发明名称 |
Method and circuit arrangement for operating a discharge lamp |
摘要 |
A method and a circuit arrangement for operating a discharge lamp, in particular during the first hours of operation after lamp manufacture, are described. The method and the circuit arrangement are provided in particular for high-pressure gas discharge lamps (HID or high intensity discharge lamps or UHP or ultra high performance lamps). Furthermore, a lighting unit with a discharge lamp and such a circuit arrangement and a projection system with a projection display and such a lighting unit are described. Switching-over between various modes of operation with different operating frequencies serves to avoid that the burning voltage of the lamp drops into a region of a minimum voltage of a lamp driver unit below which the latter can no longer drive the lamp with its rated power or a desired power.
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申请公布号 |
US7619369(B2) |
申请公布日期 |
2009.11.17 |
申请号 |
US20040596474 |
申请日期 |
2004.12.16 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
PEKARSKI PAVEL;STOFFELS JAN ALFONS JULIA;MOENCH HOLGER |
分类号 |
H05B37/02;H01J61/073;H01J61/86;H05B41/292 |
主分类号 |
H05B37/02 |
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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