GB685273A - Improvements in and relating to starting circuits for fluorescent lamps - Google Patents

Improvements in and relating to starting circuits for fluorescent lamps

Info

Publication number
GB685273A
GB685273A GB4331/51A GB433151A GB685273A GB 685273 A GB685273 A GB 685273A GB 4331/51 A GB4331/51 A GB 4331/51A GB 433151 A GB433151 A GB 433151A GB 685273 A GB685273 A GB 685273A
Authority
GB
United Kingdom
Prior art keywords
transformer
relating
fluorescent lamps
switches
ballast impedance
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
GB4331/51A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB685273A publication Critical patent/GB685273A/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
    • H05B41/18—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 a starting switch
    • H05B41/19—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 a starting switch for lamps having an auxiliary starting electrode

Abstract

685,273. Supply systems for space discharge apparatus. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 22, 1951 [March 14, 1950], No. 4331/51. Class 38 (iv). Voltage pulses induced in the secondary winding 11 of a transformer 9 by the opening of automatic or manually-operated switches 7, 7<SP>1</SP> cause capactative electrodes 12, 12<SP>1</SP> to ionize the gas and thereby ignite a plurality of seriesconnected discharge lamps 1, 1<SP>1</SP> supplied with A.C. or D.C. through a ballast impedance 2 and the primary winding 10 of the transformer. The switches are of the glow type, as shown, or of a thermal type. The transformer may alternatively be double-wound, and the ballast impedance may comprise an incandescent lamp. If the supply voltage is very low one switch 7<SP>1</SP> may be shunted by a resistor 19 to enable starting.
GB4331/51A 1950-03-14 1951-02-22 Improvements in and relating to starting circuits for fluorescent lamps Expired GB685273A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US685273XA 1950-03-14 1950-03-14

Publications (1)

Publication Number Publication Date
GB685273A true GB685273A (en) 1952-12-31

Family

ID=22083139

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4331/51A Expired GB685273A (en) 1950-03-14 1951-02-22 Improvements in and relating to starting circuits for fluorescent lamps

Country Status (1)

Country Link
GB (1) GB685273A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1142417B (en) * 1957-06-08 1963-01-17 Bbc Brown Boveri & Cie Circuit arrangement for starterless ignition of low-voltage fluorescent lamps
DE3127876A1 (en) * 1981-07-15 1983-02-03 Harald 7012 Fellbach Lück METHOD AND DEVICE FOR STARTING FLUORESCENT LAMPS

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1142417B (en) * 1957-06-08 1963-01-17 Bbc Brown Boveri & Cie Circuit arrangement for starterless ignition of low-voltage fluorescent lamps
DE3127876A1 (en) * 1981-07-15 1983-02-03 Harald 7012 Fellbach Lück METHOD AND DEVICE FOR STARTING FLUORESCENT LAMPS

Similar Documents

Publication Publication Date Title
ES8102412A1 (en) Fluorescent lighting device
GB618256A (en) Improvements in or relating to a circuit for a gaseous electric discharge device and a method for operating the same
GB685273A (en) Improvements in and relating to starting circuits for fluorescent lamps
GB704582A (en) Improvements in or relating to electrical discharge lamps
GB1108636A (en) High tension spark ignition apparatus for burner installations
GB824906A (en) Improvements in or relating to an operating circuit for electrical discharge lamps
GB897828A (en) A fluorescent lamp operating circuit
GB1303110A (en)
GB511199A (en) Improvements in sources of light comprising a high-pressure mercury vapour electric discharge and an incandescent filament in series with it
GB623303A (en) Means for simultaneously operating two or more discharge lamps
ES347512A1 (en) Starting and operating circuit for gas discharge lamps
GB1496918A (en) Low pressure discharge lamp starting and operating circui
GB667764A (en) Means for operating gas-discharge lamps from a low-voltage source of direct current
GB654292A (en) Improvements in or relating to arc lamps
JPS5219482A (en) Lectrode for use in high-voltage discharge lamps
GB643445A (en) Improvements in and relating to arc lamps and circuits therefor
GB760674A (en) Improvements relating to starting circuits for electric discharge lamps
ES480048A1 (en) Gas appliance with multiple burners - each having electrical ignition system operated by gas supply tap which closes HV switch first
GB855937A (en) Improvements in or relating to circuit arrangements for operating electric lamps
GB419173A (en) An improved switching arrangement for lighting installations
JPS5242666A (en) Device for lighting discharge lamp of high frequency
GB639441A (en) Improvements in circuit arrangements for electric gas discharge lamps
GB741358A (en) Improvements in and relating to ignition and supply circuit arrangements for flash discharge lamps
GB633448A (en) Apparatus for operating electric discharge lamps in series
GB629886A (en) Improvements in and relating to control circuits for low pressure electric dischargelamps