Invention Grant
- Patent Title: Solid-state lighting apparatus and methods using energy storage with segment control
- Patent Title (中): 使用节能控制的固态照明装置和方法
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Application No.: US13616368Application Date: 2012-09-14
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Publication No.: US09131571B2Publication Date: 2015-09-08
- Inventor: Jun Zhang , Liqin Ni
- Applicant: Jun Zhang , Liqin Ni
- Applicant Address: US NC Durham
- Assignee: Cree, Inc.
- Current Assignee: Cree, Inc.
- Current Assignee Address: US NC Durham
- Agency: Myers Bigel Sibley & Sajovec, P.A.
- Main IPC: H05B37/00
- IPC: H05B37/00 ; H05B33/08

Abstract:
A lighting apparatus includes a rectifier circuit configured to be coupled to an AC source and to produce a rectified voltage from an AC voltage and a string including at least two serially-connected LED segments and coupled to the rectifier circuit. A segment control circuit is configured to selectively bypass at least one segment of the string responsive to the rectified voltage. An energy storage circuit is coupled to the rectifier circuit and controls current flow between at least one energy storage device and the string. A control circuit controls the segment control circuit and the energy storage circuit. The segment control circuit may support a current from the rectifier circuit through all of the segments in the string circuit at a peak of the rectified voltage and the energy storage circuit may charge the at least one energy storage device to a voltage near the peak of the rectified voltage.
Public/Granted literature
- US20140077709A1 SOLID-STATE LIGHTING APPARATUS AND METHODS USING ENERGY STORAGE WITH SEGMENT CONTROL Public/Granted day:2014-03-20
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