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74 条记录 (耗时 0.039 秒)

    Package for a magnetic field sensing device
    43.
    发明授权
    Package for a magnetic field sensing device 失效
    用于磁场感测装置的封装

    公开(公告)号：US5963028A

    公开(公告)日：1999-10-05

    申请号：US916746

    申请日：1997-08-19

    申请人： Raymond W Engel ,  Ravi Vig ,  Jay Gagnon J Gagnon

    发明人： Raymond W Engel ,  Ravi Vig ,  Jay Gagnon J Gagnon

    IPC分类号： G01D5/245 ,  G01R33/07 ,  G01V3/08 ,  G01R33/06 ,  G01P3/488 ,  H01L43/00

    CPC分类号： G01R33/07 ,  G01V3/08 ,  Y10T29/49007

    摘要： A magnetic field sensor assembly has a magnet, a semiconductor sensor and a metal leadframe encapsulated in a plastic package to form a semiconductor integrated circuit. A metal leadframe has a die attach pad on which the sensor is secured and an assembly having one or more projections for securing the magnet in close proximity to the sensor. The leadframe is made from a metal having sufficient spring tension so that the assembly having the projections will secure the magnet. The sensor is adjacent to a ferromagnetic object and will detect a change in magnetic field caused by the ferromagnetic object. Only a thin layer of the plastic package covers the sensor thus reducing the distance between the sensor and the ferromagnetic object but still maintaining an air gap between the plastic package and the ferromagnetic object sufficient to allow passage of the ferromagnetic object.

    摘要翻译： 磁场传感器组件具有磁体，半导体传感器和封装在塑料封装中以形成半导体集成电路的金属引线框架。 金属引线框架具有芯片附接垫，传感器固定在该芯片附接垫上，以及具有一个或多个突起的组件，用于将磁体固定在传感器附近。 引线框架由具有足够的弹簧张力的金属制成，使得具有突起的组件将固定磁体。 传感器与铁磁物体相邻，并且将检测由铁磁物体引起的磁场变化。 只有塑料封装的薄层覆盖传感器，从而减小传感器和铁磁物体之间的距离，但仍然保持塑料封装和铁磁物体之间的空气间隙足以允许铁磁物体通过。

    Two terminal I.C. magnetic-field detector for use in a liquid level sensor and having an anti-slosh feature
    44.
    发明授权
    Two terminal I.C. magnetic-field detector for use in a liquid level sensor and having an anti-slosh feature 失效
    两个终端I.C. 磁场检测器，用于液位传感器并具有防晃动特征

    公开(公告)号：US5686894A

    公开(公告)日：1997-11-11

    申请号：US582570

    申请日：1996-01-03

    申请人： Ravi Vig ,  Teri Tu ,  Alberto Bilotti

    发明人： Ravi Vig ,  Teri Tu ,  Alberto Bilotti

    IPC分类号： G01D5/14 ,  G01F23/74 ,  H03K17/95 ,  H01H35/18 ,  G01F23/36

    CPC分类号： G01D5/145 ,  G01F23/74 ,  H03K17/9517

    摘要： A two-terminal integrated circuit magnetic-field detector, for use in detecting a low level of a liquid in a vehicle, has a Hall element, a Schmitt type comparator, an anti-sloshing accumulator such as an up-down counter, and a latching driver all connected in tandem. The anti-sloshing accumulator is for producing a signal that is the integral as a function of time of the binary comparator output signal. During sloshing, when the average liquid level is near that at which a low-level warning signal is desired, the accumulator signal climbs in a vacillating manner. The latching driver is connected across the two integrated circuit (I.C.) terminals and latches on when the accumulator signal reaches a predetermined value, dropping the impedance across the two I.C terminals. A liquid level indicating lamp is connected in series with a source of DC voltage and the two I.C. terminals, so that when the average position of the floating magnet approaches that of the I.C. detector, the driver latches on and the low-level indicating lamp is also turned on and cannot be turned off except by removing the DC energizing voltage. The accumulator may be an up-down counter with means for preventing counting in the over-flow mode, and also for preventing counting in an under-flow mode, namely downward counting below zero count.

    摘要翻译： 用于检测车辆中的低液位的二端集成电路磁场检测器具有霍尔元件，施密特型比较器，防倒荡蓄能器，例如升降计数器，以及 锁存驱动器全部串联连接。 抗晃动累加器用于产生作为二进制比较器输出信号的时间的函数的积分的信号。 在晃荡期间，当平均液位接近需要低电平警告信号时，累加器信号以一种摇摆的方式爬升。 当累加器信号达到预定值时，锁存驱动器连接在两个集成电路（I.C.）端子和锁存器上，从而使两个IC端子之间的阻抗降低。 液位指示灯与直流电压源串联连接。 使得当浮动磁体的平均位置接近于I.C.的平均位置时。 检测器，驱动器锁存，低电平指示灯也被打开，除去除去直流通电电压外，不能关闭。 累加器可以是具有用于防止过流模式中的计数的装置的上下计数器，并且还用于防止在欠流模式下的计数，即向下计数低于零计数。

