) BE509019A (en)
CH (1) CH298304A (en)
FR (1) FR1050568A (en)
GB (1) GB701871A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2880342A (en) * 1956-10-25 1959-03-31 Gen Dynamics Corp Electron beam for a cathode ray tube
US2975322A (en) * 1958-12-29 1961-03-14 Raytheon Co Indirectly heated cathodes
NL108689C (en) * 1959-01-23 1900-01-01
NL8105921A (en) * 1981-12-31 1983-07-18 Philips Nv TELEVISION ROOM TUBE.
JPH11339633A (en) * 1997-11-04 1999-12-10 Sony Corp Impregnated cathode and manufacture therefor and electron gun and electronic tube

Also Published As

Publication number Publication date
BE509019A (en)
FR1050568A (en) 1954-01-08
GB701871A (en) 1954-01-06

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