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GB723932A - Improvements relating to circuit arrangements for starting and operating hot-cathodeelectric discharge lamps - Google Patents

Improvements relating to circuit arrangements for starting and operating hot-cathodeelectric discharge lamps

Info

Publication number
GB723932A
GB723932A GB1482952A GB1482952A GB723932A GB 723932 A GB723932 A GB 723932A GB 1482952 A GB1482952 A GB 1482952A GB 1482952 A GB1482952 A GB 1482952A GB 723932 A GB723932 A GB 723932A
Authority
GB
United Kingdom
Prior art keywords
auto
transformer
lamp
starting
winding
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
GB1482952A
Inventor
William Harrison
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.)
Siemens Electric Lamps and Supplies Ltd
Original Assignee
Siemens Electric Lamps and Supplies Ltd
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 Siemens Electric Lamps and Supplies Ltd filed Critical Siemens Electric Lamps and Supplies Ltd
Priority to GB1482952A priority Critical patent/GB723932A/en
Publication of GB723932A publication Critical patent/GB723932A/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

  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

723,932. Supply systems for space-discharge apparatus. SIEMENS ELECTRIC LAMPS & SUPPLIES, Ltd. June 5, 1953 [June 12, 1952], No. 14829/52. Class 38 (4). When a discharge lamp circuit is connected to an alternating-current source at circuit input terminals 5 a current surge through a power-factor correction capacitor 3 and the primary portion 10 of an auto-transformer 1 which are serially connected across terminals 5 produces a voltage surge which is stepped up by the auto-transformer 1 and is applied as a starting voltage to a discharge lamp 6, the lamp being serially connected with the whole winding of the auto-transformer 1 across the terminals 5 and being connected directly in parallel with the primary winding 7-of a second auto-transformer 2 which has at each end of its winding 7 a secondary portion 8 connected to supply heating current to a corresponding filament 9 of the lamp. During running the first auto-transformer 1 serves as a ballast. The secondary portions 8 of the second autotransformer may, as shown, comprise extensions of the primary winding, or may, as disclosed in Fig. 2 (not shown) be included in the primary winding turns.
GB1482952A 1952-06-12 1952-06-12 Improvements relating to circuit arrangements for starting and operating hot-cathodeelectric discharge lamps Expired GB723932A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1482952A GB723932A (en) 1952-06-12 1952-06-12 Improvements relating to circuit arrangements for starting and operating hot-cathodeelectric discharge lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1482952A GB723932A (en) 1952-06-12 1952-06-12 Improvements relating to circuit arrangements for starting and operating hot-cathodeelectric discharge lamps

Publications (1)

Publication Number Publication Date
GB723932A true GB723932A (en) 1955-02-16

Family

ID=10048208

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1482952A Expired GB723932A (en) 1952-06-12 1952-06-12 Improvements relating to circuit arrangements for starting and operating hot-cathodeelectric discharge lamps

Country Status (1)

Country Link
GB (1) GB723932A (en)

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