发明名称 |
Lamp transformer for use with an electronic dimmer and method for use thereof for reducing acoustic noise |
摘要 |
A controller for reducing acoustic noise produced during use of a leading edge dimmer, includes a leading edge controller responsive to an input voltage fed thereto for producing a control signal upon detection of a leading edge, and a linear switch 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 may be coupled to a leading-trailing edge detector 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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申请公布号 |
US6713974(B2) |
申请公布日期 |
2004.03.30 |
申请号 |
US20020277683 |
申请日期 |
2002.10.23 |
申请人 |
LIGHTECH ELECTRONIC INDUSTRIES LTD. |
发明人 |
PATCHORNIK JOSHUA;BARAK SHAUL |
分类号 |
H02M5/293;H05B39/04;H05B39/08;(IPC1-7):G05F1/00 |
主分类号 |
H02M5/293 |
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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