    Integrated voltage regulator circuit with transient voltage protection
    45.
    发明授权
    Integrated voltage regulator circuit with transient voltage protection 失效
    具有瞬态电压保护的集成稳压电路

    公开(公告)号：US4751463A

    公开(公告)日：1988-06-14

    申请号：US56167

    申请日：1987-06-01

    申请人： Jacob K. Higgs ,  Hideki Kawaji ,  Ravi Vig

    发明人： Jacob K. Higgs ,  Hideki Kawaji ,  Ravi Vig

    IPC分类号： G05F3/26

    CPC分类号： G05F3/265

    摘要： An integrated circuit voltage regulator is of the kind having a pass transistor connected collector-to-emitter between the input V.sub.CC conductor and the regulated-voltage output conductor, a current source circuit supplying a base bias current to the pass transistor and a voltage reference and feedback regulator circuit connected between the output voltage conductor and the base of the pass transistor. A protective circuit against high voltage transients adding to V.sub.CC voltage comprises a transistor connected collector-to-emitter between the pass-transistor base and ground has a resistor paralleling the base-emitter junction, which resistor is resistively coupled to the input V.sub.CC line to shunt away the pass-transistor bias current whenever the V.sub.CC voltage level exceeds a value just under the latch-back breakdown voltage of the pass transistor. A zener diode directly connected across the DC input voltage conduction renders the regulator even more tolerant of high voltage transients.

    摘要翻译： 集成电路电压调节器是在输入VCC导体和调节电压输出导体之间具有集电极到发射极的通过晶体管的类型，向传输晶体管提供基极偏置电流的电流源电路和电压基准， 反馈调节器电路连接在输出电压导体和传输晶体管的基极之间。 一个保护电路可以防止高电压瞬变增加VCC电压，包括在通过晶体管基极和地之间的集电极到发射极之间的晶体管连接有一个与基极 - 发射极并联的电阻，该电阻电阻耦合到输入VCC线分流 每当VCC电压电平超过传输晶体管的闭锁回击击穿电压以下的值时，传送晶体管偏置电流。 直流输入电压直接连接的齐纳二极管使调节器更容忍高电压瞬变。

    Magnetic Field Sensor and Method Used in a Magnetic Field Sensor that Adjusts a Sensitivity and/or an Offset Over Temperature
    48.
    发明申请
    Magnetic Field Sensor and Method Used in a Magnetic Field Sensor that Adjusts a Sensitivity and/or an Offset Over Temperature 有权
    用于磁场传感器的磁场传感器和方法，用于调节温度下的灵敏度和/或偏移

    公开(公告)号：US20120086442A1

    公开(公告)日：2012-04-12

    申请号：US12902410

    申请日：2010-10-12

    申请人： David J. Haas ,  Ravi Vig

    发明人： David J. Haas ,  Ravi Vig

    IPC分类号： G01R33/02

    CPC分类号： G01R33/02 ,  G01R33/0029 ,  G01R33/0041 ,  G01R33/072

    摘要： A magnetic field sensor and a method associated with the magnetic field sensor provide gain correction coefficients and/or offset correction coefficients stored in the magnetic field sensor in digital form. The gain correction coefficients and/or offset correction coefficients can be used to generate analog control signals to control a sensitivity and/or an offset of an analog signal path through the magnetic field sensor.

    摘要翻译： 磁场传感器和与磁场传感器相关联的方法以数字形式提供存储在磁场传感器中的增益校正系数和/或偏移校正系数。 增益校正系数和/或偏移校正系数可用于产生模拟控制信号以控制通过磁场传感器的模拟信号路径的灵敏度和/或偏移。

    Circuit combining a switching regulator and an overvoltage detection circuit
    50.
    发明授权
    Circuit combining a switching regulator and an overvoltage detection circuit 有权
    组合开关稳压器和过压检测电路的电路

    公开(公告)号：US07834603B2

    公开(公告)日：2010-11-16

    申请号：US12124752

    申请日：2008-05-21

    申请人： Vijay Mangtani ,  Weiyun Chen ,  Ravi Vig

    发明人： Vijay Mangtani ,  Weiyun Chen ,  Ravi Vig

    IPC分类号： G05F1/10 ,  G05F1/656 ,  G05F1/652

    CPC分类号： G05F1/565 ,  H02M1/32 ,  H02M3/158

    摘要： An electronic circuit combines a synchronous switching regulator circuit with an overvoltage detection circuit. The overvoltage detection circuit is configured to generate an overvoltage signal capable of an overvoltage state indicative of a power supply voltage being above a predetermined threshold voltage. The switching regulator circuit is coupled to receive the overvoltage signal. The switching regulator is also configured, in response to the overvoltage signal being in the overvoltage state, to generate a first control signal resulting in at least one of two series coupled transistors being in an off condition.

    摘要翻译： 电子电路将同步开关调节器电路与过电压检测电路相结合。 过电压检测电路被配置为产生能够表示电源电压高于预定阈值电压的过电压状态的过电压信号。 开关稳压器电路被耦合以接收过电压信号。 开关调节器还被配置为响应于过电压信号处于过电压状态，以产生第一控制信号，导致两个串联耦合晶体管中的至少一个处于关断状态。