发明名称 |
Device for operating a short arc discharge mercury lamp |
摘要 |
A short arc ultra-high pressure mercury lamp, at least one of the electrodes of which has a melted part towards the electrode head and a coil part which extends from the melted part continuously and integrally with it in a direction away from the electrode head, avoids blackening of the tube wall and achieves a long service life by the provision of a power supply which supplies the discharge lamp with direct current when operation is starting and afterwards supplies it with an alternating current, the direct current supplied by the power supply to the discharge lamp being initially 0.3 to 0.6 times as great as the rated current and afterwards increasing to 1.0 to 2.0 times are great as the rated current.
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申请公布号 |
US6960884(B2) |
申请公布日期 |
2005.11.01 |
申请号 |
US20040867774 |
申请日期 |
2004.06.16 |
申请人 |
USHIODENKI KABUSHIKI KAISHA |
发明人 |
ARIMOTO TOMOYOSHI;SUGAJA KATUMI;SUZUKI YOSHIKAZU |
分类号 |
H05B41/24;H01J61/073;H01J61/20;H01J61/26;H01J61/86;H05B41/18;H05B41/292;H05B41/38;(IPC1-7):H01J17/20;H05B37/02;H01J17/20 |
主分类号 |
H05B41/24 |
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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