公开(公告)号：US10746778B2

公开(公告)日：2020-08-18

申请号：US16425449

申请日：2019-05-29

申请人： Texas Instruments Incorporated

发明人： Sudeep Banerji ,  Dattatreya Baragur Suryanarayana ,  Vikram Gakhar ,  Preetam Tadeparthy ,  Vikas Lakhanpal ,  Muthusubramanian Venkateswaran ,  Vishnuvardhan Reddy J

IPC分类号： H02M3/156 ,  G01R31/01 ,  G01R19/00 ,  H02M1/00 ,  G01R1/20 ,  H02M3/158

摘要： A current detection system includes an inductor and a detection circuit coupled across the inductor. The inductor is configured to receive an input signal that includes an input current and generate a voltage across the inductor. The current detection circuit includes a sensing network and a transconductance amplifier. The sensing network includes a capacitor and is configured to monitor a voltage across the inductor. The transconductance amplifier is configured to receive a differential voltage indicative of a voltage drop across the capacitor and output a differential output current proportional to the differential voltage.

公开(公告)号：US10677847B2

公开(公告)日：2020-06-09

申请号：US14768481

申请日：2014-01-30

申请人： Continental Automotive GmbH

发明人： Henryk Frenzel ,  Vinzenz Sauerer ,  Michael Weinacht ,  Christine Spörl ,  Manfred Frimberger ,  Wolfgang Weigert

IPC分类号： G01R31/364 ,  G01R31/374 ,  G01R31/3828 ,  G01R1/20

摘要： A current sensor device for measuring a current, in particular for measuring a battery current in motor vehicles. The device includes a clamping device for fixing the current sensor device to a maintaining body, an electric resistance element on which the current can be measured by means of a voltage, and an electric mass element by means of which the current sensor device can be electrically coupled to a zero potential. The clamping device, the resistance element and the mass element are integrally formed.

公开(公告)号：US20200101847A1

公开(公告)日：2020-04-02

申请号：US16144653

申请日：2018-09-27

申请人： Ford Global Technologies, LLC

发明人： Pompilian Tofilescu

IPC分类号： B60L3/00 ,  G01R31/02 ,  G01R31/00 ,  G01R19/165 ,  G01R1/20

摘要： Circuits and methods are disclosed for determining a ground path impedance difference in a vehicle having master and slave control. An example circuit for detecting a difference in ground path impedance in a vehicle includes a master ground terminal and a slave ground terminal. The circuit also includes a first shunt resistor electrically coupled between the master ground terminal and a common internal ground, and a second shunt resistor electrically coupled between the slave ground terminal and the common internal ground. The circuit further includes a bi-directional current sense amplifier having as inputs the master ground terminal and the slave ground terminal.

公开(公告)号：US10598821B2

公开(公告)日：2020-03-24

申请号：US15575760

申请日：2017-07-18

申请人： OMNI LPS. CO., LTD.

发明人： Young Ki Chung

IPC分类号： G01W1/16 ,  H01L31/08 ,  H02S20/20 ,  G01R29/08 ,  G01R1/20 ,  G08B21/10 ,  G08B21/18 ,  G08B25/08 ,  G01R31/12

摘要： A lightning strike alarm system using a Bipolar Conventional Air Terminal (BCAT) is provided. The lightning strike alarm system using BCAT including a rod element to which a ground charge is electrified and an electrification plate-cone or an electrification plate-tube electrified by a thunderstorm cloud, includes a luminescence unit to be electrically connected to the rod element and the electrification plate-cone or the electrification plate-tube and emits light by electric energy electrified to the electrification plate-cone or the electrification plate-tube by the thunderstorm cloud. The lightning strike alarm system enables a user to find that an impulse current of the thunderstorm is normally and safely flown to the ground, and thus, the user may have psychological security.

公开(公告)号：US10514394B2

公开(公告)日：2019-12-24

申请号：US15268433

申请日：2016-09-16

申请人： Tektronix, Inc.

发明人： Michael J. Mende ,  Richard A. Booman ,  Wayne M. Wilburn

IPC分类号： G01R1/30 ,  G01R1/067 ,  G01R13/00 ,  G01R1/20

摘要： A probe or accessory for use with an electrical test and measurement instrument can include an input to receive an input signal from a device under test (DUT), a clamp control unit or oscilloscope to apply a clamping/limiting level to the input signal to generate an output signal, and/or a control unit output port to provide the clamped/limited output signal to an oscilloscope.

