GB867324A - Improvements in operating circuits for low-pressure electric discharge lamps - Google Patents

Improvements in operating circuits for low-pressure electric discharge lamps

Info

Publication number
GB867324A
GB867324A GB3578756A GB3578756A GB867324A GB 867324 A GB867324 A GB 867324A GB 3578756 A GB3578756 A GB 3578756A GB 3578756 A GB3578756 A GB 3578756A GB 867324 A GB867324 A GB 867324A
Authority
GB
United Kingdom
Prior art keywords
low
electric discharge
discharge lamps
pressure electric
operating circuits
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
GB3578756A
Inventor
Maurice George Clarke
Herbert Lawrence Privett
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical Industries 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 Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to GB3578756A priority Critical patent/GB867324A/en
Publication of GB867324A publication Critical patent/GB867324A/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

867,324. Discharge lamp circuits. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Nov. 22, 1957 [Nov. 22, 1956], No. 35787/56. Class 38 (4). A circuit for operating one or a series chain of low-pressure lamps 1 having indirectly heated electrodes 3 has the heaters 4 connected in series or parallel and fed from the output winding of a transformer 8, 9, the input winding being connected to an A.C. supply either directly or through part or all of a choke 5. The transformer may be of the single or double wound type.
GB3578756A 1956-11-22 1956-11-22 Improvements in operating circuits for low-pressure electric discharge lamps Expired GB867324A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3578756A GB867324A (en) 1956-11-22 1956-11-22 Improvements in operating circuits for low-pressure electric discharge lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3578756A GB867324A (en) 1956-11-22 1956-11-22 Improvements in operating circuits for low-pressure electric discharge lamps

Publications (1)

Publication Number Publication Date
GB867324A true GB867324A (en) 1961-05-03

Family

ID=10381549

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3578756A Expired GB867324A (en) 1956-11-22 1956-11-22 Improvements in operating circuits for low-pressure electric discharge lamps

Country Status (1)

Country Link
GB (1) GB867324A (en)

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