GB470234A - Improvements in carbon-coated electrodes or the like in electric discharge tubes - Google Patents

Improvements in carbon-coated electrodes or the like in electric discharge tubes

Info

Publication number
GB470234A
GB470234A GB3724/37A GB372437A GB470234A GB 470234 A GB470234 A GB 470234A GB 3724/37 A GB3724/37 A GB 3724/37A GB 372437 A GB372437 A GB 372437A GB 470234 A GB470234 A GB 470234A
Authority
GB
United Kingdom
Prior art keywords
carbon
electric discharge
discharge tubes
coated electrodes
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
GB3724/37A
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 GB470234A publication Critical patent/GB470234A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
    • H01J2893/0012—Constructional arrangements
    • H01J2893/0019—Chemical composition and manufacture
    • H01J2893/0022—Manufacture
    • H01J2893/0023—Manufacture carbonising and other surface treatments

Landscapes

  • Battery Electrode And Active Subsutance (AREA)

Abstract

470,234. Discharge tubes. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Feb. 8, 1937, No. 3724. Convention date, Feb. 10, 1936. [Class 39 (i)] To increase the thermal radiation of electrodes such as anodes or other parts within an electric discharge tube, the anode or other part is coated with carbon, an additional layer being interposed between the anode material and the carbon; this layer which may be a silicate or one or more oxides of magnesium, beryllium or aluminium, adheres to the underlying metal and the carbon coating does not dissolve into it.
GB3724/37A 1936-02-10 1937-02-08 Improvements in carbon-coated electrodes or the like in electric discharge tubes Expired GB470234A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE470234X 1936-02-10

Publications (1)

Publication Number Publication Date
GB470234A true GB470234A (en) 1937-08-11

Family

ID=6541103

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3724/37A Expired GB470234A (en) 1936-02-10 1937-02-08 Improvements in carbon-coated electrodes or the like in electric discharge tubes

Country Status (1)

Country Link
GB (1) GB470234A (en)

Similar Documents

Publication Publication Date Title
GB470234A (en) Improvements in carbon-coated electrodes or the like in electric discharge tubes
GB503211A (en) Improvements in or relating to secondary electron multipliers
GB430853A (en) Improvements in or relating to indirectly heated cathodes for electron discharge tubes
GB230183A (en) Improvements in or relating to x-ray tubes
GB251951A (en) Improvements in sealing metal in or to glass
GB613946A (en) Improvements in or relating to thermionic tubes having a secondary-emission electrode
GB492025A (en) Improved method of manufacturing secondary-emission electrodes
GB482813A (en) Improvements in or relating to gas-filled or vapour-filled electric discharge devices
GB203266A (en) Improvements in or relating to cooling electrodes of x-ray tubes
GB414608A (en) Improvements in or relating to electric discharge tubes
GB479733A (en) Improvements in or relating to the manufacture of activated electrodes for photo-electric cells or secondary electron multipliers
GB474834A (en) Improvements in or relating to electron discharge devices
GB477262A (en) Improvements in or relating to electric discharge tubes comprising secondary-emission electrodes
GB479920A (en) Improvements in and relating to electric discharge devices
GB493487A (en) Improvements relating to thermionic valves
GB401471A (en) Improvements in or relating to gasfilled discharge tubes, particularly incandescent cathode rectifier tubes
GB526731A (en) Improvements in secondary emissive electrodes
GB484748A (en) Improvements in electric discharge tubes
GB475183A (en) Improvements in or relating to electric discharge tubes
GB271466A (en) Improvements in or relating to rectifying discharge tubes
GB416616A (en) Improvements in electric discharge tubes
GB499171A (en) Improvements in electric discharge tubes
GB637385A (en) Improved process of manufacturing cathodes for electric discharge tubes
GB482022A (en) Improved method of introducing an alkali or alkaline earth metal into an exhausted receptacle
GB545926A (en) Improvements in or relating to electric discharge tubes