GB589773A - Fluorescent electric discharge tube - Google Patents

Fluorescent electric discharge tube

Info

Publication number
GB589773A
GB589773A GB8279/45A GB827945A GB589773A GB 589773 A GB589773 A GB 589773A GB 8279/45 A GB8279/45 A GB 8279/45A GB 827945 A GB827945 A GB 827945A GB 589773 A GB589773 A GB 589773A
Authority
GB
United Kingdom
Prior art keywords
electrodes
electric discharge
discharge tube
condenser
shield
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
GB8279/45A
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.)
Auralight AB
Original Assignee
Lumalampan AB
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 Lumalampan AB filed Critical Lumalampan AB
Publication of GB589773A publication Critical patent/GB589773A/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
    • H05B41/22—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 having an auxiliary starting electrode
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/54—Igniting arrangements, e.g. promoting ionisation for starting
    • H01J61/545—Igniting arrangements, e.g. promoting ionisation for starting using an auxiliary electrode inside the vessel

Landscapes

  • Discharge Lamp (AREA)

Abstract

589,773. Discharge lamps. LUMALAM. PAN AKTIEBOLAG. April 4, 1945, No. 8279. Convention date, May 2, 1944. [Class 39 (i)] A fluorescent lamp 1 with filling of rare gas or mercury vapour has incandescent coil electrodes 3 and 10 and auxiliary starting cupshaped electrodes 2 and 13 acting also as cathode shields, the shield 2 being connected to the opposite electrode 10 through a condenser 9 and shield 13 to electrode 3 through a condenser 16. The condensers may be located in the caps of the tube or may be replaced by any impedance. The starting electrodes 2 and 13 have. coatings of emissive material.
GB8279/45A 1944-05-02 1945-04-04 Fluorescent electric discharge tube Expired GB589773A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE589773X 1944-05-02

Publications (1)

Publication Number Publication Date
GB589773A true GB589773A (en) 1947-06-30

Family

ID=20312589

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8279/45A Expired GB589773A (en) 1944-05-02 1945-04-04 Fluorescent electric discharge tube

Country Status (1)

Country Link
GB (1) GB589773A (en)

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