Step down circuit for an LED flashlight

Details Step down circuit for an LED flashlight Step down circuit for an LED flashlight

2006-01-17

2006-01-17

Tran, Thuy Vinh (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

C362S205000

Reexamination Certificate

active

06987366

ABSTRACT:
The present invention relates to a voltage reducing circuit for use with an LED flashlight. The LED flashlight according to the invention comprises a battery, a solid state light source having an on voltage less than the voltage of the battery, and a voltage reducing circuit in electrical communication with the battery and the solid state light source. The voltage reducing circuit is operative to reduce the voltage from the battery to a level that is slightly above the on-voltage threshold of the solid state light source. In this manner, power expended from the battery by the solid state light source is minimized such that the need for battery replacement is prolonged.

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