GB523924A - Improvements in gas-filled electric discharge devices and in means for operating them - Google Patents

Improvements in gas-filled electric discharge devices and in means for operating them

Info

Publication number
GB523924A
GB523924A GB1639/39A GB163939A GB523924A GB 523924 A GB523924 A GB 523924A GB 1639/39 A GB1639/39 A GB 1639/39A GB 163939 A GB163939 A GB 163939A GB 523924 A GB523924 A GB 523924A
Authority
GB
United Kingdom
Prior art keywords
electrode
parts
discharge
coated
carbonate
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
GB1639/39A
Other languages
English (en)
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.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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 Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Publication of GB523924A publication Critical patent/GB523924A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/06—Main electrodes
    • H01J61/067—Main electrodes for low-pressure discharge lamps
    • H01J61/0672—Main electrodes for low-pressure discharge lamps characterised by the construction of the electrode
    • 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)
GB1639/39A 1940-05-04 1939-01-17 Improvements in gas-filled electric discharge devices and in means for operating them Expired GB523924A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE218223X 1940-05-04

Publications (1)

Publication Number Publication Date
GB523924A true GB523924A (en) 1940-07-25

Family

ID=5831184

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1639/39A Expired GB523924A (en) 1940-05-04 1939-01-17 Improvements in gas-filled electric discharge devices and in means for operating them

Country Status (4)

Country Link
BE (1) BE437143A (US07122603-20061017-C00045.png)
CH (1) CH218223A (US07122603-20061017-C00045.png)
FR (1) FR869463A (US07122603-20061017-C00045.png)
GB (1) GB523924A (US07122603-20061017-C00045.png)

Also Published As

Publication number Publication date
BE437143A (US07122603-20061017-C00045.png)
CH218223A (de) 1941-11-30
FR869463A (fr) 1942-02-03

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