GB1445291A - Discharge lamp starting arrangement - Google Patents

Discharge lamp starting arrangement

Info

Publication number
GB1445291A
GB1445291A GB1343174A GB1343174A GB1445291A GB 1445291 A GB1445291 A GB 1445291A GB 1343174 A GB1343174 A GB 1343174A GB 1343174 A GB1343174 A GB 1343174A GB 1445291 A GB1445291 A GB 1445291A
Authority
GB
United Kingdom
Prior art keywords
transistor
lamp
electrodes
conductive
ignition
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
GB1343174A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated 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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1445291A publication Critical patent/GB1445291A/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
    • H05B41/02—Details
    • H05B41/04—Starting switches
    • H05B41/042—Starting switches using semiconductor devices
    • H05B41/044—Starting switches using semiconductor devices for lamp provided with pre-heating electrodes
    • H05B41/046—Starting switches using semiconductor devices for lamp provided with pre-heating electrodes using controlled semiconductor devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S315/00—Electric lamp and discharge devices: systems
    • Y10S315/02—High frequency starting operation for fluorescent lamp
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S315/00—Electric lamp and discharge devices: systems
    • Y10S315/05—Starting and operating circuit for fluorescent lamp

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

1445291 Control and starting systems for vapour discharge lamps PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 26 March 1974 [30 Maich 1973] 13431/74 Heading H2H A circuit arrangement for igniting and supplying a gas or vapour discharge lamp having preheatable electrodes comprises an ignition device which includes a transistor which is rendered alternately conductive and non-conductive at a high frequency during the initial part of the igniting process, and a further switching element being provided to assist the ignition process during the remaining part thereof. A gas discharge lamp 5 having preheatable electrodes 3, 4, one end of each of which are connected to A.C. supply terminals 1, 2 respectively, the connection to terminal 1 including an inductive ballast 6. The other ends of the electrodes 3, 4 are connected to the input terminals 7, 8 of a diode bridge 9-12, the output terminals 13, 14 of which are interconnected by a transistor 17 forming part of an ignition device for the lamp 5. A resistor capacitor circuit 19, 20 having a very short time constant is also connected across the bridge output terminals 13, 14 and serves to render, by way of a diac 24, the transistor 17 alternately conductive and non-conductive thereby causing high voltage peaks to occur between the lamp electrodes 3, 4 which causes the initial preheating of the lamp electrodes. As the amplitude of the voltage peaks increases, a neon tube 24 eventually breaks down whereupon a thyristor 23 becomes conductive which causes the transistor 17 to become inoperative and also continues the electrode preheating process. This ignition procedure repeats during each half cycle of the A.C. supply voltage until the lamp 5 ignites whereupon the ignition device is rendered inoperative. A negative temperature coefficient resistor 22 is provided in parallel with the capacitor 24, the function of which is to terminate the ignition process should the lamp fail to ignite within a predetermined period. In a further embodiment the thyristor is connected between the output terminal 13 and the base of the transistor 17 in which case the transistor functions to generate the voltage peaks and also to carry the subsequent preheating current.
GB1343174A 1973-03-30 1974-03-26 Discharge lamp starting arrangement Expired GB1445291A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7311530A FR2223932B1 (en) 1973-03-30 1973-03-30

Publications (1)

Publication Number Publication Date
GB1445291A true GB1445291A (en) 1976-08-11

Family

ID=9117150

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1343174A Expired GB1445291A (en) 1973-03-30 1974-03-26 Discharge lamp starting arrangement

Country Status (10)

Country Link
US (1) US3919590A (en)
JP (1) JPS49128580A (en)
BE (1) BE812978A (en)
CH (1) CH580378A5 (en)
DE (1) DE2413611A1 (en)
ES (1) ES424718A1 (en)
FR (1) FR2223932B1 (en)
GB (1) GB1445291A (en)
IT (1) IT1003906B (en)
NL (1) NL7404031A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2194400A (en) * 1986-08-04 1988-03-02 Transtar Ltd Starter & discharge lamp including it

