发明名称 |
CONTROL CIRCUIT FOR LIGHT EMITTING DEVICE |
摘要 |
A control circuit comprises a rectifier unit for performing full wave rectification on an AC power source, a switching element for switching a current flowing through a light emitting device which emits light in response to a voltage having been full wave rectified in the rectifier unit, a voltage dividing circuit for dividing the voltage having been full wave rectified in the rectifier unit to obtain a reference voltage Vref, a comparator for comparing a comparison voltage Vcmp corresponding to the current flowing through the light emitting device with the reference voltage Vref, and a control unit for controlling switching of the switching element based on a comparison result obtained in the comparator.
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申请公布号 |
US2010259181(A1) |
申请公布日期 |
2010.10.14 |
申请号 |
US20100757197 |
申请日期 |
2010.04.09 |
申请人 |
SANYO ELECTRIC CO., LTD.;SANYO SEMICONDUCTOR CO., LTD. |
发明人 |
FUJIMURA YOSHIO;NISHIZAKI YUSUKE;YOSHIOKA SATORU |
分类号 |
H05B37/02 |
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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