发明名称 |
High pressure discharge lamp lighting device and luminaire using same |
摘要 |
A high pressure discharge lamp lighting device includes a DC power source circuit; a power supply circuit for converting an output from the DC power source circuit into a square wave AC output to be supplied to a high pressure discharge lamp; a starting circuit for applying a high voltage output for lamp startup to the high pressure discharge lamp; a control circuit; and a half-wave discharge detection circuit for detecting a half-wave discharge. The detection circuit detects the half-wave discharge at an initial stage of the lamp startup and the control circuit controls the magnitude of a voltage of a square wave half period of one polarity having a load voltage of a larger magnitude and that of a square wave half period of the other polarity having a load voltage of a smaller magnitude to approximate to each other. |
申请公布号 |
US8115405(B2) |
申请公布日期 |
2012.02.14 |
申请号 |
US20090585773 |
申请日期 |
2009.09.24 |
申请人 |
YAMAHARA DAISUKE;MATSUZAKI NOBUTOSHI;KAMOI TAKESHI;NAGATA SATORU;KOMATSU NAOKI;KUMAGAI JUN;PANASONIC ELECTRIC WORKS CO., LTD. |
发明人 |
YAMAHARA DAISUKE;MATSUZAKI NOBUTOSHI;KAMOI TAKESHI;NAGATA SATORU;KOMATSU NAOKI;KUMAGAI JUN |
分类号 |
H05B37/00;H05B37/02;H05B39/00;H05B39/04;H05B41/14;H05B41/36;H05F1/00 |
主分类号 |
H05B37/00 |
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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