Electronic control to regulate power for solid-state lighting and methods thereof
First Claim
1. An illumination device, comprising:
- a plurality of light emitters, a first number of light emitters of the plurality of light emitters being electrically coupled in series to an input power;
a plurality of switches which when deactivated electrically couple a respective number of the light emitters to the input power in addition to the first number of the light emitters, wherein each of the plurality of switches is electrically coupled to short a respective one of the light emitters when activated; and
a control circuit controllingly coupled to the plurality of switches to activate and deactivate the switches in response to a sensed operational parameter of the input power being greater than a first threshold value, where the first number of the light emitters is coupled to the input power regardless of the sensed operational parameter of the input power.
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Accused Products
Abstract
Apparatus and methods to regulate an input power applied to a plurality of light emitters are provided. A regulator device includes a plurality of switches and a control circuit that controls the plurality of switches. The plurality of switches selectively couple respective strings of the light emitters in series to the input power to emit light when deactivated. The control circuit may deactivate a number of the switches to couple the respective light emitters to the input power in response to a sensed operational parameter of the input power. The control circuit may adjust the number of the switches deactivated in response to a change in the sensed operational parameter of the input power. A number of the light emitters may be coupled to the input power regardless of the sensed operational parameter of the input power.
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Citations
21 Claims
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1. An illumination device, comprising:
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a plurality of light emitters, a first number of light emitters of the plurality of light emitters being electrically coupled in series to an input power; a plurality of switches which when deactivated electrically couple a respective number of the light emitters to the input power in addition to the first number of the light emitters, wherein each of the plurality of switches is electrically coupled to short a respective one of the light emitters when activated; and a control circuit controllingly coupled to the plurality of switches to activate and deactivate the switches in response to a sensed operational parameter of the input power being greater than a first threshold value, where the first number of the light emitters is coupled to the input power regardless of the sensed operational parameter of the input power. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification