MAGNETIC SENSOR CIRCUIT
    2.
    发明申请

    公开(公告)号:US20190025384A1

    公开(公告)日:2019-01-24

    申请号:US16032352

    申请日:2018-07-11

    申请人: ABLIC Inc.

    发明人: Masao IRIGUCHI

    摘要: A magnetic sensor circuit includes a first type electromagnetic conversion element which supplies antiphase signals corresponding to the intensity of a magnetic field in a first direction, a second type electromagnetic conversion element which supplies antiphase signals corresponding to the intensity of a magnetic field in a second direction, a switch circuit which controls a current supplied from a current source to the first and the second type electromagnetic conversion elements, and a common mode feedback circuit which determines a midpoint voltage between the first and the second type electromagnetic conversion elements. The common mode feedback circuit performs a feedback operation to thereby set an output common voltage of the first type electromagnetic conversion element higher than the preset reference voltage and set an output common voltage of the second type electromagnetic conversion element lower than the preset reference voltage.

    High-speed, low drift, precision peak detection circuit and systems

    公开(公告)号:US10073123B1

    公开(公告)日:2018-09-11

    申请号:US15335093

    申请日:2016-10-26

    发明人: Xiao Yu Miao

    摘要: Systems and techniques relating to voltage signal peak level detection used in sensor devices, namely in Fly-Height Sensors (FHS) devices include, according to an aspect, an integrated chip device comprising: peak detection circuitry configured to receive a voltage signal and output a peak voltage signal associated with a peak voltage level of the voltage signal, wherein the peak detection circuitry comprises: a linear loop section configured to store the peak voltage level and hold additional voltage levels of the voltage signal at an output terminal of an amplifier to a value greater than zero; and a feedback loop section configured to reduce a leakage current within the peak detection circuitry and generate a guard voltage signal usable to reduce a feedback voltage and prevent the feedback voltage from successively re-entering into the feedback loop section.

    Magnetic field detection sensor
    7.
    发明授权

    公开(公告)号:US09791522B2

    公开(公告)日:2017-10-17

    申请号:US15144019

    申请日:2016-05-02

    摘要: A magnetic field detection sensor includes a magneto-impedance element configured to make use of the magneto-impedance effect, and a negative-feedback bias coil configured to apply a bias magnetic field to the magneto-impedance element. The magnetic field detection sensor is configured to detect an external magnetic field based on an output obtained by applying an alternating-current to the magneto-impedance element. The magneto-impedance element includes a non-magnetic substrate, and a magnetic thin-film that is provided on a surface of the non-magnetic substrate. The magnetic field detecting direction matches the longitudinal direction of the magneto-impedance element, and the magnetic thin-film is configured to have a magnetic anisotropy such that a direction of an axis of easy magnetization thereof matches the magnetic field detecting direction.

    MAGNETIC FIELD SENSOR FOR ANGLE DETECTION WITH A PHASE-LOCKED LOOP
    9.
    发明申请
    MAGNETIC FIELD SENSOR FOR ANGLE DETECTION WITH A PHASE-LOCKED LOOP 审中-公开
    用于具有相位锁定环的角度检测的磁场传感器

    公开(公告)号:US20160363638A1

    公开(公告)日:2016-12-15

    申请号:US14737739

    申请日:2015-06-12

    发明人: Steven Daubert

    IPC分类号: G01R33/07

    摘要: A magnetic field sensor includes a phase-locked loop to receive a measured magnetic field signal formed from sensing element output signals of a plurality of magnetic field sensing elements in response to a magnetic field. The phase-locked loop is configured to generate an angle signal having a value indicative of the angle of the magnetic field. Associated methods are also described.

    摘要翻译: 磁场传感器包括锁相环,用于接收由多个磁场感测元件响应于磁场的感测元件输出信号形成的测量的磁场信号。 锁相环被配置为产生具有指示磁场角度的值的角度信号。 还描述了相关方法。

    Electrical current sensor
    10.
    发明授权
    Electrical current sensor 有权
    电流传感器

    公开(公告)号:US09207288B2

    公开(公告)日:2015-12-08

    申请号:US13719067

    申请日:2012-12-18

    IPC分类号: G01R33/00 G01R33/02 G01R15/20

    摘要: An electrical current sensor includes a magnetic detection element whose characteristics are changed by an inductive magnetic field from a current to be measured, a plurality of coils that are connected in series with each other and which are arranged in the vicinity of the magnetic detection element, and generates a canceling magnetic field for canceling the inductive magnetic field by a feedback current flowing in the coils, and a switch circuit that selects a coil electrically connected with an input terminal and/or an output terminal of the feedback current from the plurality of coils, and controls a coil for allowing the feedback current to flow.

    摘要翻译: 电流传感器包括其特性通过来自待测电流的感应磁场而变化的磁检测元件,彼此串联连接并布置在磁检测元件附近的多个线圈, 并产生用于通过在线圈中流动的反馈电流来消除感应磁场的消除磁场;以及开关电路,其选择与来自多个线圈的反馈电流的输入端子和/或输出端子电连接的线圈 并且控制用于允许反馈电流流动的线圈。