DE69533681D1 - Ballast with large effective range for fluorescent lamps - Google Patents

Ballast with large effective range for fluorescent lamps

Info

Publication number
DE69533681D1
DE69533681D1 DE69533681T DE69533681T DE69533681D1 DE 69533681 D1 DE69533681 D1 DE 69533681D1 DE 69533681 T DE69533681 T DE 69533681T DE 69533681 T DE69533681 T DE 69533681T DE 69533681 D1 DE69533681 D1 DE 69533681D1
Authority
DE
Germany
Prior art keywords
ballast
fluorescent lamps
effective range
large effective
lamps
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 - Lifetime
Application number
DE69533681T
Other languages
German (de)
Inventor
James M 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.)
Linear Technology LLC
Original Assignee
Linear Technology LLC
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 Linear Technology LLC filed Critical Linear Technology LLC
Application granted granted Critical
Publication of DE69533681D1 publication Critical patent/DE69533681D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H05B41/2821—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 single-switch converter or a parallel push-pull converter in the final stage
    • H05B41/2824—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 single-switch converter or a parallel push-pull converter in the final stage using control circuits for the switching element
    • 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
    • H05B41/3925—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations by frequency variation
DE69533681T 1994-03-16 1995-03-15 Ballast with large effective range for fluorescent lamps Expired - Lifetime DE69533681D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US21386594A 1994-03-16 1994-03-16

Publications (1)

Publication Number Publication Date
DE69533681D1 true DE69533681D1 (en) 2004-12-02

Family

ID=22796816

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69533681T Expired - Lifetime DE69533681D1 (en) 1994-03-16 1995-03-15 Ballast with large effective range for fluorescent lamps

Country Status (3)

Country Link
EP (1) EP0673184B1 (en)
JP (1) JPH0855691A (en)
DE (1) DE69533681D1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19733939A1 (en) * 1997-08-06 1999-02-11 Mannesmann Vdo Ag Fluorescent lamp dimming circuit
EP0978221B1 (en) 1997-04-24 2004-12-22 Siemens Aktiengesellschaft Circuitry for dimming a fluorescent lamp
US6107751A (en) * 1998-12-01 2000-08-22 Billings; Keith Current fed, parallel resonant ballast
DE10254983A1 (en) * 2002-11-26 2004-06-03 Robert Bosch Gmbh Electrical circuit for controlling several discharge tubes
AU2008222617A1 (en) * 2007-03-08 2008-09-12 Cp Envirotech Pty Ltd Improved lighting apparatus
CN102448235B (en) * 2010-10-13 2013-12-11 硕颉科技股份有限公司 Device and method for driving fluorescent lamp tube
ITBO20120672A1 (en) * 2012-12-17 2014-06-18 Schneider Electric Ind Italia S P A POWER OSCILLATOR CIRCUIT FOR LIGHTING SOURCES AND OTHER EQUIVALENT ELECTRIC USERS

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4920302A (en) * 1987-01-27 1990-04-24 Zenith Electronics Corporation Fluorescent lamp power supply
US5001386B1 (en) * 1989-12-22 1996-10-15 Lutron Electronics Co Circuit for dimming gas discharge lamps without introducing striations

Also Published As

Publication number Publication date
EP0673184A2 (en) 1995-09-20
EP0673184A3 (en) 1996-08-28
JPH0855691A (en) 1996-02-27
EP0673184B1 (en) 2004-10-27

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Legal Events

Date Code Title Description
8332 No legal effect for de