发明名称 |
SOLID STATE LIGHTING APPARATUS WITH COMPENSATION BYPASS CIRCUITS AND METHODS OF OPERATION THEREOF |
摘要 |
A lighting apparatus includes a string of serially-connected light emitting devices and a bypass circuit coupled to first and second nodes of the string and configured to variably conduct a bypass current around at least one of the light-emitting devices responsive to a temperature and/or a total current in the string. In some embodiments, the bypass circuit includes a variable resistance circuit coupled to the first and second nodes of the string and configured to variably conduct the bypass current around the at least one of the light-emitting devices responsive to a control voltage applied to a control node and a compensation circuit coupled to the control node and configured to vary the control voltage responsive to a temperature and/or total string current.
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申请公布号 |
US2011068701(A1) |
申请公布日期 |
2011.03.24 |
申请号 |
US20100704730 |
申请日期 |
2010.02.12 |
申请人 |
CREE LED LIGHTING SOLUTIONS, INC. |
发明人 |
VAN DE VEN ANTONY P.;NEGLEY GERALD H.;HARRIS MICHAEL JAMES;PICKARD PAUL KENNETH;CHOBOT JOSEPH PAUL;GIVEN TERRY |
分类号 |
H05B37/02 |
主分类号 |
H05B37/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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