GB8909818D0 - Ballast circuits - Google Patents

Ballast circuits

Info

Publication number
GB8909818D0
GB8909818D0 GB898909818A GB8909818A GB8909818D0 GB 8909818 D0 GB8909818 D0 GB 8909818D0 GB 898909818 A GB898909818 A GB 898909818A GB 8909818 A GB8909818 A GB 8909818A GB 8909818 D0 GB8909818 D0 GB 8909818D0
Authority
GB
United Kingdom
Prior art keywords
ballast circuits
ballast
circuits
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Withdrawn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
GB898909818A
Other versions
GB2219877A (en
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.)
MAGNE TEK Inc
Original Assignee
MAGNE TEK Inc
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 MAGNE TEK Inc filed Critical MAGNE TEK Inc
Publication of GB8909818D0 publication Critical patent/GB8909818D0/en
Publication of GB2219877A publication Critical patent/GB2219877A/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Withdrawn legal-status Critical Current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
    • H05B41/36—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
    • H05B41/16—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
    • 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
GB8909818A 1988-05-03 1989-04-28 Operating circuits for fluorescent lamps Withdrawn GB2219877A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US18975388A 1988-05-03 1988-05-03

Publications (2)

Publication Number Publication Date
GB8909818D0 true GB8909818D0 (en) 1989-06-14
GB2219877A GB2219877A (en) 1989-12-20

Family

ID=22698627

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8909818A Withdrawn GB2219877A (en) 1988-05-03 1989-04-28 Operating circuits for fluorescent lamps

Country Status (5)

Country Link
JP (1) JPH0260097A (en)
DE (1) DE3914676A1 (en)
FR (1) FR2631508A1 (en)
GB (1) GB2219877A (en)
MX (1) MX170570B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2253077A (en) * 1991-01-23 1992-08-26 Carl Edmund Smith Power control system for gas discharge tubes
AT403865B (en) * 1991-07-10 1998-06-25 Fronius Schweissmasch VOLTAGE CONVERSION DEVICE FOR A DC VOLTAGE CONSUMER
US5831420A (en) * 1997-04-28 1998-11-03 Motorola, Inc. Pulse load averaging power converter

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4251752A (en) * 1979-05-07 1981-02-17 Synergetics, Inc. Solid state electronic ballast system for fluorescent lamps
US4437146A (en) * 1982-08-09 1984-03-13 Pacific Electro Dynamics, Inc. Boost power supply having power factor correction circuit
ZA862614B (en) * 1986-04-08 1986-12-30 David John Cockram Controller for gas discharge lamps
US4677366A (en) * 1986-05-12 1987-06-30 Pioneer Research, Inc. Unity power factor power supply
GB8800527D0 (en) * 1988-01-11 1988-02-10 Farnell Instr Ltd Control arrangement for switched mode power supply

Also Published As

Publication number Publication date
DE3914676A1 (en) 1989-12-07
GB2219877A (en) 1989-12-20
JPH0260097A (en) 1990-02-28
FR2631508A1 (en) 1989-11-17
MX170570B (en) 1993-08-31

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)