H - Electricity – 05 – B
Patent
H - Electricity
05
B
H05B 37/00 (2006.01) F21L 4/04 (2006.01)
Patent
CA 2641159
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.
La présente invention concerne un dispositif électronique portable, comme un flash, avec un circuit pour réduire la surtension initiale de courant envoyée via le filament de lampe lorsqu'un flash est activé. Le circuit réduit les tensions placées sur l'ampoule lorsqu'elle est activée, prolongeant ainsi la durée de vie attendue de l'ampoule. L'invention concerne également un flash avec un mode de balisage qui produit de la lumière en fonction d'un cycle de travail inférieur à 11 %.
Gowling Lafleur Henderson Llp
Mag Instrument Inc.
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