发明名称 |
Apparatus and method for providing dimming control of lamps and electrical lighting systems |
摘要 |
<p>Dimming of an electrical lamp of the type driven by a ballast is provided by a reactive power device in series between the AC supply and the ballast. The reactive power device provides a variable auxiliary voltage out of phase by 90 or 270 degrees with the current such that a smaller magnitude voltage is applied to the lamp. The dimming device has a switch to enable/disable dimming. When the switch is enabled, the voltage applied to the lamp is controlled by a half-bridge inverter with a pair of totem pole power electronic switches, along with a pair of DC series capacitors and a low-pass filter.</p> |
申请公布号 |
GB2405540(B) |
申请公布日期 |
2006.05.10 |
申请号 |
GB20030020067 |
申请日期 |
2003.08.27 |
申请人 |
RON SHU-YUEN HUI;HENRY SHU HUNG CHUNG;E.ENERGY DOUBLE TREE LIMITED |
发明人 |
HENRY SHU HUNG CHUNG;NGAI MAN HO;RON SHU-YUEN HUI |
分类号 |
H05B41/392;H05B37/02;H05B41/39 |
主分类号 |
H05B41/392 |
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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