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GB9810969D0 - Fluorescent lamps - Google Patents

Fluorescent lamps

Info

Publication number
GB9810969D0
GB9810969D0 GBGB9810969.7A GB9810969A GB9810969D0 GB 9810969 D0 GB9810969 D0 GB 9810969D0 GB 9810969 A GB9810969 A GB 9810969A GB 9810969 D0 GB9810969 D0 GB 9810969D0
Authority
GB
United Kingdom
Prior art keywords
fluorescent lamps
lamps
fluorescent
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.)
Granted
Application number
GBGB9810969.7A
Other versions
GB2337644A (en
GB2337644B (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.)
MACKWELLS ELECTRONICS Ltd
Original Assignee
MACKWELLS ELECTRONICS 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 MACKWELLS ELECTRONICS Ltd filed Critical MACKWELLS ELECTRONICS Ltd
Priority to GB9810969A priority Critical patent/GB2337644B/en
Publication of GB9810969D0 publication Critical patent/GB9810969D0/en
Publication of GB2337644A publication Critical patent/GB2337644A/en
Application granted granted Critical
Publication of GB2337644B publication Critical patent/GB2337644B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H05B41/295—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 and specially adapted for lamps with preheating electrodes, e.g. for fluorescent lamps
GB9810969A 1998-05-22 1998-05-22 Fluorescent Lamps for Emergency Lighting Applications Expired - Fee Related GB2337644B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9810969A GB2337644B (en) 1998-05-22 1998-05-22 Fluorescent Lamps for Emergency Lighting Applications

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9810969A GB2337644B (en) 1998-05-22 1998-05-22 Fluorescent Lamps for Emergency Lighting Applications

Publications (3)

Publication Number Publication Date
GB9810969D0 true GB9810969D0 (en) 1998-07-22
GB2337644A GB2337644A (en) 1999-11-24
GB2337644B GB2337644B (en) 2002-07-17

Family

ID=10832494

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9810969A Expired - Fee Related GB2337644B (en) 1998-05-22 1998-05-22 Fluorescent Lamps for Emergency Lighting Applications

Country Status (1)

Country Link
GB (1) GB2337644B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1312178B1 (en) * 1999-04-14 2002-04-09 Sema Elettronica S R L POWER SUPPLY FOR DISCHARGE LAMPS.
DE102005049583A1 (en) 2005-10-17 2007-04-19 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Electronic ballast and method of operating an electric lamp
DE102006024700A1 (en) * 2006-05-26 2007-11-29 Tridonicatco Gmbh & Co. Kg Electronic lamp ballast with heating circuit

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1508130A (en) * 1975-07-22 1978-04-19 Thorn Electrical Ind Ltd Emergency lighting systems
US4286195A (en) * 1979-07-05 1981-08-25 Vultron, Inc. Dimmer circuit for fluorescent lamps
GB2194399B (en) * 1986-06-24 1990-11-14 Radford Of Bristol Limited Fluorescent lighting control
GB9215808D0 (en) * 1992-07-24 1992-09-09 Jsb Electrical Limited An improved lamp fitting
US5668446A (en) * 1995-01-17 1997-09-16 Negawatt Technologies Inc. Energy management control system for fluorescent lighting
DE19529750B4 (en) * 1995-08-12 2012-01-19 Ceag Notlichtsysteme Gmbh Emergency light with conventional ballast

Also Published As

Publication number Publication date
GB2337644A (en) 1999-11-24
GB2337644B (en) 2002-07-17

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20060522