FR777482A - Oxide cathode more particularly intended for gas atmosphere discharge tubes - Google Patents

Oxide cathode more particularly intended for gas atmosphere discharge tubes

Info

Publication number
FR777482A
FR777482A FR777482DA FR777482A FR 777482 A FR777482 A FR 777482A FR 777482D A FR777482D A FR 777482DA FR 777482 A FR777482 A FR 777482A
Authority
FR
France
Prior art keywords
gas atmosphere
discharge tubes
particularly intended
oxide cathode
atmosphere discharge
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.)
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
Application granted granted Critical
Publication of FR777482A publication Critical patent/FR777482A/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
    • H01J1/15—Cathodes heated directly by an electric current
    • H01J1/16—Cathodes heated directly by an electric current characterised by the shape
FR777482D 1933-09-14 1934-08-18 Oxide cathode more particularly intended for gas atmosphere discharge tubes Expired FR777482A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE777482X 1933-09-14

Publications (1)

Publication Number Publication Date
FR777482A true FR777482A (en) 1935-02-21

Family

ID=6686761

Family Applications (1)

Application Number Title Priority Date Filing Date
FR777482D Expired FR777482A (en) 1933-09-14 1934-08-18 Oxide cathode more particularly intended for gas atmosphere discharge tubes

Country Status (1)

Country Link
FR (1) FR777482A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0980088A1 (en) * 1998-08-07 2000-02-16 Eaton Corporation Toroidal filament for plasma generation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0980088A1 (en) * 1998-08-07 2000-02-16 Eaton Corporation Toroidal filament for plasma generation

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