GB443535A - Improvements in or relating to indirectly heated cathodes for electric discharge tubes - Google Patents

Improvements in or relating to indirectly heated cathodes for electric discharge tubes

Info

Publication number
GB443535A
GB443535A GB18443/35A GB1844335A GB443535A GB 443535 A GB443535 A GB 443535A GB 18443/35 A GB18443/35 A GB 18443/35A GB 1844335 A GB1844335 A GB 1844335A GB 443535 A GB443535 A GB 443535A
Authority
GB
United Kingdom
Prior art keywords
indirectly heated
relating
electric discharge
discharge tubes
heated cathodes
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
GB18443/35A
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 GB443535A publication Critical patent/GB443535A/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

Landscapes

  • Electron Sources, Ion Sources (AREA)
  • Discharge Lamp (AREA)

Abstract

443,535. Thermionic cathodes. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, Emmasingel, Eindhoven, Holland. June 27, 1935, No. 18443. Convention date, Aug. 13, 1934. [Class 39 (i)] In an indirectly heated cathode, the body 1 is reduced at its ends to form co-axial supports 4. The heater wires pass out through holes 5 in the form shown.
GB18443/35A 1934-08-13 1935-06-27 Improvements in or relating to indirectly heated cathodes for electric discharge tubes Expired GB443535A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE443535X 1934-08-13

Publications (1)

Publication Number Publication Date
GB443535A true GB443535A (en) 1936-03-02

Family

ID=6529865

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18443/35A Expired GB443535A (en) 1934-08-13 1935-06-27 Improvements in or relating to indirectly heated cathodes for electric discharge tubes

Country Status (4)

Country Link
BE (1) BE410758A (en)
FR (1) FR793558A (en)
GB (1) GB443535A (en)
NL (1) NL44129C (en)

Also Published As

Publication number Publication date
NL44129C (en)
BE410758A (en)
FR793558A (en) 1936-01-27

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