公开(公告)号：US10473724B2

公开(公告)日：2019-11-12

申请号：US16083168

申请日：2017-03-21

申请人： Continental Automotive GmbH

发明人： Andreas Aumer ,  Hans-Michael Graf ,  Martin Schramme

IPC分类号： G01R31/3835 ,  G01R1/20 ,  G01R35/00 ,  G01R15/14

摘要： The invention relates to a method for determining a load current, which is based on conducting a calibration current in a particular manner and on particular calculation methods.

公开(公告)号：US20190341858A1

公开(公告)日：2019-11-07

申请号：US16236485

申请日：2018-12-29

申请人： Qingchang Zhong

发明人： Qingchang Zhong

IPC分类号： H02M5/458 ,  G01R1/20 ,  G01R15/04 ,  H02J3/38

摘要： This invention discloses a power electronic converter that has a common reference point for the measurement of voltages and currents, making it possible to use non-isolated or isolated voltage and current sensors. The disclosed converter has an N-type power electronic conversion leg that consists of two sets of power electronic devices with their both ends connected to a capacitor to form a DC bus and their mid-point connected to the common reference point through an inductor and a current sensor. The disclosed converter has one or more power electronic conversion leg that consists of two sets of power electronic devices with the positive end connected to the positive rail of the DC bus and the negative end connected either to the common reference point N, in which case the power electronic conversion leg is denoted the A-type, or to the negative rail of the DC bus, in which case the power electronic conversion leg is denoted the B-type. For each present A-type or B-type power electronic conversion leg, its mid-point is connected to one terminal of the corresponding input/output port, together with a current sensor connected between the common reference point and the other terminal of the corresponding input/output port. The disclosed converter also has a capacitor connected to the positive rail of the DC bus and the common reference point through a current sensor. A storage system and/or a load can be connected in parallel with or in place of this capacitor. The disclosed converter can be used for DC/DC, AC/DC, DC/AC, and AC/AC conversion.

公开(公告)号：US20190324064A1

公开(公告)日：2019-10-24

申请号：US16503574

申请日：2019-07-04

申请人： James J. Kinsella

发明人： James J. Kinsella

IPC分类号： G01R19/00 ,  G01R1/20 ,  G01R27/02 ,  G01R35/00

摘要： A ratio metric (RM) approach to providing the current sensing function of service currents to smart metering applications results in an RM current sensor assembly and RM differential current sensor assembly that can replace prior art sensors currently used for this purpose, with substantial reduction in cost of operation and size. The current sensor assemblies leverage current dividers having estimated current ratios, with any error being calibrated out of the sensor assembly by various approaches, such as requiring a single parametric adjustment of a burden resistor value to establish an expected output magnitude for a known current input magnitude to a requisite degree of accuracy. Calibration profiles for the entire service current range can be generated and used with the current sensor assemblies. Multiple RM current sensor assemblies can be used for segments of the current range to further increase accuracy. Improved and low cost leakage current protection is provided.

公开(公告)号：US20190324058A1

公开(公告)日：2019-10-24

申请号：US16317437

申请日：2017-06-07

申请人： KOA CORPORATION

发明人： Tamotsu ENDO ,  Ryo OSAWA

IPC分类号： G01R1/20 ,  G01R31/28

摘要： Provided is a current measuring device including a first wire member formed of a conductive metal and a second wire member formed of a conductive metal, the second wire member partially including a resistive element metal, in which the first wire member and the second wire member are arranged in parallel with an insulator sandwiched therebetween in a portion where at least the resistive element metal is present.

公开(公告)号：US10451652B2

公开(公告)日：2019-10-22

申请号：US14332757

申请日：2014-07-16

申请人： Teradyne, Inc.

发明人： Roger Allen Sinsheimer ,  David Walter Lewinnek ,  Luis Antonio Valiente

IPC分类号： G01R1/18 ,  G01R1/04 ,  G01R1/073 ,  G01R1/20

摘要： An example system includes a circuit board having electrical elements; a wafer having contacts; and an interconnect to route signals between the electrical elements and the contacts. The interconnect includes multiple layers, each of which includes a flexible circuit. The flexible circuit includes a conductive trace disposed thereon. The interconnect also includes shielding between adjacent layers of the multiple layers. The shielding is electrically connected to ground.