GB626985A - Improvements in or relating to the starting or striking of fluorescent tubes - Google Patents

Improvements in or relating to the starting or striking of fluorescent tubes

Info

Publication number
GB626985A
GB626985A GB3685046A GB3685046A GB626985A GB 626985 A GB626985 A GB 626985A GB 3685046 A GB3685046 A GB 3685046A GB 3685046 A GB3685046 A GB 3685046A GB 626985 A GB626985 A GB 626985A
Authority
GB
United Kingdom
Prior art keywords
choke
winding
transformer
starting
lamp
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
GB3685046A
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.)
CONCORDIA ELECTRIC SAFETY LAMP
Original Assignee
CONCORDIA ELECTRIC SAFETY LAMP
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 CONCORDIA ELECTRIC SAFETY LAMP filed Critical CONCORDIA ELECTRIC SAFETY LAMP
Priority to GB3685046A priority Critical patent/GB626985A/en
Publication of GB626985A publication Critical patent/GB626985A/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

626,985. Supply systems for space-discharge lamps. CONCORDIA ELECTRIC SAFETY LAMP CO., Ltd., and STEADMAN, C. H. Dec. 13, 1946, No. 36850. [Class 38 (iv)] A circuit arrangement which enables a fluorescent lamp to be rapidly started with partially heated electrodes and provides sufficient voltage to effect cold starting in the event of broken heater filaments comprises a non-leaky auto-transformer 8 having its primary winding 15-25 connected in series with a choke 9 across the supply mains 12, 13 and the fluorescent lamp 1 having a further choke 7 in series therewith connected across the primary and secondary windings of the transformer and its choke 9 whilst the electrode heaters 6, 5 are supplied respectively from an auxiliary winding 10 and a tapping 14 on the transformer secondary winding and a capacitor 11 is connected across the lamp and its choke 7 to provide partial resonance at starting. The two choke coils may be wound on a common core and comprise a tapped winding so wound that the respective fluxes act in the same direction.
GB3685046A 1946-12-13 1946-12-13 Improvements in or relating to the starting or striking of fluorescent tubes Expired GB626985A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3685046A GB626985A (en) 1946-12-13 1946-12-13 Improvements in or relating to the starting or striking of fluorescent tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3685046A GB626985A (en) 1946-12-13 1946-12-13 Improvements in or relating to the starting or striking of fluorescent tubes

Publications (1)

Publication Number Publication Date
GB626985A true GB626985A (en) 1949-07-25

Family

ID=10391684

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3685046A Expired GB626985A (en) 1946-12-13 1946-12-13 Improvements in or relating to the starting or striking of fluorescent tubes

Country Status (1)

Country Link
GB (1) GB626985A (en)

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