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    • 6. 发明申请
    • LIGHT EMITTING DIODE CIRCUIT
    • 发光二极管电路
    • US20100295460A1
    • 2010-11-25
    • US12604396
    • 2009-10-23
    • Ying-Chu LinHsin-Yi Chou
    • Ying-Chu LinHsin-Yi Chou
    • H05B37/02
    • H05B33/0812H05B33/089Y02B20/345
    • A light emitting diode (LED) circuit is provided. A light emitting diode (LED) circuit includes an alternating current (AC) source, a rectifier, a voltage-limiting circuit, and an LED module. The AC source provides an AC voltage, and the rectifier generates a first rectified voltage according to the AC voltage. An upper limit of the first rectified voltage is substantially restricted at a rated voltage by the voltage-limiting circuit, and the voltage-limiting circuit generates a second rectified voltage according to the first rectified voltage, in which the second rectified voltage is lower than the rated voltage. The LED module receives the second rectified voltage. Thereby, when the AC voltage is unstable, fluctuation of current flowing through the LED module can be substantially reduced.
    • 提供了一种发光二极管(LED)电路。 发光二极管(LED)电路包括交流(AC)源,整流器,限压电路和LED模块。 交流电源提供交流电压,整流器根据交流电压产生第一整流电压。 第一整流电压的上限被限压电路基本上限制在额定电压,并且限压电路根据第一整流电压产生第二整流电压,其中第二整流电压低于 额定电压。 LED模块接收第二整流电压。 由此,当交流电压不稳定时,能够大幅度地减少流过LED模块的电流的波动。