GB696082A - Improvements in or relating to electric discharge apparatus - Google Patents

Improvements in or relating to electric discharge apparatus

Info

Publication number
GB696082A
GB696082A GB29744/50A GB2974450A GB696082A GB 696082 A GB696082 A GB 696082A GB 29744/50 A GB29744/50 A GB 29744/50A GB 2974450 A GB2974450 A GB 2974450A GB 696082 A GB696082 A GB 696082A
Authority
GB
United Kingdom
Prior art keywords
discharge apparatus
lamps
dec
transformer
inductor
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
GB29744/50A
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.)
Claude Paz et Visseaux SA
Original Assignee
Societe Anonyme pour les Applications de lElectricite et des Gaz Rares Etablissement Claude Paz et Silva
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 Societe Anonyme pour les Applications de lElectricite et des Gaz Rares Etablissement Claude Paz et Silva filed Critical Societe Anonyme pour les Applications de lElectricite et des Gaz Rares Etablissement Claude Paz et Silva
Publication of GB696082A publication Critical patent/GB696082A/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

Abstract

696,082. Supply systems for space discharge apparatus. SOC. ANON. POUR LES APPLICATIONS DE L'ELECTRICITE ET DES GAZ RARES - ETABLISSEMENTS C.PAZ & SILVA. Dec. 5, 1950 [Dec. 20, 1949], No. 29744/50. Class 38 (iv). At least one group of at least two parallel connected metal filament incandescent lamps 17, 18, operating at their rated load, stabilize an electric discharge apparatus 1 serially connected therewith across a supply and having filamentary electrodes heated by the secondary windings of a transformer 9. The lamps 17, 18 are preferably krypton and/or xenon filled, and the discharge lamp 1 may have a starting facilitating auxiliary electrode comprising, e.g., a mainly graphite conducting strip connected through a resistor to one main electrode. Stroboscopic effect may be reduced by providing two further lamps 19, 22, respectively stabilized by a serially connected inductor 20 and condenser 21, and an inductor 23. In modifications the circuit may be supplied from a network through a transformer, or from primary or secondary cells through a vibrating interrupter; and each filament heating secondary winding may have its own magnetic circuit and primary winding. Suitable component values are given in the Specification. Reference has been directed by the Comptroller to Specification 647,033.
GB29744/50A 1949-12-20 1950-12-05 Improvements in or relating to electric discharge apparatus Expired GB696082A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR696082X 1949-12-20

Publications (1)

Publication Number Publication Date
GB696082A true GB696082A (en) 1953-08-26

Family

ID=9046477

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29744/50A Expired GB696082A (en) 1949-12-20 1950-12-05 Improvements in or relating to electric discharge apparatus

Country Status (1)

Country Link
GB (1) GB696082A (en)

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