TW200742490A - Improved circuitry for portable lighting devices and portable rechargeable electronic devices - Google Patents

Improved circuitry for portable lighting devices and portable rechargeable electronic devices

Info

Publication number
TW200742490A
TW200742490A TW096104423A TW96104423A TW200742490A TW 200742490 A TW200742490 A TW 200742490A TW 096104423 A TW096104423 A TW 096104423A TW 96104423 A TW96104423 A TW 96104423A TW 200742490 A TW200742490 A TW 200742490A
Authority
TW
Taiwan
Prior art keywords
portable
devices
rechargeable electronic
flashlight
electronic devices
Prior art date
Application number
TW096104423A
Other languages
Chinese (zh)
Inventor
Stacey H West
Original Assignee
Mag Instr 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
Priority claimed from US11/007,771 external-priority patent/US7579782B2/en
Priority claimed from US11/351,307 external-priority patent/US7723921B2/en
Application filed by Mag Instr Inc filed Critical Mag Instr Inc
Publication of TW200742490A publication Critical patent/TW200742490A/en

Links

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

A portable electronic device, such as a flashlight, with a circuit for reducing the initial surge of current that is sent through the lamp filament when a flashlight is turned on is provided. The circuit reduces the stresses placed on the lamp bulb when it is turned on, thereby extending the life expectancy of the lamp bulb. A flashlight with beacon mode that produces light according to a duty cycle of less than 11% is also disclosed.
TW096104423A 2004-12-07 2007-02-07 Improved circuitry for portable lighting devices and portable rechargeable electronic devices TW200742490A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/007,771 US7579782B2 (en) 2004-12-07 2004-12-07 Circuitry for portable lighting devices and portable rechargeable electronic devices
US11/351,307 US7723921B2 (en) 2004-12-07 2006-02-08 Circuitry for portable lighting devices and portable rechargeable electronic devices

Publications (1)

Publication Number Publication Date
TW200742490A true TW200742490A (en) 2007-11-01

Family

ID=57914120

Family Applications (1)

Application Number Title Priority Date Filing Date
TW096104423A TW200742490A (en) 2004-12-07 2007-02-07 Improved circuitry for portable lighting devices and portable rechargeable electronic devices

Country Status (1)

Country Link
TW (1) TW200742490A (en)

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