GB9622768D0 - Fluorescent lamp failure warning device - Google Patents

Fluorescent lamp failure warning device

Info

Publication number
GB9622768D0
GB9622768D0 GBGB9622768.1A GB9622768A GB9622768D0 GB 9622768 D0 GB9622768 D0 GB 9622768D0 GB 9622768 A GB9622768 A GB 9622768A GB 9622768 D0 GB9622768 D0 GB 9622768D0
Authority
GB
United Kingdom
Prior art keywords
fluorescent lamp
warning device
failure warning
lamp failure
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.)
Pending
Application number
GBGB9622768.1A
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.)
LAB CRAFT Ltd
Original Assignee
LAB CRAFT 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 LAB CRAFT Ltd filed Critical LAB CRAFT Ltd
Priority to GBGB9622768.1A priority Critical patent/GB9622768D0/en
Publication of GB9622768D0 publication Critical patent/GB9622768D0/en
Priority to GB9714763A priority patent/GB2318932B/en
Pending 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
    • H05B41/298—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2981—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
    • H05B41/2985—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against abnormal lamp operating conditions
    • 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
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/20—Responsive to malfunctions or to light source life; for protection
GBGB9622768.1A 1996-11-01 1996-11-01 Fluorescent lamp failure warning device Pending GB9622768D0 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GBGB9622768.1A GB9622768D0 (en) 1996-11-01 1996-11-01 Fluorescent lamp failure warning device
GB9714763A GB2318932B (en) 1996-11-01 1997-07-15 Fluorescent lamp failure warning system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB9622768.1A GB9622768D0 (en) 1996-11-01 1996-11-01 Fluorescent lamp failure warning device

Publications (1)

Publication Number Publication Date
GB9622768D0 true GB9622768D0 (en) 1997-01-08

Family

ID=10802290

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB9622768.1A Pending GB9622768D0 (en) 1996-11-01 1996-11-01 Fluorescent lamp failure warning device
GB9714763A Expired - Fee Related GB2318932B (en) 1996-11-01 1997-07-15 Fluorescent lamp failure warning system

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB9714763A Expired - Fee Related GB2318932B (en) 1996-11-01 1997-07-15 Fluorescent lamp failure warning system

Country Status (1)

Country Link
GB (2) GB9622768D0 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2326543B (en) 1997-06-19 1999-12-08 Toshiba Lighting & Technology Lighting apparatus
GB2405734B (en) * 2003-09-04 2006-03-15 Sandra Hardy Light Bulb
WO2009062552A1 (en) * 2007-11-15 2009-05-22 Osram Gesellschaft mit beschränkter Haftung Apparatus and method for testing of wiring for at least one discharge lamp

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4667131A (en) * 1984-05-18 1987-05-19 Nilssen Ole K Protection circuit for fluorescent lamp ballasts
DE3247863A1 (en) * 1982-12-23 1984-06-28 Siemens AG, 1000 Berlin und 8000 München ARRANGEMENT FOR SWITCHING OFF A INVERTER
DE3805510A1 (en) * 1988-02-22 1989-08-31 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh CIRCUIT ARRANGEMENT FOR OPERATING A LOW-PRESSURE DISCHARGE LAMP
US5027034A (en) * 1989-10-12 1991-06-25 Honeywell Inc. Alternating cathode florescent lamp dimmer

Also Published As

Publication number Publication date
GB2318932B (en) 2000-09-06
GB9714763D0 (en) 1997-09-17
GB2318932A (en) 1998-05-06

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