GB441534A - Improvements in lighting installations - Google Patents

Improvements in lighting installations

Info

Publication number
GB441534A
GB441534A GB19637/35A GB1963735A GB441534A GB 441534 A GB441534 A GB 441534A GB 19637/35 A GB19637/35 A GB 19637/35A GB 1963735 A GB1963735 A GB 1963735A GB 441534 A GB441534 A GB 441534A
Authority
GB
United Kingdom
Prior art keywords
july
discharge lamps
lamps
supply
lighting installations
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
GB19637/35A
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 GB441534A publication Critical patent/GB441534A/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

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

441,534. Supply systems for discharge lamps. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, Emmasingel, Eindhoven, Holland. July 9, 1935, No. 19637. Convention date, July 26, 1934. Addition to 389,025. [Class 38 (iv)] In a lighting system in which incandescent cathode discharge lamps 1 are supplied by transformers 3 the primaries of which are connected in series to a constant current source 6 as described in the parent Specification, a saturated choke 7 is included in the primary circuit at a point remote from the supply to prevent the occurrence of high voltage peaks between the conductors extending to the lamps.
GB19637/35A 1934-07-26 1935-07-09 Improvements in lighting installations Expired GB441534A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE441534X 1934-07-26

Publications (1)

Publication Number Publication Date
GB441534A true GB441534A (en) 1936-01-21

Family

ID=6517015

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19637/35A Expired GB441534A (en) 1934-07-26 1935-07-09 Improvements in lighting installations

Country Status (1)

Country Link
GB (1) GB441534A (en)

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