Light-emitting device control circuit
    10.
    发明授权
    Light-emitting device control circuit 有权
    发光装置控制电路

    公开(公告)号:US09125265B2

    公开(公告)日:2015-09-01

    申请号:US13569945

    申请日:2012-08-08

    IPC分类号: H05B33/08 H05B37/02

    CPC分类号: H05B33/0818 H05B33/0851

    摘要: In a control circuit for a light-emitting device, a reference voltage generation circuit detects a full-wave rectified voltage and generates a first voltage as well as generating a second voltage by converting the rectified voltage into a DC voltage. A voltage corresponding to a difference between the first voltage and the second voltage or a voltage corresponding to a ratio of the first voltage to the second voltage is generated as a reference voltage by a subtraction circuit or by a division circuit, respectively. As a result, a change in amplitude of the reference voltage can be suppressed when amplitude of the rectified voltage is varied due to a variation in an AC input voltage supplied from an AC power supply.

    摘要翻译: 在发光装置的控制电路中,参考电压产生电路检测全波整流电压,并通过将整流电压转换成直流电压来产生第一电压以及产生第二电压。 相应于第一电压和第二电压之间的差的电压或对应于第一电压与第二电压的比率的电压分别由减法电路或分频电路产生作为参考电压。 结果,由于由交流电源供给的交流输入电压的变化,整流电压的振幅变化,可以抑制基准电压的振幅的变化。