| http://www.w3.org/ns/prov#value | - Another such embodiment further includes a battery-voltage-measuring circuit coupled to the control circuit. [0019] Yet another aspect of the present invention provides a method for driving battery-powered portable flashlight (100) having a casing (110), a DC power source mounted to the casing, one or more solid-state light-emitting device (LEDs) (150) mounted to the casing, the method including t
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