Portable lighting device
AssigneeMilwaukee Electric Tool Corporation
InventorsLi ZHANG, Hao CUI, DanJun GUO
Life of this patent
Estimating the term…
Abstract
A portable lighting device includes a housing, a light source supported by the housing, and an alkaline battery positioned within the housing and coupled to the light source. The alkaline battery is configured to provide a drive current to the light source, and an intensity of the light source is dependent on the drive current. The portable lighting device also includes an electronic processor positioned within the housing and coupled to the light source and the alkaline battery. The electronic processor is configured to monitor a voltage of the alkaline battery, and execute a ramp-up algorithm to control the drive current based on the voltage of the alkaline battery.
Claims20
A portable lighting device comprising:
- a housing;
- a light source supported by the housing;
- an alkaline battery positioned within the housing and coupled to the light source, wherein the alkaline battery is configured to provide a drive current to the light source and an intensity of the light source is dependent on the drive current;
- and
- an electronic processor positioned within the housing and coupled to the light source and the alkaline battery, wherein the electronic processor is configured to
- monitor a voltage of the alkaline battery, and
- execute a ramp-up algorithm to control the drive current based on the voltage of the alkaline battery, wherein the ramp-up algorithm is executed while the light source is outputting light.
A method of controlling a portable lighting device, the method comprising:
- monitoring, with an electronic processor, a voltage of an alkaline battery,
- wherein the electronic processor is positioned within a housing of the portable lighting device,
- wherein the alkaline battery is coupled to a light source supported by the housing, and
- wherein the alkaline battery is configured to provide a drive current to the light source, and wherein an intensity of the light source is dependent on the drive current;
- and
- executing, with the electronic processor, a ramp-up algorithm to control the drive current based on the voltage of the alkaline battery, wherein the ramp-up algorithm is executed while the light source is outputting light.
A portable lighting device comprising:
- a housing;
- a light source supported by the housing;
- an alkaline battery positioned within the housing and coupled to the light source, wherein the alkaline battery is configured to provide a drive current to the light source and an intensity of the light source is dependent on the drive current;
- and
- an electronic processor positioned within the housing and coupled to the light source and the alkaline battery, wherein the electronic processor is configured to
- monitor a time that the light source has been operating, and
- execute a ramp-down algorithm to control the drive current based on the time that the light source has been operating.
Dependencies are inferred from the claim text.