EP0472265A3 - A method of and a device for regulating the luminosity of a gas-discharge lamp, especially a fluorescent lamp - Google Patents

A method of and a device for regulating the luminosity of a gas-discharge lamp, especially a fluorescent lamp Download PDF

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Publication number
EP0472265A3
EP0472265A3 EP19910304850 EP91304850A EP0472265A3 EP 0472265 A3 EP0472265 A3 EP 0472265A3 EP 19910304850 EP19910304850 EP 19910304850 EP 91304850 A EP91304850 A EP 91304850A EP 0472265 A3 EP0472265 A3 EP 0472265A3
Authority
EP
European Patent Office
Prior art keywords
luminosity
regulating
gas
lamp
discharge lamp
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.)
Withdrawn
Application number
EP19910304850
Other versions
EP0472265A2 (en
Inventor
Ismo Pyoerre
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.)
Teknoware Oy
Original Assignee
Teknoware Oy
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 Teknoware Oy filed Critical Teknoware Oy
Publication of EP0472265A2 publication Critical patent/EP0472265A2/en
Publication of EP0472265A3 publication Critical patent/EP0472265A3/en
Withdrawn legal-status Critical Current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
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/282—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices
    • H05B41/2825—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices by means of a bridge converter in the final stage
    • H05B41/2828—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices by means of a bridge converter in the final stage using control circuits for the switching elements
    • 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
    • H05B41/3921—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations
    • H05B41/3927—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations by pulse width modulation
EP19910304850 1990-08-20 1991-05-29 A method of and a device for regulating the luminosity of a gas-discharge lamp, especially a fluorescent lamp Withdrawn EP0472265A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI904110A FI85320C (en) 1990-08-20 1990-08-20 Method and apparatus for adjusting the light output of a gas-emitted dimming lamp, in particular an incandescent lamp
FI904110 1990-08-20

Publications (2)

Publication Number Publication Date
EP0472265A2 EP0472265A2 (en) 1992-02-26
EP0472265A3 true EP0472265A3 (en) 1992-05-27

Family

ID=8530951

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910304850 Withdrawn EP0472265A3 (en) 1990-08-20 1991-05-29 A method of and a device for regulating the luminosity of a gas-discharge lamp, especially a fluorescent lamp

Country Status (2)

Country Link
EP (1) EP0472265A3 (en)
FI (1) FI85320C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW344190B (en) * 1992-09-22 1998-11-01 Matsushita Electric Works Ltd Discharge lamp lighting device
GB2325099A (en) 1997-05-07 1998-11-11 David John Aarons Gas discharge lamp drive circuit; dimming
EP1297728B1 (en) * 2000-06-20 2005-08-24 Koninklijke Philips Electronics N.V. Circuit device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4388563A (en) * 1981-05-26 1983-06-14 Commodore Electronics, Ltd. Solid-state fluorescent lamp ballast
US4412156A (en) * 1980-09-03 1983-10-25 Elmo Company, Limited Power supply for an ac discharge lamp
GB2162664A (en) * 1984-07-30 1986-02-05 Westinghouse Brake & Signal Power control circuit
US4719558A (en) * 1986-10-24 1988-01-12 Kyoei Densoku Co., Ltd High-frequency power supply output control device
US4884186A (en) * 1987-12-10 1989-11-28 Boschert Incorporated Power supply with reduced switching losses
US4904903A (en) * 1988-04-05 1990-02-27 Innovative Controls, Inc. Ballast for high intensity discharge lamps
US4920299A (en) * 1988-04-27 1990-04-24 General Electric Company Push-pull fluorescent dimming circuit

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4412156A (en) * 1980-09-03 1983-10-25 Elmo Company, Limited Power supply for an ac discharge lamp
US4388563A (en) * 1981-05-26 1983-06-14 Commodore Electronics, Ltd. Solid-state fluorescent lamp ballast
GB2162664A (en) * 1984-07-30 1986-02-05 Westinghouse Brake & Signal Power control circuit
US4719558A (en) * 1986-10-24 1988-01-12 Kyoei Densoku Co., Ltd High-frequency power supply output control device
US4884186A (en) * 1987-12-10 1989-11-28 Boschert Incorporated Power supply with reduced switching losses
US4904903A (en) * 1988-04-05 1990-02-27 Innovative Controls, Inc. Ballast for high intensity discharge lamps
US4920299A (en) * 1988-04-27 1990-04-24 General Electric Company Push-pull fluorescent dimming circuit

Also Published As

Publication number Publication date
FI85320C (en) 1992-03-25
FI904110A0 (en) 1990-08-20
EP0472265A2 (en) 1992-02-26
FI85320B (en) 1991-12-13
FI904110A (en) 1991-12-13

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