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233 条记录 (耗时 0.022 秒)

    Reverse current detector circuit
    5.
    发明授权
    Reverse current detector circuit 有权
    反向电流检测电路

    公开(公告)号：US09535101B2

    公开(公告)日：2017-01-03

    申请号：US14552724

    申请日：2014-11-25

    申请人： EM Microelectronic-Marin SA

    发明人： Petr Drechsler ,  Yves Theoduloz

    IPC分类号： H02H3/18 ,  G01R19/14 ,  H02M3/158 ,  G01R19/00 ,  H02H7/12

    CPC分类号： G01R19/14 ,  G01R19/0092 ,  H02H3/18 ,  H02H7/1213 ,  H02M3/158

    摘要： A circuit (1) is described for detecting a reverse current condition of a DCDC converter (2). This circuit uses a simple logic gate such as an AND gate to sense the voltage on a determined node (7) of the DCDC converter, and the propagation of the gated signal (27) is controlled using the timing control signals SW1 and SW2 of the DCDC converter, together with delay cells (16 and 17), to ensure that the positive or negative state of the sensed voltage at said node (7) is propagated cleanly through the logic gate (18), the flip-flop or latch circuit (19) and the up-down counter (29) to the output timing control circuit (25). The up-down counter is incremented or decremented in dependence on the presence or absence of a reverse current condition at said node, and the count value (24) of the up-down counter determines the duration of the on-period of the second-phase timing control signal SW2.

    摘要翻译： 描述了用于检测DCDC转换器（2）的反向电流状态的电路（1）。 该电路使用诸如与门的简单逻辑门来感测DCDC转换器的确定节点（7）上的电压，并且使用定时控制信号SW1和SW2来控制门控信号（27）的传播 DCDC转换器与延迟单元（16和17）一起确保所述节点（7）处感测到的电压的正或负状态通过逻辑门（18），触发器或锁存电路（ 19）和升降计数器（29）输出到输出定时控制电路（25）。 升降计数器根据所述节点处的反向电流状况的存在或不存在而递增或递减，并且上下计数器的计数值（24）确定第二级计数器的导通周期的持续时间， 相位定时控制信号SW2。

    Polarity sensing circuit
    6.
    发明授权
    Polarity sensing circuit 有权
    极性检测电路

    公开(公告)号：US09506955B2

    公开(公告)日：2016-11-29

    申请号：US13932678

    申请日：2013-07-01

    申请人： Apple Inc.

    发明人： Todd K. Moyer

    IPC分类号： G01R19/14

    CPC分类号： G01R19/14

    摘要： A dc input circuit receives a dc input voltage. At least four rectification elements are coupled to each other in a diode bridge configuration, where an input of the diode bridge configuration is coupled to the dc input circuit to receive the dc input voltage. At least one of the rectification elements includes a transistor. A decision circuit indicates, as a function of one of collector current and emitter current of the transistor, that the received dc input voltage has normal or reversed polarity. Other embodiments are also described and claimed.

    摘要翻译： 直流输入电路接收直流输入电压。 至少四个整流元件以二极管桥结构彼此耦合，其中二极管桥结构的输入耦合到直流输入电路以接收直流输入电压。 整流元件中的至少一个包括晶体管。 作为晶体管的集电极电流和发射极电流之一的判定电路表明接收到的直流输入电压具有正常或相反的极性。 还描述和要求保护其他实施例。

    Circuit that deciphers between AC and DC input signals
    7.
    发明授权
    Circuit that deciphers between AC and DC input signals 有权
    在交流和直流输入信号之间解密的电路

    公开(公告)号：US09410993B2

    公开(公告)日：2016-08-09

    申请号：US14317325

    申请日：2014-06-27

    申请人： ROCKWELL AUTOMATION TECHNOLOGIES, INC.

    发明人： Dale R. Terdan ,  Sean P. Overberger

    IPC分类号： G01R19/14 ,  H02J5/00 ,  H05B37/02 ,  G01R19/00 ,  H02M1/10 ,  G01R19/155

    CPC分类号： G01R19/14 ,  G01R19/0015 ,  G01R19/155 ,  H02M1/10 ,  H05B37/02 ,  Y10T307/658

    摘要： Aspects of the present invention provide a module including an electronic circuit that flags the presence of AC or DC input signals. An AC filter receives an input signal and couples it to a first leg. The AC filter permits an AC signal to pass to produce a first output and prevents a DC signal from passing. A DC filter also receives the input signal and couples it to a second leg. The DC filter permits a DC signal to pass to produce a second output and prevents at least part of an AC signal from passing. A lock out circuit in the first leg prevents the second leg from producing the second output when the first leg produces the first output. The output of each leg may be digitized and coupled to a logic controller to flag the presence of AC or DC input signals.

