GB601380A - Improvements in or relating to transformers particularly adapted for use with luminescent lamp loads, and to electric lighting systems - Google Patents

Improvements in or relating to transformers particularly adapted for use with luminescent lamp loads, and to electric lighting systems

Info

Publication number
GB601380A
GB601380A GB15046/44A GB1504644A GB601380A GB 601380 A GB601380 A GB 601380A GB 15046/44 A GB15046/44 A GB 15046/44A GB 1504644 A GB1504644 A GB 1504644A GB 601380 A GB601380 A GB 601380A
Authority
GB
United Kingdom
Prior art keywords
primary
lamp
voltage
arc
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
GB15046/44A
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.)
BOUCHER INV S Ltd
Original Assignee
BOUCHER INV S 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 BOUCHER INV S Ltd filed Critical BOUCHER INV S Ltd
Publication of GB601380A publication Critical patent/GB601380A/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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/08—High-leakage transformers or inductances
    • H01F38/10—Ballasts, e.g. for discharge lamps

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

601,380. Transformers. BOUCHEH INVENTIONS, Ltd. Aug. 8, 1944, No. 15046. Convention date, June 25, 1942. [Classes 38 (ii) and 38 (iv)] A transformer for supplying luminescent lamps comprises a primary and two secondary windings on the same main magnetic core, there being a magnetic shunt between the primary and one of the secondary windings and a condenser in series with the other secondary winding which is adjacent the primary. Primary winding 16 energized from a source 19 is wound on a centre limb 11 of a core 10. A secondary winding 20 wound closely round the primary supplies a fluorescent gas discharge lamp T, which has a condenser C in series to improve the power factor and limit the value of the current. A second lamp T 2 is supplied from another secondary winding 21 connected in autotransformer relationship with the primary 16, so that it receives the sum of the voltages in primary 16 and secondary 21. When the arc in lamp T 2 is extinguished at the end of each ¢ cycle, the flux passes through centre limb l and yoke 15 to induce sufficient voltage in secondary 21 for the voltage as it rises across lamp T 2 to restrike the arc, whereupon the flux is immediately diverted through the shunts SH 1 , SH 2 and across airgaps G 1 , G 2 , little voltage then being induced in secondary 21 ; the voltage across lamp T 2 falls but remains just sufficient to keep the arc in being during the rest of the ¢ cycle.
GB15046/44A 1942-06-25 1944-08-08 Improvements in or relating to transformers particularly adapted for use with luminescent lamp loads, and to electric lighting systems Expired GB601380A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US601380XA 1942-06-25 1942-06-25

Publications (1)

Publication Number Publication Date
GB601380A true GB601380A (en) 1948-05-05

Family

ID=22027606

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15046/44A Expired GB601380A (en) 1942-06-25 1944-08-08 Improvements in or relating to transformers particularly adapted for use with luminescent lamp loads, and to electric lighting systems

Country Status (1)

Country Link
GB (1) GB601380A (en)

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