发明授权
- 专利标题： LAMP TRANSFORMER FOR USE WITH AN ELECTRONIC DIMMER AND METHOD FOR USE THEREOF FOR REDUCING ACOUSTIC NOISE
- 专利标题（中）： 变压器灯用电子调光器和方法中使用它的使用降低噪声
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申请号： EP02755612.5申请日： 2002-08-13
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公开(公告)号： EP1466400B1公开(公告)日： 2005-11-02
- 发明人: PATCHORNIK, Joshua , BARAK, Shaul
- 申请人： Lightech Electronic Industries Ltd.
- 申请人地址： 9 Hamelacha Street, Northern Industrial Zone Lod 71520 IL
- 专利权人： Lightech Electronic Industries Ltd.
- 当前专利权人： Lightech Electronic Industries Ltd.
- 当前专利权人地址： 9 Hamelacha Street, Northern Industrial Zone Lod 71520 IL
- 代理机构： Vossius & Partner
- 优先权： IL14757802 20020110
- 国际公布： WO2003058801 20030717
- 主分类号： H02M5/293
- IPC分类号： H02M5/293 ; H05B39/02 ; H05B39/04 ; H05B41/36
摘要：
A controller (20, 30, 50) for reducing acoustic noise produced during use of a leading edge dimmer, includes a leading edge controller (25, 35) responsive to an input voltage fed thereto for producing a control signal upon detection of a leading edge, and a linear switch (26, 36) coupled to the leading edge controller and responsive to the control signal for linearly switching the input voltage so that a rate of rise of the leading edge is decreased. A trailing-edge controller (40) may be coupled to a leading-trailing edge detector (39) and responsive to detection of a trailing edge dimmer for disabling the leading edge controller and decreasing a rate of decline of the trailing edge of the input voltage.
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