公开(公告)号：US06803772B2

公开(公告)日：2004-10-12

申请号：US10396350

申请日：2003-03-26

Applicant: Tatsuya Kunikiyo

Inventor： Tatsuya Kunikiyo

IPC: G01R2728

CPC classification number: G01R27/2611

Abstract: One end of an inductor is connected to a drain of a P-channel type MOS transistor. A source of source of MOS transistor is connected to an electric power source which supplies a voltage Vdd. The other end of inductor is connected via a dummy capacitor to a ground. Furthermore, a dummy resistor is connected between a drain of MOS transistor and the ground. The dummy resistor has the same resistance as that of a parasitic resistor existing between the inductor and the MOS transistor. Another dummy capacitor is connected between the dummy resistor and the ground. A current measuring device is connected between a source of MOS transistor and the ground. A current measuring device is connected between a source of MOS transistor and the ground. A current measuring device is connected between a source of MOS transistor and the ground. A current measuring device is connected between a source of MOS transistor and the ground.

公开(公告)号：US06759855B2

公开(公告)日：2004-07-06

申请号：US10203868

申请日：2002-10-09

Applicant: Josef Frauscher

Inventor： Josef Frauscher

IPC: G01R2728

CPC classification number: H03K17/9502 ,  G01R31/2829

Abstract: In a device for the monitoring and the prognosis of the failure probability of inductive proximity sensors (1) for the monitoring of the position of movable switch rails or rail components, in which the proximity sensor (1) has at least one coil (5) that is supplied by an oscillator (7), and the sensor current flowing by means of variable attenuation is measured and then fed to an evaluation circuit, characteristic lines (18, 22) of the sensor (1) are stored for the course of the sensor currents in dependency of the distance of the movable switch rails or rail components, i.e. the mechanical attenuation in an electric not additionally attenuated condition, and in an electric additionally attenuated condition. The measurement currents (22) corresponding to a mechanical attenuation condition (18), as well as to respective additionally electric attenuated condition are cyclic scanned. The respective measurement currents, or measurement reading pairs are fed to a comparison or evaluation circuit, in which the differences resulting from the characteristic lines are compared to the measured differences.

Abstract translation: 在用于监测和感测接近传感器（1）的故障概率的装置中，用于监测可动开关导轨或轨道部件的位置，其中接近传感器（1）具有至少一个线圈（5） 由振荡器（7）提供，并且测量通过可变衰减流动的传感器电流，然后馈送到评估电路，传感器（1）的特征线（18,22）被存储在 传感器电流依赖于可移动开关导轨或轨道部件的距离，即在电动非附加衰减状态下的机械衰减，以及电动附加衰减状态。 对应于机械衰减条件（18）的测量电流（22）以及相应的附加电衰减条件进行循环扫描。 相应的测量电流或测量读数对被馈送到比较或评估电路，其中将由特征线产生的差异与测量的差异进行比较。

公开(公告)号：US06744261B2

公开(公告)日：2004-06-01

申请号：US10114149

申请日：2002-04-02

Applicant: Haruhiko Yamanaka

Inventor： Haruhiko Yamanaka

IPC: G01R2728

CPC classification number: G01R27/08 ,  H03M1/186

Abstract: An apparatus and method of determining the ratio of an amplification factor before and after changing the amplification factor of a signal normalizer that amplifies the voltage amplitude of signals input from a signal generator so that it stays within a predetermined range, and an alternating-current voltage determination device, including, reversing the phase relationship so that said sine-wave signals are negated, the output voltage amplitude of the signal generator stays within a predetermined range and the step wherein the changing the amplification factor of the signal normalizer and the output voltage amplitude of the signal generator so that they are inversely proportional and a difference is obtained between the output voltage amplitude of the signal normalizer before and after the change.