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4079292A (en) * 1975-01-09 1978-03-14 New Nippon Electric Company, Ltd. Arc discharge sustaining circuit system for a discharge lamp
US4039895A (en) * 1975-02-20 1977-08-02 U.S. Philips Corporation Device for starting and feeding a discharge lamp
FR2353199A1 (en) * 1976-01-08 1977-12-23 New Nippon Electric Co Electric discharge lamp power supply unit - has low frequency current supply with high frequency voltage superimposed
DE2602604C2 (en) * 1976-01-24 1982-04-22 New Nippon Electric Co., Ltd., Osaka Circuit arrangement for igniting and operating a gas discharge lamp
GB1568310A (en) * 1976-12-13 1980-05-29 Kuroi Kosan Kk Discharge lamp lighting devices
DE3047289A1 (en) * 1980-12-16 1982-07-29 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München IGNITION DEVICE FOR A LOW-PRESSURE DISCHARGE LAMP
JPS57170496A (en) * 1981-04-15 1982-10-20 Hitachi Shomei Kk Device for firing discharge lamp
US4642525A (en) * 1985-04-15 1987-02-10 Widmayer Don F Transient control circuit for fluorescent lamp systems
WO1994023551A1 (en) * 1993-04-05 1994-10-13 Idea Inc New fluorescent starter
BE1007611A3 (en) * 1993-10-11 1995-08-22 Philips Electronics Nv Shifting.
US5537010A (en) * 1994-06-10 1996-07-16 Beacon Light Products, Inc. Voltage-comparator, solid-state, current-switch starter for fluorescent lamp
US5504398A (en) * 1994-06-10 1996-04-02 Beacon Light Products, Inc. Dimming controller for a fluorescent lamp
US5955847A (en) * 1994-06-10 1999-09-21 Beacon Light Products, Inc. Method for dimming a fluorescent lamp
US5583395A (en) * 1994-10-11 1996-12-10 Lu; Chao-Cheng Fluorescent device having a fluorescent starter which precisely controls heating time and absolute synchronism of fire point
GB9509234D0 (en) * 1995-05-05 1995-06-28 Bailey Arthur R High frequency fluorescent lamp circuit with ballast protection
US5736817A (en) * 1995-09-19 1998-04-07 Beacon Light Products, Inc. Preheating and starting circuit and method for a fluorescent lamp
JPH09266080A (en) * 1996-03-29 1997-10-07 Matsushita Electric Works Ltd Light source lighting device
US5861720A (en) * 1996-11-25 1999-01-19 Beacon Light Products, Inc. Smooth switching power control circuit and method
US5861721A (en) * 1996-11-25 1999-01-19 Beacon Light Products, Inc. Smooth switching module
DE10125510A1 (en) * 2001-05-23 2002-12-05 Innolux Gmbh fluorescent lamp circuit
JP4909199B2 (en) * 2007-07-13 2012-04-04 浜松ホトニクス株式会社 Discharge lamp control device and light source device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3676734A (en) * 1968-11-15 1972-07-11 Tokai Rika Co Ltd Electric circuit for rapidly igniting a discharge tube
US3644780A (en) * 1968-12-27 1972-02-22 Matsushita Electric Ind Co Ltd Starting device for discharge lamp including semiconductors preheating and starting circuits
JPS4935793B1 (en) * 1969-07-25 1974-09-25
AT308905B (en) * 1970-04-09 1973-07-25 Ernst Voegeli Ballast for heated gas discharge tubes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2194400A (en) * 1986-08-04 1988-03-02 Transtar Ltd Starter & discharge lamp including it
GB2194400B (en) * 1986-08-04 1991-04-17 Transtar Ltd Starter and discharge lamp including it

Also Published As

Publication number Publication date
ES424718A1 (en) 1976-06-01
BE812978A (en) 1974-09-30
US3919590A (en) 1975-11-11
CH580378A5 (en) 1976-09-30
JPS49128580A (en) 1974-12-09
IT1003906B (en) 1976-06-10
NL7404031A (en) 1974-10-02
DE2413611A1 (en) 1974-10-17
FR2223932A1 (en) 1974-10-25
FR2223932B1 (en) 1978-03-10

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee