Title:
懐中電灯および再充電可能な携帯用電子装置のための改良された回路
Document Type and Number:
Japanese Patent JP2009529758
Kind Code:
A
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.
Inventors:
Stacy H. West
Application Number:
JP2008554309A
Publication Date:
August 20, 2009
Filing Date:
February 05, 2007
Export Citation:
Assignee:
MAG Instruments Incorporated
International Classes:
H05B39/02; F21L4/00; H05B37/02; F21Y101/00; F21Y101/02
Domestic Patent References:
| JPH1168532A | 1999-03-09 | |||
| JP2004253226A | 2004-09-09 | |||
| JP2004055460A | 2004-02-19 | |||
| JPH0297795U | 1990-08-03 | |||
| JP2001101901A | 2001-04-13 |
Attorney, Agent or Firm:
Hiroshi Yamazaki
Mitsuo Tanaka
Atsushi Maeda
Mitsuo Tanaka
Atsushi Maeda