GB334998A - Improvements in or relating to electric discharge tubes - Google Patents

Improvements in or relating to electric discharge tubes

Info

Publication number
GB334998A
GB334998A GB2177429A GB2177429A GB334998A GB 334998 A GB334998 A GB 334998A GB 2177429 A GB2177429 A GB 2177429A GB 2177429 A GB2177429 A GB 2177429A GB 334998 A GB334998 A GB 334998A
Authority
GB
United Kingdom
Prior art keywords
anodes
molybdenum
tungsten
cathode
resistances
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
GB2177429A
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
Priority to GB2177429A priority Critical patent/GB334998A/en
Publication of GB334998A publication Critical patent/GB334998A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/16—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies
    • H05B41/20—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having no starting switch
    • H05B41/23—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having no starting switch for lamps not having an auxiliary starting electrode
    • H05B41/232—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having no starting switch for lamps not having an auxiliary starting electrode for low-pressure lamps
    • H05B41/2325—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having no starting switch for lamps not having an auxiliary starting electrode for low-pressure lamps provided with pre-heating electrodes

Landscapes

  • Discharge Lamp (AREA)

Abstract

334,998. Dicker, S. G. S., (Naamlooze Vennootschap Philips' Gloeilampenfabricken). July 15, 1929. Vacuum tubes.- A gas - filled lamp giving positive column radiation, for use with alternating current of three or more phases, has a solid electron-emitting electrode and three or more anodes, the paths of the discharges coinciding. As shown, three anodes 10 of molybdenum or graphite are mounted in separate chambers leading to a common channel 1 in which the electron-emitting electrode 3 is mounted; or the anodes may be separated by screens. The electrode 3 consists of tungsten. or an alloy of thorium with tungsten or molybdenum, or a wehnelt. cathode ; it may be heated directly or indirectly, or by the discharge. The gas filling may be neon at a pressure of 0.5-5 mms. The anodes are connected the network through impedances such as inductive resistances 13, and the usual transformer may he omitted: or instead of using resistances in the anode circuit, a resistance may be connected in the cathode circuit.
GB2177429A 1929-07-15 1929-07-15 Improvements in or relating to electric discharge tubes Expired GB334998A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2177429A GB334998A (en) 1929-07-15 1929-07-15 Improvements in or relating to electric discharge tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2177429A GB334998A (en) 1929-07-15 1929-07-15 Improvements in or relating to electric discharge tubes

Publications (1)

Publication Number Publication Date
GB334998A true GB334998A (en) 1930-09-18

Family

ID=10168558

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2177429A Expired GB334998A (en) 1929-07-15 1929-07-15 Improvements in or relating to electric discharge tubes

Country Status (1)

Country Link
GB (1) GB334998A (en)

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