GB562292A - Improvements in transformer systems for supplying electric discharge devices - Google Patents

Improvements in transformer systems for supplying electric discharge devices

Info

Publication number
GB562292A
GB562292A GB1365/43A GB136543A GB562292A GB 562292 A GB562292 A GB 562292A GB 1365/43 A GB1365/43 A GB 1365/43A GB 136543 A GB136543 A GB 136543A GB 562292 A GB562292 A GB 562292A
Authority
GB
United Kingdom
Prior art keywords
limb
lamp
jan
series
electric discharge
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
GB1365/43A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB562292A publication Critical patent/GB562292A/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

562,292. Transformers; supply systems for discharge lamps. BRITISH, THOMSON-HOUSTON CO., Ltd. Jan. 27, 1943, No. 1365. Convention date, Jan. 28, 1942. [Classes 38 (ii) and 38 (iv)] A discharge lamp 1 of the type having a fluorescent coating and electrodes which are not preheated at starting is supplied through a transformer adapted to superpose a peak on the voltage wave of the A.C. source 4 for starting whilst maintaining a relatively good power factor during running. The transformer comprises a three-limbed core, one limb of which carries the primary 13 and, if desired, a part of the secondary, the main part of the secondary 15 which is in series with the lamp being carried by another limb which includes a part 18 of reduced cross-section operating at saturation, while the third limb 10 forms a magnetic shunt. A condenser may be connected in series with the lamp to cause it to operate with a leading current.
GB1365/43A 1942-01-28 1943-01-27 Improvements in transformer systems for supplying electric discharge devices Expired GB562292A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US562292XA 1942-01-28 1942-01-28

Publications (1)

Publication Number Publication Date
GB562292A true GB562292A (en) 1944-06-26

Family

ID=22003046

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1365/43A Expired GB562292A (en) 1942-01-28 1943-01-27 Improvements in transformer systems for supplying electric discharge devices

Country Status (1)

Country Link
GB (1) GB562292A (en)

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