专利检索 ap:("Lightech Electronic Industries Ltd.") AND inv:"BARAK, Shaul" 第 1 页

1.

发明授权
LAMP TRANSFORMER FOR USE WITH AN ELECTRONIC DIMMER AND METHOD FOR USE THEREOF FOR REDUCING ACOUSTIC NOISE 有权
标题翻译：变压器灯用电子调光器和方法中使用它的使用降低噪声

公开(公告)号：EP1466400B1

公开(公告)日：2005-11-02

申请号：EP02755612.5

申请日：2002-08-13

申请人： Lightech Electronic Industries Ltd.

发明人： PATCHORNIK, Joshua , BARAK, Shaul

IPC分类号： H02M5/293 , H05B39/02 , H05B39/04 , H05B41/36

CPC分类号： H02M5/293 , H02M1/44 , H05B39/048 , H05B39/08 , Y02B20/148

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.