GB776178A - Improvements in or relating to electric circuit arrangements for starting and operating from an alternating current supply at least one low pressure electric discharge lamp provided with heatable electrodes - Google Patents

Improvements in or relating to electric circuit arrangements for starting and operating from an alternating current supply at least one low pressure electric discharge lamp provided with heatable electrodes

Info

Publication number
GB776178A
GB776178A GB2717754A GB2717754A GB776178A GB 776178 A GB776178 A GB 776178A GB 2717754 A GB2717754 A GB 2717754A GB 2717754 A GB2717754 A GB 2717754A GB 776178 A GB776178 A GB 776178A
Authority
GB
United Kingdom
Prior art keywords
starting
electrode
supply
operating
primary winding
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
GB2717754A
Inventor
Julius Cates
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 GB2717754A priority Critical patent/GB776178A/en
Publication of GB776178A publication Critical patent/GB776178A/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

  • Discharge Lamps And Accessories Thereof (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

776,178. Supply systems for space discharge lamps. GENERAL ELECTRIC CO., Ltd. Nov. 16, 1955 [Sept. 20, 1954], No. 27177/54. Class 38 (4). In a circuit for starting and operating from an A.C. supply at least one L.P. electric discharge lamp 6 having a pair of heatable electrodes 4, 5, one input terminal 2 is connected through an electrode heating transformer primary winding 7 to one electrode 5 which electrode is connected through a capacitor 11 to a tapping point 12 on a ballast inductor 3 connected between the other electrode 4 and the other input terminal 1 the two electrodes 4, 5 being connected for the supply of heating current to electrode-heating secondary windings 10, 9 of the transformer. As shown, the secondary winding 9 is auto-connected to the primary winding but alternatively it may be separate from the primary winding. On connecting the circuit to a supply a charging pulse of current into the capacitor 11 creates a voltage pulse which is stepped up by the auto-transformer action of tapped inductor 3 and facilitates starting of the lamp, which starting may be facilitated further by the provision of an earthed starting strip not shown or an earthed metal plate forming e.g. part of the fitting, not shown, or by the switch, not shown, by which the supply circuit is made being designed to make and break a number of times when operated. Circuits are described for operating a plurality of series connected or a plurality of parallel connected lamps, and component details of the single lamp embodiment are given.
GB2717754A 1954-09-20 1954-09-20 Improvements in or relating to electric circuit arrangements for starting and operating from an alternating current supply at least one low pressure electric discharge lamp provided with heatable electrodes Expired GB776178A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2717754A GB776178A (en) 1954-09-20 1954-09-20 Improvements in or relating to electric circuit arrangements for starting and operating from an alternating current supply at least one low pressure electric discharge lamp provided with heatable electrodes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2717754A GB776178A (en) 1954-09-20 1954-09-20 Improvements in or relating to electric circuit arrangements for starting and operating from an alternating current supply at least one low pressure electric discharge lamp provided with heatable electrodes

Publications (1)

Publication Number Publication Date
GB776178A true GB776178A (en) 1957-06-05

Family

ID=10255445

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2717754A Expired GB776178A (en) 1954-09-20 1954-09-20 Improvements in or relating to electric circuit arrangements for starting and operating from an alternating current supply at least one low pressure electric discharge lamp provided with heatable electrodes

Country Status (1)

Country Link
GB (1) GB776178A (en)

Similar Documents

Publication Publication Date Title
GB776178A (en) Improvements in or relating to electric circuit arrangements for starting and operating from an alternating current supply at least one low pressure electric discharge lamp provided with heatable electrodes
GB793042A (en) Improvements in or relating to electric circuit arrangements for operating from an alternating current supply one or more electric discharge lamps
GB762489A (en) Improvements in or relating to electric circuit arrangements for starting and operating at least one low pressure electric discharge lamp
ES267433A1 (en) High frequency lighting systems and ballast circuits therefor
GB848548A (en) Starting circuit for electric discharge lamps
GB1265944A (en)
US2162533A (en) Translating device
GB800532A (en) Improvements in or relating to electric circuit arrangements for operating low pressure electric discharge lamps and incorporating starting means for the lamps
KR890002952Y1 (en) Ignition apparatus
GB1008099A (en) Improvements relating to circuit arrangements for operating electric discharge lamps
GB589571A (en) Improvements in and relating to circuits for electric discharge lamps
GB777566A (en) Circuit for electric discharge tubes
GB855937A (en) Improvements in or relating to circuit arrangements for operating electric lamps
GB680362A (en) Improvements relating to the operation of electric discharge lamps
GB830202A (en) Improvements in or relating to circuit arrangem operating electric lamps
GB739042A (en) Improvements in operating circuit arrangements for electric discharge lamps
GB748876A (en) Improvements in or relating to electric circuit arrangements for starting and operating from an alternating current supply two low pressure electric discharge lamps eachhaving two heatable cathodes
GB730024A (en) Improvements in or relating to circuit arrangements for operating electric dischargelamps having heatable electrodes
GB1019066A (en) Improvements relating to the operation of electric discharge lamps from alternating current supplies
GB601360A (en) Improvements in and relating to starting arrangements for electric discharge devices
GB720268A (en) Improvements in or relating to electric circuit arrangements for operating electric discharge lamps
GB786067A (en) Improvements in or relating to electric circuit arrangements for operating gas or vapour filled electric discharge lamps
GB1175252A (en) Improvements in or relating to High-Frequency Generators for Supplying Discharge Tubes.
GB760348A (en) Improvements in or relating to electric circuit arrangements for operating from an alternating current supply (two) or more electric discharge lamps
GB674148A (en) Improvements in or relating to means for controlling the circuit of a discharge lamp