GB9414477D0 - Hazard warning devices - Google Patents

Hazard warning devices

Info

Publication number
GB9414477D0
GB9414477D0 GB9414477A GB9414477A GB9414477D0 GB 9414477 D0 GB9414477 D0 GB 9414477D0 GB 9414477 A GB9414477 A GB 9414477A GB 9414477 A GB9414477 A GB 9414477A GB 9414477 D0 GB9414477 D0 GB 9414477D0
Authority
GB
United Kingdom
Prior art keywords
warning devices
hazard warning
hazard
devices
warning
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Withdrawn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
GB9414477A
Other versions
GB2286065A (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.)
LINK PLASTICS Ltd
Original Assignee
LINK PLASTICS 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 LINK PLASTICS Ltd filed Critical LINK PLASTICS Ltd
Publication of GB9414477D0 publication Critical patent/GB9414477D0/en
Publication of GB2286065A publication Critical patent/GB2286065A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/44—Testing lamps
    • 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
    • H05B39/00—Circuit arrangements or apparatus for operating incandescent light sources
    • H05B39/02—Switching on, e.g. with predetermined rate of increase of lighting current
    • 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
    • H05B39/00—Circuit arrangements or apparatus for operating incandescent light sources
    • H05B39/04—Controlling
    • H05B39/041—Controlling the light-intensity of the source
    • H05B39/044—Controlling the light-intensity of the source continuously
    • H05B39/047—Controlling the light-intensity of the source continuously with pulse width modulation from a DC power source
    • 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
    • H05B39/00—Circuit arrangements or apparatus for operating incandescent light sources
    • H05B39/09—Circuit arrangements or apparatus for operating incandescent light sources in which the lamp is fed by pulses
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
GB9414477A 1993-10-26 1994-07-18 Hazard warning lamp Withdrawn GB2286065A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9322057A GB2283586A (en) 1993-10-26 1993-10-26 A battery and lamp economising circuit for hazard warning devices

Publications (2)

Publication Number Publication Date
GB9414477D0 true GB9414477D0 (en) 1994-09-07
GB2286065A GB2286065A (en) 1995-08-02

Family

ID=10744135

Family Applications (3)

Application Number Title Priority Date Filing Date
GB9322057A Withdrawn GB2283586A (en) 1993-10-26 1993-10-26 A battery and lamp economising circuit for hazard warning devices
GB9414477A Withdrawn GB2286065A (en) 1993-10-26 1994-07-18 Hazard warning lamp
GB9421334A Withdrawn GB2288890A (en) 1993-10-26 1994-10-24 A lamp economising circuit for hazard warning devices

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB9322057A Withdrawn GB2283586A (en) 1993-10-26 1993-10-26 A battery and lamp economising circuit for hazard warning devices

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB9421334A Withdrawn GB2288890A (en) 1993-10-26 1994-10-24 A lamp economising circuit for hazard warning devices

Country Status (1)

Country Link
GB (3) GB2283586A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2778524A1 (en) * 1998-05-06 1999-11-12 Caligo LIGHTING DEVICE, ESPECIALLY A FRONT LAMP, HAVING A NORMAL OPERATING MODE AND AN ECONOMIC OPERATING MODE
GB2344230A (en) * 1998-11-04 2000-05-31 Anwyl Davies Nicholas An energy saving LED torch
GB2359150A (en) * 2000-02-08 2001-08-15 Univ Bristol Controlling the output of a flashlight or torch
EP2326146B1 (en) * 2008-03-11 2014-10-29 Daniamant APS A method and device for driving a light source
CN108124345B (en) * 2016-11-30 2022-08-05 嘉兴山蒲照明电器有限公司 LED fluorescent lamp and drive circuit thereof
CN104456291A (en) * 2014-10-31 2015-03-25 广东泰卓光电科技股份有限公司 LED streetlamp assembling and testing process
CN107238807A (en) * 2017-08-02 2017-10-10 东华理工大学 A kind of intelligent electric power parameter detection device

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4504776A (en) * 1980-11-12 1985-03-12 Bei Electronics, Inc. Power saving regulated light emitting diode circuit
US4499525A (en) * 1981-12-16 1985-02-12 Duracell Inc. Constant illumination flashlight
US4570108A (en) * 1982-07-06 1986-02-11 Stroede Aake Protection device for electrical incandescent lamps
JPS5978495A (en) * 1982-10-27 1984-05-07 オリンパス光学工業株式会社 Lamp firing circuit
US4580088A (en) * 1984-02-29 1986-04-01 General Electric Company Soft-starting phase-control circuit for low voltage load
US4617496A (en) * 1984-05-30 1986-10-14 Samodovitz Arthur J Warm-up circuit with timed shut-off of the warm-up current
GB8531853D0 (en) * 1985-12-30 1986-02-05 Danor Electronics Ltd Vehicle lighting system
EP0285417A3 (en) * 1987-03-31 1989-03-01 General Electric Company Soft start solid state switch
GB2219896A (en) * 1988-06-14 1989-12-20 Bosch Gmbh Robert Operating incandescent light bulbs to prevent surge currents
FR2642237B1 (en) * 1989-01-20 1996-06-21 Thomson Csf CONTROL DEVICE FOR CUT-OUT POWER SUPPLY AND CUT-OUT POWER SUPPLY PROVIDED WITH SUCH A DEVICE
IT1232073B (en) * 1989-03-31 1992-01-23 Marelli Autronica ELECTRONIC DISPLAY AND CONTROL UNIT OF A SYSTEM IN PARTICULAR CONTROL UNIT OF A AIR CONDITIONING SYSTEM FOR USE ON BOARD A VEHICLE
US4987348A (en) * 1989-12-15 1991-01-22 North American Philips Corporation Bilevel current limiter
GB2275141B (en) * 1993-02-12 1995-12-06 Lumisphere Products Ltd Warning beacon

Also Published As

Publication number Publication date
GB2288890A (en) 1995-11-01
GB9322057D0 (en) 1993-12-15
GB2283586A (en) 1995-05-10
GB9421334D0 (en) 1994-12-07
GB2286065A (en) 1995-08-02

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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)