TW349319B - Apparatus for lighting a discharge lamp - Google Patents

Apparatus for lighting a discharge lamp

Info

Publication number
TW349319B
TW349319B TW086110274A TW86110274A TW349319B TW 349319 B TW349319 B TW 349319B TW 086110274 A TW086110274 A TW 086110274A TW 86110274 A TW86110274 A TW 86110274A TW 349319 B TW349319 B TW 349319B
Authority
TW
Taiwan
Prior art keywords
discharge lamps
lifespan
status
inverter circuit
discharge
Prior art date
Application number
TW086110274A
Other languages
Chinese (zh)
Inventor
Yasunori Yashiro
Kazuhiko Tsugita
Mituhiro Shimojima
Hiroyoshi Tanabe
Masayuki Fujita
Original Assignee
Mitsubishi Electric Corp
Mitsubishi Electric Shomei
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 Mitsubishi Electric Corp, Mitsubishi Electric Shomei filed Critical Mitsubishi Electric Corp
Application granted granted Critical
Publication of TW349319B publication Critical patent/TW349319B/en

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
    • H05B41/36—Controlling
    • H05B41/38—Controlling the intensity of light
    • H05B41/39—Controlling the intensity of light continuously
    • H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor
    • 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
    • H05B41/24—Circuit arrangements in which the lamp is fed by high frequency ac, or with separate oscillator frequency
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
  • Magnetic Record Carriers (AREA)
  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)

Abstract

An apparatus for lighting a discharge lamp, which comprises a d.c. power source, a transistor inverter circuit for transforming the d.c. voltage of the d.c. power source into a high frequency voltage, and a plurality of serially connected discharge lamps lighted by the transistor inverter circuit, a ballast choke controlling the lamp current of the plurality of discharge lamps, start capacitors separately connected to the two ends of the plurality of discharge lamps through an electrode and starting the discharge lamps by the serial resonance of the ballast choke; and is characterized in comprising: a detection circuit for detecting the status of the end of lifespan when at least one of the plurality of discharge lamps has reached the status of the end of lifespan; a control circuit for enabling the normal discharge lamps to remain discharging and the discharge lamp being at the status of the end of lifespan to discontinue discharging and to form an electrode preheating state thereby reducing the output of the transistor inverter circuit.
TW086110274A 1997-05-30 1997-07-19 Apparatus for lighting a discharge lamp TW349319B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9141245A JPH10335075A (en) 1997-05-30 1997-05-30 Discharge lamp lighting device

Publications (1)

Publication Number Publication Date
TW349319B true TW349319B (en) 1999-01-01

Family

ID=15287467

Family Applications (1)

Application Number Title Priority Date Filing Date
TW086110274A TW349319B (en) 1997-05-30 1997-07-19 Apparatus for lighting a discharge lamp

Country Status (3)

Country Link
JP (1) JPH10335075A (en)
KR (2) KR19980024273A (en)
TW (1) TW349319B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3227128B2 (en) * 1998-06-30 2001-11-12 アルプス電気株式会社 Thin film conductor layer, magnetoresistive element using the thin film conductor layer, and method of manufacturing thin film conductor layer
US6232726B1 (en) * 1999-12-28 2001-05-15 Philips Electronics North America Corporation Ballast scheme for operating multiple lamps
CN102914734B (en) * 2011-08-04 2015-04-08 台达电子企业管理（上海）有限公司 End life detection circuit of gas discharge lamp and ballast for ending life detection circuit

Also Published As

Publication number Publication date
JPH10335075A (en) 1998-12-18
KR19980024273A (en) 1998-07-06
KR19980086372A (en) 1998-12-05

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