发明名称 |
DISCHARGE LAMP LIGHTING CIRCUIT WITH PROTECTION CIRCUIT |
摘要 |
A discharge lamp lighting circuit includes an open-circuit protection means to protect a driving means when a discharge lamp is not lighted. The open-circuit protection means is adapted to send out to a control means a signal for limiting a current flowing in the driving means to or below a predetermined value when the tube current is equal to or lower than a first value predetermined, and a signal for sequentially increasing a current flowing in the driving means up to a rated current when the tube current is higher than the first value and also is equal to or lower than a second value predetermined, and to stop a driving signal sent from the control means when a tube current flowing in the discharge lamp has a value equal to or lower than the first value after a predetermined time.
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申请公布号 |
US2004051476(A1) |
申请公布日期 |
2004.03.18 |
申请号 |
US20030400431 |
申请日期 |
2003.03.28 |
申请人 |
MINEBEA CO., LTD. |
发明人 |
TERADA RYU;KAMIMURA SHUNSUKE;SUZUKI SHINICHI |
分类号 |
H05B41/24;H05B41/285;(IPC1-7):G05F1/00 |
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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