FR827585A - Cathode improvements for discharge tubes - Google Patents

Cathode improvements for discharge tubes

Info

Publication number
FR827585A
FR827585A FR827585DA FR827585A FR 827585 A FR827585 A FR 827585A FR 827585D A FR827585D A FR 827585DA FR 827585 A FR827585 A FR 827585A
Authority
FR
France
Prior art keywords
cathode
discharge tubes
tubes
discharge
cathode improvements
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
Other languages
French (fr)
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
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 Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR827585A publication Critical patent/FR827585A/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
    • H01J1/26—Supports for the emissive material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/02—Details
    • H01J17/04—Electrodes; Screens
    • H01J17/06—Cathodes
    • H01J17/063—Indirectly heated cathodes, e.g. by the discharge itself
FR827585D 1936-10-16 1937-10-07 Cathode improvements for discharge tubes Expired FR827585A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US105844A US2154298A (en) 1936-10-16 1936-10-16 Cathode for electron discharge devices

Publications (1)

Publication Number Publication Date
FR827585A true FR827585A (en) 1938-04-28

Family

ID=21968185

Family Applications (1)

Application Number Title Priority Date Filing Date
FR827585D Expired FR827585A (en) 1936-10-16 1937-10-07 Cathode improvements for discharge tubes

Country Status (4)

Country Link
US (1) US2154298A (en)
DE (1) DE905872C (en)
FR (1) FR827585A (en)
GB (1) GB509030A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2447038A (en) * 1945-10-31 1948-08-17 Raytheon Mfg Co Cathode structure
US3439210A (en) * 1966-01-03 1969-04-15 Hughes Aircraft Co Thermionic emission cathode having reduced frontal area and enlarged emission area for ion bombardment environment

Also Published As

Publication number Publication date
GB509030A (en) 1939-07-06
US2154298A (en) 1939-04-11
DE905872C (en) 1954-03-08

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