    摘要翻译： 本发明的方面提供了一种模块，其包括标记AC或DC输入信号的存在的电子电路。 AC滤波器接收输入信号并将其耦合到第一支路。 交流滤波器允许AC信号通过以产生第一输出并且防止DC信号通过。 DC滤波器还接收输入信号并将其耦合到第二支路。 DC滤波器允许DC信号通过以产生第二输出并且防止AC信号的至少一部分通过。 当第一腿产生第一输出时，第一腿中的锁定电路防止第二腿产生第二输出。 每个支路的输出可以被数字化并且耦合到逻辑控制器以标记AC或DC输入信号的存在。

    Loudspeaker polarity detector
    8.
    发明授权
    Loudspeaker polarity detector 有权
    扬声器极性检测器

    公开(公告)号：US09357322B2

    公开(公告)日：2016-05-31

    申请号：US14508569

    申请日：2014-10-07

    申请人： NXP B.V.

    发明人： Temujin Gautama

    IPC分类号： H04R29/00 ,  G01R19/00 ,  G01R27/02 ,  H04R5/04 ,  G01R19/14

    CPC分类号： H04R29/001 ,  G01R19/14 ,  H04R5/04

    摘要： A method comprising the steps of:determining one or more impedance values of a loudspeaker; anddetermining the polarity of a loudspeaker based on the one or more impedance values.

    摘要翻译： 一种方法，包括以下步骤：确定扬声器的一个或多个阻抗值; 以及基于所述一个或多个阻抗值确定扬声器的极性。

    Bi-directional input, bi-directional output, lossless current sensing scheme with temperature compensation
    9.
    发明授权
    Bi-directional input, bi-directional output, lossless current sensing scheme with temperature compensation 有权
    双向输入，双向输出，带温度补偿的无损耗电流检测方案

    公开(公告)号：US09194893B2

    公开(公告)日：2015-11-24

    申请号：US13990377

    申请日：2013-02-07

    申请人： TEXAS INSTRUMENTS INCORPORATED

    发明人： Yew Tat Chuah ,  Zhao Tang ,  Wei Lu

    IPC分类号： G01R19/00 ,  G01R19/32 ,  G01R19/10 ,  G01R19/14 ,  G01R19/04

    CPC分类号： G01R19/32 ,  G01R19/0046 ,  G01R19/0092 ,  G01R19/04 ,  G01R19/10 ,  G01R19/14

    摘要： A sensing circuit for a power FET. A first sensing FET senses current flow from load to ground. A second sensing FET senses current flow from ground to load. The current flows are converted to voltages, then added to generate a sensed output voltage. The specific amplitude of the sensed output voltage indicates the direction of the current flow. Resistive elements used to convert currents to voltages are configured as pairs of resistors having temperature coefficients of opposite polarity in order to compensate for temperature effects in the sensing circuit.

    摘要翻译： 用于功率FET的检测电路。 第一感测FET感测从负载到地的电流。 第二感测FET感测从地面到负载的电流。 电流被转换成电压，然后被加到以产生检测的输出电压。 感测的输出电压的具体幅度表示电流的方向。 用于将电流转换为电压的电阻元件被配置为具有相反极性的温度系数的电阻器对，以便补偿感测电路中的温度影响。

    METHOD AND DEVICE FOR DETERMINING DIRECTION OF CURRENT FLOWING THROUGH CIRCUIT BREAKER
    10.
    发明申请
    METHOD AND DEVICE FOR DETERMINING DIRECTION OF CURRENT FLOWING THROUGH CIRCUIT BREAKER 审中-公开
    用于确定通过断路器的电流流向的方法和装置

    公开(公告)号：US20140247528A1

    公开(公告)日：2014-09-04

    申请号：US14191729

    申请日：2014-02-27

    申请人： SIEMENS AKTIENGESELLSCHAFT

    发明人： Wei Gang CHEN ,  Feng DU ,  Yue ZHUO

    IPC分类号： H01H83/08 ,  G01R19/14

    CPC分类号： H01H83/08 ,  G01R19/14 ,  H02H7/28

    摘要： A method and device are disclosed for determining the direction of current flowing through a circuit breaker. An embodiment includes obtaining a sample value of current flowing through the circuit breaker and a differential value of current; obtaining a sample value of voltage at the circuit breaker; on the basis of a relationship between voltage and current in an equivalent circuit in which the circuit breaker lies at the present time and at a previous time, obtaining an equivalent resistance and an equivalent inductance in the equivalent circuit; if the equivalent resistance and equivalent inductance are both greater than zero, determining that the direction of current flowing through the circuit breaker is the same as the current reference direction, and if the equivalent resistance and equivalent inductance are both less than zero, determining that the direction of current flowing through the circuit breaker is opposite to the current reference direction.

    摘要翻译： 公开了一种用于确定流过断路器的电流的方向的方法和装置。 实施例包括获得流过断路器的电流的采样值和电流的微分值; 获得断路器电压的采样值; 基于断路器处于当前时间和之前时间的等效电路中的电压和电流之间的关系，获得等效电路中的等效电阻和等效电感; 如果等效电阻和等效电感都大于零，则确定流过断路器的电流方向与电流参考方向相同，如果等效电阻和等效电感都小于零，则确定 流过断路器的电流方向与电流参考方向相反。