发明公开
EP1725085A1 Stepped dimming ballast for fluorescent lamps
审中-公开
DimmbaresVorschaltgerätzur schrittweisen Regelung von Leuchtstofflampen
- 专利标题： Stepped dimming ballast for fluorescent lamps
- 专利标题（中）： DimmbaresVorschaltgerätzur schrittweisen Regelung von Leuchtstofflampen
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申请号： EP06252596.9申请日： 2006-05-18
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公开(公告)号： EP1725085A1公开(公告)日： 2006-11-22
- 发明人: Foo, Onn Fah
- 申请人： Mass Technology (H.K.) Ltd.
- 申请人地址： Room 2902-6, Tower 6, The Gateway, 9 Canton Road Tsimshatsui, Kowloon, Hong Kong CN
- 专利权人： Mass Technology (H.K.) Ltd.
- 当前专利权人： Mass Technology (H.K.) Ltd.
- 当前专利权人地址： Room 2902-6, Tower 6, The Gateway, 9 Canton Road Tsimshatsui, Kowloon, Hong Kong CN
- 代理机构： Prentice, Raymond Roy
- 优先权： CN200510072474 20050520
- 主分类号： H05B41/392
- IPC分类号： H05B41/392
摘要：
A stepped dimming ballast comprising a filter and rectifier circuit (1), a DC high voltage stabilizing circuit (2), a frequency control and switch circuit (3), a load current feedback circuit (5), a voltage signal processing circuit (6) and a voltage signal sampling circuit (7). The present invention is adapted for use in conjunction with a silicon controlled rectifier dimmer and/or a regular light switch whereby it is novel in structure and able to effect dimming in two predetermined and reliable operation modes.
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