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    • 1. 发明申请
    • CONTROL CIRCUIT FOR LIGHT EMITTING DEVICE
    • 用于发光装置的控制电路
    • US20100259181A1
    • 2010-10-14
    • US12757197
    • 2010-04-09
    • Yoshio FUJIMURAYusuke NISHIZAKISatoru YOSHIOKA
    • Yoshio FUJIMURAYusuke NISHIZAKISatoru YOSHIOKA
    • H05B37/02
    • H05B33/0815H05B33/0851
    • 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.
    • 一种控制电路,包括用于在AC电源上进行全波整流的整流单元,用于切换流过发光器件的电流的开关元件,所述发光器件响应于在整流器单元中全波整流的电压而发光; 分压电路,用于对在整流单元中进行全波整流的电压进行分压,得到基准电压Vref,将与流过发光元件的电流对应的比较电压Vcmp与参考电压Vref进行比较的比较器, 基于比较器中获得的比较结果来控制开关元件的开关的单元。