公开(公告)号：US5359290A

公开(公告)日：1994-10-25

申请号：US2618

申请日：1993-01-11

Applicant: Robert A. Cervas

Inventor： Robert A. Cervas

IPC: F02P17/00 ,  G01R15/12 ,  G01R31/00 ,  G01R31/28 ,  G01R31/02 ,  G01R19/165

CPC classification number: F02P17/00 ,  G01R15/12 ,  G01R31/005 ,  G01R31/2829

Abstract: A multi-test, hand-held instrument and method for testing engine sensors and ignition modules includes a housing enclosing a battery and an electrical circuit. The electrical circuit includes a first test circuit electrically interconnected with said battery for testing potentiometer-type, temperature-type and Hall effect type sensors and ignition modules, a second test circuit electrically interconnected with the battery for testing oxygen, reluctance and knock sensors, and a third test circuit for testing the battery in the instrument. A first switch selects between the first or second test circuits, while a second switch selects between a component testing mode and a battery testing mode. Electrical leads extend outwardly from the housing and are connectable to the engine component being tested. A pair of light indicators, with each light indicator including a LED and a resistor connected in parallel, provide a variable output display to allow the test instrument to be used to test various engine sensors and ignition modules, and to test these components on different types of vehicles.

Abstract translation: 用于测试发动机传感器和点火模块的多测试手持式仪器和方法包括封闭电池和电路的壳体。 电路包括与所述电池电互连以测试电位计型，温度型和霍尔效应型传感器和点火模块的第一测试电路，与用于测试氧气，磁阻和爆震传感器的电池电互连的第二测试电路，以及 用于测试仪器中的电池的第三测试电路。 第一开关在第一或第二测试电路之间进行选择，而第二开关在元件测试模式和电池测试模式之间进行选择。 电气引线从壳体向外延伸，并且可连接到被测试的发动机部件。 一对指示灯，每个指示灯包括一个LED和一个并联的电阻器，可提供可变输出显示屏，以使测试仪器能够用于测试各种发动机传感器和点火模块，并对不同类型的这些组件进行测试 的车辆。

公开(公告)号：US5166599A

公开(公告)日：1992-11-24

申请号：US754459

申请日：1991-09-03

Applicant: Karl Hochreuther ,  Gunter Roppelt ,  Herbert Ziegler ,  Robert Kindermann ,  Horst Hopfner

Inventor： Karl Hochreuther ,  Gunter Roppelt ,  Herbert Ziegler ,  Robert Kindermann ,  Horst Hopfner

IPC: G01R15/00 ,  G01R15/08 ,  G01R15/12 ,  H01H9/24

CPC classification number: G01R15/12 ,  G01R15/002

Abstract: In multimeters having a plurality of input connections there is a danger of the measuring conductors being incorrectly connected in such a manner that the setting of the measurement range switch does not correspond to the input connections to which contact is made. In order to avoid damage which may be caused by making an incorrect contact to the input connections, an electrically and/or mechanically acting disabling device is coupled to the measurement range switch for permitting a disabling of particular input connections. The disabling is carried out in such a manner that contact can always only be made to that input connection for receiving a test signal through the measuring conductors, to which a measurable variable is assigned that corresponds to the measurable variable set with the measurement range switch.

Abstract translation: 在具有多个输入连接的万用表中，存在测量导体的错误连接的危险，使得测量范围开关的设置不对应于进行触点的输入连接。 为了避免可能由于与输入连接不正确接触而导致的损坏，电和/或机械作用的禁用装置耦合到测量范围开关，以允许禁用特定的输入连接。 禁用是以这样的方式执行的，即，只能通过测量导体接收用于接收测试信号的输入连接，对可测量的变量分配对应于可测量的变量与测量范围开关对应的测量导体。

公开(公告)号：US4198607A

公开(公告)日：1980-04-15

申请号：US909436

申请日：1978-05-25

Applicant: Karl Beinitz ,  Volker Kaltenbach

Inventor： Karl Beinitz ,  Volker Kaltenbach

IPC: G01R15/00 ,  G01R15/12 ,  G01R19/00 ,  G06G7/24 ,  G06G7/12 ,  G01R1/30

CPC classification number: G01R15/005 ,  G01R15/12 ,  G01R19/0023 ,  G06G7/24

Abstract: A measuring amplifier device is provided with an input circuit producing different functions of an input signal in order to permit output signals in different measuring ranges to be produced. The circuit can be constituted by an operational amplifier having a feedback connection composed of a series arrangement of several elements each defining a particular measuring range together with subtraction stages forming signals corresponding to each range, or by a plurality of diodes or diode-resistor networks connected to divide the input signal between them and each defining a different measuring scale.

