GB597096A - Improvements in electric discharge tubes - Google Patents

Improvements in electric discharge tubes

Info

Publication number
GB597096A
GB597096A GB6376/45A GB637645A GB597096A GB 597096 A GB597096 A GB 597096A GB 6376/45 A GB6376/45 A GB 6376/45A GB 637645 A GB637645 A GB 637645A GB 597096 A GB597096 A GB 597096A
Authority
GB
United Kingdom
Prior art keywords
starting
electrode
tube
main
electrodes
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
GB6376/45A
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 GB597096A publication Critical patent/GB597096A/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

Landscapes

  • Discharge Lamp (AREA)

Abstract

597,096. Discharge lamps. LUMALAMPAN AKTIEBOLAG. March 14, 1946, No. 6376. Convention date, May 2, 1944. [Class 39 (i)] [Also in Group XXXV] A fluorescent electric discharge tube has at each end a coiled filament body divided into two halves, one functioning as a main electrode and the other as a starting electrode, and each starting electrode 2, 4 is connected to the opposite main electrode 1, 3, directly or indirectly as shown through a condenser, and the main electrodes connected to the current source through either a common choke or separate choke as shown. The main and adjacent starting electrode at each end of the tube are exactly alike as regards design and activation, and their functions may be interchanged to increase the life of the tube. The condensers included in the starting current circuits may be placed in the holders of the tube. The Specification as open to inspection under Sect. 91 comprises also the application of the circuit arrangements to embodiments having two auxiliary electrodes with a starting discharge between them adjacent each main electrode and the electrodes may be of the solid body type. This subject-matter does not appear in the Specification as accepted.
GB6376/45A 1944-05-02 1945-03-14 Improvements in electric discharge tubes Expired GB597096A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE597096X 1944-05-02

Publications (1)

Publication Number Publication Date
GB597096A true GB597096A (en) 1948-01-19

Family

ID=20312748

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6376/45A Expired GB597096A (en) 1944-05-02 1945-03-14 Improvements in electric discharge tubes

Country Status (1)

Country Link
GB (1) GB597096A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2241604A (en) * 1989-10-16 1991-09-04 Minipilo Electric Co Ltd Fluorescent lamp

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2241604A (en) * 1989-10-16 1991-09-04 Minipilo Electric Co Ltd Fluorescent lamp

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