发明名称 HID BALLAST
摘要 <p>A method and apparatus are disclosed for providing current to a load. The apparatus includes a full or half bridge switching circuit, including at least one switching element for supplying power to a load when switched on and means for switching a state of the switching element only at a time when a substantially zero voltage is applied across the switching element.</p>
申请公布号 EP1829434(A1) 申请公布日期 2007.09.05
申请号 EP20050818367 申请日期 2005.12.02
申请人 HARVARD ENGINEERING PLC 发明人 SMETHURST, CHRISTOPHER JOHN
分类号 H05B41/288 主分类号 H05B41/288
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