发明名称 |
HIGH PRESSURE DISCHARGE LAMP LIGHTING DEVICE AND ILLUMINATION INSTRUMENT |
摘要 |
In an event of switching a DC output voltage of a boost chopper circuit from a first DC output voltage to a second DC output voltage, a boost chopper control circuit operates a boost chopper circuit intermittently. Therefore, a stop period of the boost chopper circuit is shortened as compared with a case where the boost chopper control circuit does not operate the boost chopper circuit intermittently. As a result, it becomes possible to supply a control power also when the DC output voltage of the boost chopper circuit is switched at a starting time of a high pressure discharge lamp while avoiding size and cost increases of a power supply circuit that supplies the control power.
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申请公布号 |
US2011068714(A1) |
申请公布日期 |
2011.03.24 |
申请号 |
US20090994473 |
申请日期 |
2009.05.12 |
申请人 |
PANASONIC ELECTRIC WORKS CO., LTD. |
发明人 |
KOMATSU NAOKI;KUMAGAI JUN |
分类号 |
H05B41/36 |
主分类号 |
H05B41/36 |
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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