GB1235496A - Improvements in or relating to circuit arrangements for starting and operating electric discharge lamps from alternating current supplies - Google Patents

Improvements in or relating to circuit arrangements for starting and operating electric discharge lamps from alternating current supplies

Info

Publication number
GB1235496A
GB1235496A GB3156568A GB3156568A GB1235496A GB 1235496 A GB1235496 A GB 1235496A GB 3156568 A GB3156568 A GB 3156568A GB 3156568 A GB3156568 A GB 3156568A GB 1235496 A GB1235496 A GB 1235496A
Authority
GB
United Kingdom
Prior art keywords
windings
inductor
relating
starting
alternating current
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
GB3156568A
Inventor
Julius Cates
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB3156568A priority Critical patent/GB1235496A/en
Publication of GB1235496A publication Critical patent/GB1235496A/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 Lamps And Accessories Thereof (AREA)

Abstract

1,235,496. Inductors. GENERAL ELECTRIC CO. Ltd. 24 Sept., 1969 [2 July, 1968], No. 31565/68. Heading H1T. [Also in Division H2] An inductor for use as a ballast unit in an electric gas discharge lamp system comprises at least two windings which are serially connected in opposition, the inductor being arranged to have large magnetic leakage. In one embodiment an inductor 11 is provided with three windings W1, W2, S, the windings W1, W2 being wound on a single former. The magnetic core 14 comprises two sections 12, 13 arranged to have air gaps between the sections with the windings W, S associated with a leg of each section. In a second embodiment the core sections 12, 13 are placed between the end portions of a rectangular type core. In other embodiments two windings only are used, magnetic shunts being provided between the two windings. The inductor may be potted in a mixture of polyester and powdered silica and housed in a box-like container associated with the discharge lamp.
GB3156568A 1968-07-02 1968-07-02 Improvements in or relating to circuit arrangements for starting and operating electric discharge lamps from alternating current supplies Expired GB1235496A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3156568A GB1235496A (en) 1968-07-02 1968-07-02 Improvements in or relating to circuit arrangements for starting and operating electric discharge lamps from alternating current supplies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3156568A GB1235496A (en) 1968-07-02 1968-07-02 Improvements in or relating to circuit arrangements for starting and operating electric discharge lamps from alternating current supplies

Publications (1)

Publication Number Publication Date
GB1235496A true GB1235496A (en) 1971-06-16

Family

ID=10325022

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3156568A Expired GB1235496A (en) 1968-07-02 1968-07-02 Improvements in or relating to circuit arrangements for starting and operating electric discharge lamps from alternating current supplies

Country Status (1)

Country Link
GB (1) GB1235496A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2420177A1 (en) * 1974-04-26 1975-11-13 Bertos Ag Starter circuit elements for lamp ignition - include transformer connected choke coils and capacitor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2420177A1 (en) * 1974-04-26 1975-11-13 Bertos Ag Starter circuit elements for lamp ignition - include transformer connected choke coils and capacitor

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