GB658113A - Improvements in or relating to circuit arrangements for operating electric discharge lamps - Google Patents

Improvements in or relating to circuit arrangements for operating electric discharge lamps

Info

Publication number
GB658113A
GB658113A GB2992348A GB2992348A GB658113A GB 658113 A GB658113 A GB 658113A GB 2992348 A GB2992348 A GB 2992348A GB 2992348 A GB2992348 A GB 2992348A GB 658113 A GB658113 A GB 658113A
Authority
GB
United Kingdom
Prior art keywords
secondary windings
core
primary winding
discharge lamps
relating
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
GB2992348A
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 GB2992348A priority Critical patent/GB658113A/en
Publication of GB658113A publication Critical patent/GB658113A/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

658,113. Supply systems for discharge lamps. GENERAL ELECTRIC CO., Ltd., and WILLIAMS, C. E. Nov. 17, 1948, No. 29923. [Class 38 (iv)] To equalize the wattage consumption of the heaters 6, 7 of a hot-electrode A.C. discharge lamp 5, the heating current is provided by a transformer 16 having secondary windings 18, 19 separately connected to the heaters and arranged on different parts of the core of the transformer, each part being magnetically shunted by another portion of the core different from that on which the primary winding 17 is disposed. As shown, the core parts 21, 22, carrying respectively the two secondary windings, form magnetic shunts for each other. Additional shunts 23, 24 may be arranged between the primary and secondary windings. In another arrangement the primary winding occupies the centre portion of the middle limb of a three-limbed core and the secondary windings are disposed one at each end of the same limb, being separated from the primary winding by magnetic shunts which extend between the middle and outer limbs. The lamp may be supplied at a voltage higher than that of the mains by a winding closely coupled to the primary winding.
GB2992348A 1948-11-17 1948-11-17 Improvements in or relating to circuit arrangements for operating electric discharge lamps Expired GB658113A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2992348A GB658113A (en) 1948-11-17 1948-11-17 Improvements in or relating to circuit arrangements for operating electric discharge lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2992348A GB658113A (en) 1948-11-17 1948-11-17 Improvements in or relating to circuit arrangements for operating electric discharge lamps

Publications (1)

Publication Number Publication Date
GB658113A true GB658113A (en) 1951-10-03

Family

ID=10299393

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2992348A Expired GB658113A (en) 1948-11-17 1948-11-17 Improvements in or relating to circuit arrangements for operating electric discharge lamps

Country Status (1)

Country Link
GB (1) GB658113A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1023527B (en) * 1954-04-01 1958-01-30 Philips Nv Device with a gas and / or vapor discharge tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1023527B (en) * 1954-04-01 1958-01-30 Philips Nv Device with a gas and / or vapor discharge tube

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