Abstract translation: 测量放大器装置具有产生输入信号的不同功能的输入电路，以便产生在不同测量范围内的输出信号。 该电路可以由具有反馈连接的运算放大器构成，反馈连接由几个元件的串联布置构成，每个元件定义特定的测量范围，以及形成与每个范围相对应的信号的减法级，或者由连接的多个二极管或二极管 - 电阻网络 以分配它们之间的输入信号，并且每个定义不同的测量刻度。

公开(公告)号：US2507803A

公开(公告)日：1950-05-16

申请号：US69162346

申请日：1946-08-19

Applicant: WESTON ELECTRICAL INSTR CORP

Inventor： MILLER JOHN H

IPC: G01R1/30

CPC classification number: G01R15/12 ,  G01R1/30 ,  G01R15/18

公开(公告)号：US1895194A

公开(公告)日：1933-01-24

申请号：US57514631

申请日：1931-11-14

Applicant: WILLY KUTZNER ,  FRED KUTZNER

Inventor： WILLY KUTZNER ,  FRED KUTZNER

IPC: C09J103/02 ,  G01R15/12

CPC classification number: G01R15/12 ,  C09J103/02

公开(公告)号：US20240272202A1

公开(公告)日：2024-08-15

申请号：US18431036

申请日：2024-02-02

Applicant: Schneider Electric Industries SAS

Inventor： Stéphane Sicard ,  Jonathan Caillou ,  Brandon Alves ,  Juliette Koch ,  Stéphane Wolozan ,  Loïc Rondot

IPC: G01R15/12 ,  G01R1/04 ,  G01R15/16 ,  G01R15/18

CPC classification number: G01R15/12 ,  G01R1/04 ,  G01R15/16 ,  G01R15/18

Abstract: A device for measuring electrical quantities in an electrical installation. The device is integrated in a housing including at least one unitary block, the unitary block including a through-slot suitable for receiving an electrical conductor of the electrical installation, the through-slot extending along a main axis. Each unitary block includes: a current measurement module, configured to measure an electrical current flowing in the electrical conductor; a voltage measurement module for measuring voltage through capacitive coupling; and a power supply module, configured to pick up an electrical energy from the electrical conductor, the modules being arranged around the through-slot. The device is configured to obtain at least one electrical quantity on the basis of the current and voltage measurements, and to transmit the at least one electrical quantity via a communication interface.

公开(公告)号：US20240036083A1

公开(公告)日：2024-02-01

申请号：US18361448

申请日：2023-07-28

Applicant: Continental Automotive Technologies GmbH

Inventor： Sören Lehmann ,  Michael Irsigler ,  Anjana Gopinath ,  Wolfgang Weigert ,  Manfred Frimberger

IPC: G01R15/20 ,  G01R15/12 ,  G01R15/14

CPC classification number: G01R15/202 ,  G01R15/12 ,  G01R15/142

Abstract: A current sensor with an electrical conductor which has a first connection and a second connection for contacting a power circuit of a vehicle, and with a first and a second current measurement device for detecting at least one measurement value for the current flowing over the electrical conductor, and with a first evaluation circuit which is connected to the first and/or the second current measurement device and can receive the measurement values of the first and/or the second current measurement device and output a current measurement signal depending on the measurement values, and with a second evaluation circuit.

公开(公告)号：US20190041431A1

公开(公告)日：2019-02-07

申请号：US15683708

申请日：2017-08-22

Applicant: Fu Tai Hua Industry (Shenzhen) Co., Ltd. ,  HON HAI PRECISION INDUSTRY CO., LTD.

Inventor： TAI-CHUN LI ,  TSUNG-JEN CHUANG ,  HAI-WEN WANG

IPC: G01R15/12 ,  G01R19/00

CPC classification number: G01R15/12 ,  G01R19/0023 ,  G01R19/0084

Abstract: A voltmeter of the present disclosure includes a multimeter, a first option switch, a second option switch, a control module, an adjusting power source and a button. The multimeter has a positive probe and a negative probe. The first option switch has two binding posts S1, S2, and a connection pin T1. The second option switch also has two binding posts S3, S4 and a connection pin T2. The positive probe of the multimeter is coupled with the connection pin T1 of the first option switch, the negative probe of the multimeter is coupled with the connection pin T2 of the second option switch. The control module can control the first option switch and the second option switch, and read a value of the multimeter, the multimeter and test a voltage of a circuit by the adjusting power source being equivalent to the voltage of the circuit.

公开(公告)号：US09766270B2

公开(公告)日：2017-09-19

申请号：US14144340

申请日：2013-12-30

Applicant: Fluke Corporation

Inventor： Paul Herman Heydron ,  Jeetendra Patel ,  David Lawrence Epperson

IPC: G01R15/00 ,  G01R1/067 ,  H04B7/26 ,  G01R1/02 ,  G01R15/12 ,  G01R31/28

CPC classification number: G01R1/06788 ,  G01R1/025 ,  G01R15/00 ,  G01R15/12 ,  G01R31/28 ,  H04B7/26

Abstract: An installation test system has a control device and one or more hand-held test devices. The control device and the one or more hand-held devices are in wireless communication via respective communication systems. The control device performs typical pre-power tests including insulation testing and ground testing. There is at least one hand-held device dedicated to testing for residual current in circuit breakers and another hand-held device dedicated to testing for loop impedance. The control device records all test data and stores data in storage.

公开(公告)号：US20170160321A1

公开(公告)日：2017-06-08

申请号：US15299947

申请日：2016-10-21

Applicant: Rohde & Schwarz GmbH & Co. KG

Inventor： Werner Held ,  Martin Leibfritz ,  Marcel Ruf

IPC: G01R23/163 ,  G01R27/06 ,  G01R15/12

CPC classification number: G01R23/163 ,  G01R15/12 ,  G01R27/06 ,  G01R31/2601

Abstract: A measurement apparatus (1) comprising a high frequency measurement unit (2) adapted to measure high frequency parameters (HFP) of a device under test (DUT) connected to ports of said measurement apparatus (1) and a multimeter unit (3) adapted to measure DC characteristics parameters (DCP) of said device under test (DUT) connected via control signal lines (CL) to a control bus interface (6) of said measurement apparatus (1).