Abstract translation: 一种确定放大系数之前和之后的放大系数的比率的装置和方法，该放大系数在信号归一化器的放大系数之前和之后放大，该放大系数放大从信号发生器输入的信号的电压振幅，使其保持在预定范围内，并且交流电压 确定装置，包括反转相位关系，使得所述正弦波信号被否定，信号发生器的输出电压幅度保持在预定范围内，并且改变信号归一化器的放大系数和输出电压幅度的步骤 使得它们成反比，并且在变化之前和之后在信号归一化器的输出电压振幅之间获得差异。

公开(公告)号：US06603317B2

公开(公告)日：2003-08-05

申请号：US09789733

申请日：2001-02-22

Applicant: Yoshitaka Tokita

Inventor： Yoshitaka Tokita

IPC: G01R2728

CPC classification number: H02M1/44 ,  H02M7/217

Abstract: In a power supply (AC adapter etc.) of an electronic device, a first Y capacitor and a second Y capacitor are connected in series between two AC input lines which are connected to an input AC cable of the power supply so that input AC voltage will be divided, and a third Y capacitor for the prevention of EMI (Electro-Magnetic Interference) is provided between a grounding line on the secondary side of a transformer of the power supply and the connection point between the first Y capacitor and the second Y capacitor. The capacitance of the second Y capacitor is set larger than that of the first Y capacitor and the second Y capacitor having the larger capacitance is connected to a neutral-side AC input line which is connected to the neutral terminal of an AC socket. Due to the capacitance difference between the first Y capacitor and the second Y capacitor, voltage difference between metal part of the electronic device and the ground is reduced, and thereby the electric shock problem of the electronic device is eliminated or reduced considerably. The reduction of the electric shock problem can be attained without deteriorating the portability of the electronic device and the EMI prevention capability.

公开(公告)号：US06590400B2

公开(公告)日：2003-07-08

申请号：US10184768

申请日：2002-06-28

Applicant: Steven R. Hilliard ,  Michael J. Roberts ,  Geoffrey C. Yerem

Inventor： Steven R. Hilliard ,  Michael J. Roberts ,  Geoffrey C. Yerem

IPC: G01R2728

CPC classification number: G08G1/042

Abstract: An apparatus for measuring the inductance of a wire-loop with noise-cancellation, auto-calibration and wireless communication features, or detector circuit. The apparatus measures the effective change in inductance induced in a wire-loop as a vehicle passes over the wire-loop to produce an inductive signature corresponding to a vehicle.

公开(公告)号：US06549019B2

公开(公告)日：2003-04-15

申请号：US09735230

申请日：2000-12-11

Applicant: Arnold David Nielsen

Inventor： Arnold David Nielsen

IPC: G01R2728

CPC classification number: G01R31/001

Abstract: A testing device generates electromagnetic noise such as transients, power interruptions and Radio Frequency Interference (RFI) for application to an electronic device to test the immunity of the electronic device to electromagnetic noise or to test the performance of the electronic device during exposure to electromagnetic noise. The testing device promotes an economical and efficient evaluation of Electromagnetic Compatibility (EMC) of an electronic device during product design or otherwise. The testing device includes a switch having electrical contacts for producing electromagnetic noise during a transition between a closed state and an open state of the electrical contacts and a trigger that is coupled to the switch. The trigger is arranged to change states between the closed state and the open state of the electrical contact. An input terminal is associated with the switch for applying electrical energy to the switch. An output terminal is associated with the switch for connection to the electronic device for testing operation of the electronic device in response to the electromagnetic noise.

Abstract translation: 测试设备产生诸如瞬变，电源中断和射频干扰（RFI）之类的电磁噪声，以应用于电子设备，以测试电子设备对电磁噪声的抗扰性或在暴露于电磁噪声期间测试电子设备的性能 。 测试设备促进了在产品设计或其他方面对电子设备的电磁兼容性（EMC）进行经济和有效的评估。 测试装置包括具有用于在闭合状态和电触头的打开状态之间的转换期间产生电磁噪声的电触点的开关和耦合到开关的触发器。 触发器被布置成改变闭合状态和电触头的打开状态之间的状态。 输入端子与用于向开关施加电能的开关相关联。 输出端子与用于连接到电子设备的开关相关联，用于响应于电磁噪声测试电子设备的操作。

公开(公告)号：US06518777B2

公开(公告)日：2003-02-11

申请号：US09739108

申请日：2000-12-19

Applicant: Gaku Kamitani ,  Akihiro Hayashi ,  Koichi Teramura

Inventor： Gaku Kamitani ,  Akihiro Hayashi ,  Koichi Teramura

IPC: G01R2728

CPC classification number: G01R27/025

Abstract: A method and an apparatus for measuring insulation resistance capable of removing the influences of piezoelectric noise which is occurring due to mechanical vibrations applied to an electronic component to measure the insulation resistance of the electronic component with high accuracy. In order to do so, a predetermined measured voltage is applied to the electronic component arranged in a position subjected to periodic mechanical vibrations from the outside to measure a current flowing through the electronic component. Then, the value of the measured current flowing through the electronic component is integrated over the period of the mechanical vibrations or over a time which is an integral multiple thereof. With this arrangement, a piezoelectric noise current can be cancelled and only a leakage current to be primarily measured can be extracted. Thus, by calculating the value of the insulation resistance from the value of the current, the insulation resistance can be detected with high accuracy.

