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    • 4. 发明授权
    • Power factor correction boost converter with continuous, discontinuous, or critical mode selection
    • 具有连续,不连续或临界模式选择的功率因数校正升压转换器
    • US07733678B1
    • 2010-06-08
    • US11849158
    • 2007-08-31
    • Hubertus NotohamiprodjoJianqing Lin
    • Hubertus NotohamiprodjoJianqing Lin
    • G05F1/70
    • H02M1/4225Y02B70/126Y10S323/901
    • In a method and apparatus for controlling power factor correction in mixed operation modes, a frequency of the input voltage is obtained by detecting the zero crossing points of the input voltage. A peak of the input voltage is obtained by detecting input voltage with 90 degree phase. Thus, the present invention predicts the input voltage by its frequency and peak and the characteristic of the sine wave. A digital signal processor computes the duty and frequency of a boost switch, switching the operation mode of the boost converter among continuous mode, critical mode and discontinuous mode according to input voltage or the load. According to another aspect, the operation is switched to critical mode from the average current mode when a zero current is detected before the charging and recharging cycle of the boost switch is finished. Overcurrent protection may be achieved by controlling current in response to detected voltage to provide a substantially constant power level. The overcurrent protection may be adaptive in nature.
    • 在混合动作模式中的功率因数校正控制方法和装置中,通过检测输入电压的过零点来获得输入电压的频率。 通过检测90度相位的输入电压可以获得输入电压的峰值。 因此,本发明通过其频率和峰值以及正弦波的特性来预测输入电压。 数字信号处理器计算升压开关的占空比和频率,根据输入电压或负载将升压转换器的工作模式切换到连续模式,临界模式和不连续模式。 根据另一方面,当在升压开关的充电和再充电循环完成之前检测到零电流时,操作从平均电流模式切换到临界模式。 过电流保护可以通过响应于检测到的电压来控制电流来实现,以提供基本上恒定的功率电平。 过电流保护本质上可能是适应性的。
    • 6. 发明授权
    • Identifying a fluorescent lamp among multiple fluorescent lamps
    • 识别多个荧光灯之间的荧光灯
    • US08193814B2
    • 2012-06-05
    • US12249647
    • 2008-10-10
    • Hubertus NotohamiprodjoRadu Pitigoi-Aron
    • Hubertus NotohamiprodjoRadu Pitigoi-Aron
    • G01R31/00H05B39/04
    • G01R19/25H05B41/2828H05B41/3927
    • Methods to identify a fluorescent lamp among multiple fluorescent lamps include: receiving input to a circuit including multiple fluorescent lamps operated by corresponding multiple control signals, each fluorescent lamp configured to output radio frequency (RF) signals in response to receiving a detection signal, the input to identify which first control signal is provided to a first fluorescent lamp; in response to receiving the input, providing a first discovery signal in place of each control signal provided to each fluorescent lamp, one fluorescent lamp at a time; determining that the first fluorescent lamp outputs RF signals; and identifying the control signal that was replaced with the detection signal that caused the first fluorescent lamp to output the RF signals.
    • 在多个荧光灯中识别荧光灯的方法包括:接收包括由相应的多个控制信号操作的多个荧光灯的电路的输入,每个荧光灯被配置为响应于接收检测信号而输出射频(RF)信号,输入 识别哪个第一控制信号被提供给第一荧光灯; 响应于接收到所述输入,提供代替提供给每个荧光灯的每个控制信号的第一发现信号,一次一个荧光灯; 确定第一荧光灯输出RF信号; 并且识别由引起第一荧光灯输出RF信号的检测信号替换的控制信号。