GB800532A - Improvements in or relating to electric circuit arrangements for operating low pressure electric discharge lamps and incorporating starting means for the lamps - Google Patents

Improvements in or relating to electric circuit arrangements for operating low pressure electric discharge lamps and incorporating starting means for the lamps

Info

Publication number
GB800532A
GB800532A GB1300355A GB1300355A GB800532A GB 800532 A GB800532 A GB 800532A GB 1300355 A GB1300355 A GB 1300355A GB 1300355 A GB1300355 A GB 1300355A GB 800532 A GB800532 A GB 800532A
Authority
GB
United Kingdom
Prior art keywords
starting
lamps
capacitor
voltage
series
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
GB1300355A
Inventor
Julius Cates
Charles Edington Williams
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 GB1300355A priority Critical patent/GB800532A/en
Publication of GB800532A publication Critical patent/GB800532A/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

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

800,532. Starting low-pressure discharge lamps. GENERAL ELECTRIC CO., Ltd. May 4, 1956 [May 4, 1955], No. 13003/55. Class 38 (4). An A.C. low-pressure discharge lamp 1, or a plurality of lamps in series, used particularly for aircraft flashing beacons, has a high-voltage D.C. pulse applied to its starting conductor 4 from an auxiliary supply to ensure striking of the lamp. The starting circuit comprises an inductor 17 in series with relay contact 18 and resistor 19 connected across D.C. terminals 20, 21 in parallel with relay 24 and switch 25. Closing switch 25 energizes relay 24, closing contact 8 then opening contacts 11, 18, the latter inducing a high voltage pulse in inductor 17 which is applied to conductor 4 of lamp 1. The electrodes 2, 3 are fed from transformer secondary windings 12, 13, the primary 9 being connected across the A.C. terminals 5, 6, in series with a resistor 10 to reduce the voltage when running. A capacitor 14 connected between terminal 6 and a tap on the ballast choke 7 improves the power factor; also, the initial charging current causes an increased voltage to be induced across choke 7, thus further aiding the starting conditions. In another embodiment (not shown) a separate capacitor connected across the supply improves the power factor, and capacitor 14 is adjusted to give a smaller starting pulse. An alternative starting circuit (also not shown) utilizes a capacitor discharging into an autotransformer.
GB1300355A 1955-05-04 1955-05-04 Improvements in or relating to electric circuit arrangements for operating low pressure electric discharge lamps and incorporating starting means for the lamps Expired GB800532A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1300355A GB800532A (en) 1955-05-04 1955-05-04 Improvements in or relating to electric circuit arrangements for operating low pressure electric discharge lamps and incorporating starting means for the lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1300355A GB800532A (en) 1955-05-04 1955-05-04 Improvements in or relating to electric circuit arrangements for operating low pressure electric discharge lamps and incorporating starting means for the lamps

Publications (1)

Publication Number Publication Date
GB800532A true GB800532A (en) 1958-08-27

Family

ID=10015051

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1300355A Expired GB800532A (en) 1955-05-04 1955-05-04 Improvements in or relating to electric circuit arrangements for operating low pressure electric discharge lamps and incorporating starting means for the lamps

Country Status (1)

Country Link
GB (1) GB800532A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2168861A (en) * 1984-12-21 1986-06-25 Gerger Scient Instr Company Th Flashing lamp unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2168861A (en) * 1984-12-21 1986-06-25 Gerger Scient Instr Company Th Flashing lamp unit

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