WO2001060127A3 - A flashlight - Google Patents

A flashlight Download PDF

Info

Publication number
WO2001060127A3
WO2001060127A3 PCT/GB2001/000358 GB0100358W WO0160127A3 WO 2001060127 A3 WO2001060127 A3 WO 2001060127A3 GB 0100358 W GB0100358 W GB 0100358W WO 0160127 A3 WO0160127 A3 WO 0160127A3
Authority
WO
WIPO (PCT)
Prior art keywords
flashlight
bulb
energy store
convert
supply
Prior art date
Application number
PCT/GB2001/000358
Other languages
French (fr)
Other versions
WO2001060127A2 (en
Inventor
Duncan Andrew Grant
Original Assignee
Univ Bristol
Duncan Andrew Grant
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 Univ Bristol, Duncan Andrew Grant filed Critical Univ Bristol
Priority to AU28683/01A priority Critical patent/AU2868301A/en
Publication of WO2001060127A2 publication Critical patent/WO2001060127A2/en
Publication of WO2001060127A3 publication Critical patent/WO2001060127A3/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
    • H02M3/1588—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load comprising at least one synchronous rectifier element
    • 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
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Abstract

A flashlight is provided which includes a switched mode converter (10) operating to convert the output of an energy store (2) to a fixed voltage for supply to a bulb (8) such that the bulb has constant brightness throughout the useful life of the energy store.
PCT/GB2001/000358 2000-02-08 2001-01-29 A flashlight WO2001060127A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU28683/01A AU2868301A (en) 2000-02-08 2001-01-29 A flashlight

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0002846A GB2359150A (en) 2000-02-08 2000-02-08 Controlling the output of a flashlight or torch
GB0002846.4 2000-02-08

Publications (2)

Publication Number Publication Date
WO2001060127A2 WO2001060127A2 (en) 2001-08-16
WO2001060127A3 true WO2001060127A3 (en) 2001-12-27

Family

ID=9885151

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2001/000358 WO2001060127A2 (en) 2000-02-08 2001-01-29 A flashlight

Country Status (3)

Country Link
AU (1) AU2868301A (en)
GB (1) GB2359150A (en)
WO (1) WO2001060127A2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7652216B2 (en) 2007-12-18 2010-01-26 Streamlight, Inc. Electrical switch, as for controlling a flashlight
US7674003B2 (en) 2006-04-20 2010-03-09 Streamlight, Inc. Flashlight having plural switches and a controller

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6316880B1 (en) * 2000-02-28 2001-11-13 John H. Broadhurst Constant or variable brightness flashlight
US6768047B2 (en) * 2002-06-13 2004-07-27 Koninklijke Philips Electronics N.V. Autonomous solid state lighting system
CN2638483Y (en) * 2003-06-11 2004-09-08 悦诚贸易（国际）有限公司 Flash drive device
WO2009004529A2 (en) * 2007-06-29 2009-01-08 Philips Intellectual Property & Standards Gmbh Synchronous self-driven power converter
CA2778322C (en) 2011-07-06 2018-09-04 Technologie Demtroys Inc. Method of operating a remotely-controlled switching device of an energy management system
CN103731030A (en) * 2012-10-15 2014-04-16 产晶积体电路股份有限公司 Synchronous rectification buck-boost converter
EP2747263B1 (en) 2012-12-18 2015-02-25 Dialog Semiconductor GmbH Back-up capacitor
CN104185335B (en) * 2013-05-23 2017-08-11 海洋王（东莞）照明科技有限公司 Booster type switching regulation circuit and light fixture
US9473908B2 (en) 2013-11-12 2016-10-18 Motorola Solutions, Inc. Method and apparatus for a remote speaker microphone to indicate radio battery charge state with flashlight and strobe control
DE102015111782B3 (en) * 2015-07-21 2017-01-26 Trelock Gmbh Circuit arrangement and method for signaling a low-voltage state in a lighting device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5214353A (en) * 1989-09-22 1993-05-25 Nilssen Ole K Flashlight with boost feature
EP0746186A1 (en) * 1995-06-02 1996-12-04 Nippondenso Co., Ltd. Control apparatus for a lighting system of a discharge lamp used in various types of vehicles
US5661645A (en) * 1996-06-27 1997-08-26 Hochstein; Peter A. Power supply for light emitting diode array
US5661372A (en) * 1994-05-02 1997-08-26 Olympus Optical Co., Ltd. Stroboscopic instrument having a gate-controlled-switching element and a step-up power means therefor
EP0933979A1 (en) * 1998-01-30 1999-08-04 Bureau d'Etudes Eclairage Public B.E.E.P. High frequency power supply for lamps

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7900418A (en) * 1979-01-18 1980-07-22 Bemmel Theodorus Van DC INVERTER.
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
FI881690A (en) * 1988-04-12 1989-10-13 Ins Tsto Pentti Tamminen Ky OVER ANGLE INSTALLATION FOR EXPLOITATION OF LAEGSPAENNINGSSTROEMKAELLOR.
US5418433A (en) 1989-09-22 1995-05-23 Nilssen; Ole K. Flashlight with hybrid battery and electronic control circuit
GB2283586A (en) * 1993-10-26 1995-05-10 Brenda Olliver A battery and lamp economising circuit for hazard warning devices
US5686797A (en) * 1994-05-24 1997-11-11 Bkl, Inc. Electronluminescent lamp inverter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5214353A (en) * 1989-09-22 1993-05-25 Nilssen Ole K Flashlight with boost feature
US5661372A (en) * 1994-05-02 1997-08-26 Olympus Optical Co., Ltd. Stroboscopic instrument having a gate-controlled-switching element and a step-up power means therefor
EP0746186A1 (en) * 1995-06-02 1996-12-04 Nippondenso Co., Ltd. Control apparatus for a lighting system of a discharge lamp used in various types of vehicles
US5661645A (en) * 1996-06-27 1997-08-26 Hochstein; Peter A. Power supply for light emitting diode array
EP0933979A1 (en) * 1998-01-30 1999-08-04 Bureau d'Etudes Eclairage Public B.E.E.P. High frequency power supply for lamps

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7674003B2 (en) 2006-04-20 2010-03-09 Streamlight, Inc. Flashlight having plural switches and a controller
US7652216B2 (en) 2007-12-18 2010-01-26 Streamlight, Inc. Electrical switch, as for controlling a flashlight
US7880100B2 (en) 2007-12-18 2011-02-01 Streamlight, Inc. Electrical switch, as for controlling a flashlight
US8258416B2 (en) 2007-12-18 2012-09-04 Streamlight, Inc. Electrical switch and flashlight
US9478371B2 (en) 2007-12-18 2016-10-25 Streamlight, Inc. Electrical switch, as for controlling a flashlight

Also Published As

Publication number Publication date
GB2359150A (en) 2001-08-15
WO2001060127A2 (en) 2001-08-16
AU2868301A (en) 2001-08-20
GB0002846D0 (en) 2000-03-29

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