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    • 53. 发明公开
    • SMOKE SENSOR
    • 烟雾传感器
    • EP2273466A1
    • 2011-01-12
    • EP09736033.3
    • 2009-04-21
    • Panasonic Electric Works Co., Ltd
    • FUKUI, SuguruHATATANI, Teruki
    • G08B17/107G05F1/10H03F3/08
    • G08B29/24G01N21/4738G01N21/53G08B17/103G08B17/107G08B17/113H03F3/087
    • A current-voltage converting circuit (2) is provided with a first feedback circuit (5) and a correcting transistor (Q1). The first feedback circuit (5) outputs, of an output voltage (V10), a voltage according to a magnitude of a low-frequency component that is not greater than or equal to a predefined first cut-off frequency. The correcting transistor (Q1) extracts a correction current (I21) according to a magnitude of an output of the first feedback circuit (5) from a sensor current (110). The first feedback circuit (5) has a first integrating circuit (9) and a sample-and-hold circuit (10). The first integrating circuit (9) integrates the output voltage (V10) of a conversion section (3). The sample-and-hold circuit (10) samples and holds an output of the first integrating circuit (9) during a sensing period at which a pulsed detection signal is inputted. Means for preventing an incidence of ambient light onto a light-receiving section can be simplified or omitted as a result.
    • 电流 - 电压转换电路(2)设置有第一反馈电路(5)和校正晶体管(Q1)。 第一反馈电路(5)输出与输出电压(V10)相应的不大于或等于预定义的第一截止频率的低频分量的大小的电压。 校正晶体管(Q1)根据来自传感器电流(110)的第一反馈电路(5)的输出的大小来提取校正电流(I21)。 第一反馈电路(5)具有第一积分电路(9)和采样保持电路(10)。 第一积分电路(9)对转换部分(3)的输出电压(V10)进行积分。 采样和保持电路(10)在输入脉冲检测信号的感测周期期间采样和保持第一积分电路(9)的输出。 结果,可以简化或省略用于防止环境光入射到光接收部分上的手段。
    • 56. 发明公开
    • Motor controller
    • 电机控制器
    • EP2164166A1
    • 2010-03-17
    • EP09010349.0
    • 2009-08-11
    • Alps Electric Co., Ltd.
    • Shigeru, FurukiNoriyuki, Fukushima
    • H02P7/28H02P7/29G05F1/10H02M1/08
    • H02P7/28H02P7/29
    • A motor controller includes a motor drive circuit and a control circuit. The control circuit outputs a drive signal having a pulse width, which indicates a period of time where the drive state of the motor is kept, to the motor drive circuit on the basis of an instruction value of torque generated in the motor. The control circuit sets the maximum value of drive current supplied to the motor. The control circuit has a constant-current control phase where the pulse width of the drive signal is defined as a period of time between the time when power begins to be supplied to the motor and the time when a value of actual drive current reaches the maximum value, and a constant-voltage control phase where the pulse width of the drive signal is defined to be equal to the pulse width of a modulated instruction value while the actual drive current of the motor does not reach the maximum value.
    • 电机控制器包括电机驱动电路和控制电路。 控制电路基于电动机中产生的转矩的指令值,将具有指示保持电动机的驱动状态的时间段的脉冲宽度的驱动信号输出到电动机驱动电路。 控制电路设定提供给电机的驱动电流的最大值。 控制电路具有恒定电流控制阶段,其中驱动信号的脉冲宽度被定义为电力开始被供应到电动机的时间与实际驱动电流的值达到最大值的时间之间的时间段 值,以及恒定电压控制阶段,其中驱动信号的脉冲宽度被定义为等于调制指令值的脉冲宽度,而电动机的实际驱动电流未达到最大值。
    • 59. 发明公开
    • THREE-PHASE LOW NOISE CHARGE PUMP AND METHOD
    • 低噪声三相电荷泵和方法
    • EP2036194A2
    • 2009-03-18
    • EP06802863.8
    • 2006-09-01
    • Texas Instruments Incorporated
    • ALENIN, Sergey
    • H02M7/25G05F1/10
    • H02M3/07H02M2003/077
    • A low noise charge pump circuit includes a first terminal (8) of a first flying capacitor (Cl) selectively coupled to a first voltage (VCC) during a first recharging phase and a second terminal (7) of the first flying capacitor selectively coupled to a second voltage (GND) during the first recharging phase. The second terminal of the first flying capacitor is coupled to a precharge control circuit (25, 27) during a first parasitic capacitance precharging phase that occurs after the first recharging phase to cause the voltage of the first terminal of the first flying capacitor to equal an output voltage (Vout). The first terminal of the first flying capacitor is coupled to an output conductor (10) conducting the output voltage during a first discharging phase that occurs after the first parasitic capacitance precharging phase. The second terminal of the first flying capacitor is coupled to a discharge control circuit (2, 4) which increases the voltage of the second terminal of the first flying capacitor during the first discharging phase until the output voltage is equal to a regulated value.