Abstract translation: 一种用于测量绝缘电阻的方法和装置，其能够消除由于施加到电子部件的机械振动而产生的压电噪声的影响，以高精度测量电子部件的绝缘电阻。 为了这样做，将预定的测量电压施加到布置在经受来自外部的周期性机械振动的位置的电子部件上，以测量流过电子部件的电流。 然后，在机械振动期间或其整数倍的时间内，流过电子元件的测量电流的值被积分。 通过这种布置，可以消除压电噪声电流，并且只能提取要主要测量的漏电流。 因此，通过根据电流值计算绝缘电阻值，可以高精度地检测绝缘电阻。

公开(公告)号：US06515486B1

公开(公告)日：2003-02-04

申请号：US09603461

申请日：2000-06-22

Applicant: Andy T. Nguyen

Inventor： Andy T. Nguyen

IPC: G01R2728

CPC classification number: G01R31/30

Abstract: A method is provided for quickly determining low threshold voltages and high threshold voltages of a test circuit. Specifically, a transformed voltage transfer curve for the test circuit is generated. The maximum and minimum points of the transfer circuit are determined to calculate transformed voltage threshold values. The transformed voltage threshold are transformed to find the desired threshold voltages.

Abstract translation: 提供了一种用于快速确定测试电路的低阈值电压和高阈值电压的方法。 具体地，产生用于测试电路的变换的电压传递曲线。 确定传送电路的最大和最小点以计算变换电压阈值。 变换的电压阈值被变换以找到所需的阈值电压。

公开(公告)号：US06501280B2

公开(公告)日：2002-12-31

申请号：US09789733

申请日：2001-02-22

Applicant: Yoshitaka Tokita

Inventor： Yoshitaka Tokita

IPC: G01R2728

CPC classification number: H02M1/44 ,  H02M7/217

Abstract: In a power supply (AC adapter etc.) of an electronic device, a first Y capacitor and a second Y capacitor are connected in series between two AC input lines which are connected to an input AC cable of the power supply so that input AC voltage will be divided, and a third Y capacitor for the prevention of EMI (Electro-Magnetic Interference) is provided between a grounding line on the secondary side of a transformer of the power supply and the connection point between the first Y capacitor and the second Y capacitor. The capacitance of the second Y capacitor is set larger than that of the first Y capacitor and the second Y capacitor having the larger capacitance is connected to a neutral-side AC input line which is connected to the neutral terminal of an AC socket. Due to the capacitance difference between the first Y capacitor and the second Y capacitor, voltage difference between metal part of the electronic device and the ground is reduced, and thereby the electric shock problem of the electronic device is eliminated or reduced considerably. The reduction of the electric shock problem can be attained without deteriorating the portability of the electronic device and the EMI prevention capability.

Abstract translation: 在电子设备的电源（AC适配器等）中，第一Y电容器和第二Y电容器串联连接在连接到电源的输入AC电缆的两个AC输入线之间，使得输入AC电压 并且在电源的变压器的次级侧的接地线与第一Y电容器和第二Y电容器的连接点之间设置用于防止EMI（电磁干扰）的第三Y电容器 电容器。 第二Y电容器的电容被设定为大于第一Y电容器的电容，并且具有较大电容的第二Y电容器连接到连接到AC插座的中性端子的中性线AC输入线。 由于第一Y电容器和第二Y电容器之间的电容差异，电子设备的金属部件与地之间的电压差减小，从而电子设备的触电问题被大大消除或减少。 可以在不降低电子设备的便携性和EMI防止能力的情况下实现电击问题的减少。

公开(公告)号：US06252411B1

公开(公告)日：2001-06-26

申请号：US09616543

申请日：2000-07-14

Applicant: Anthony James Moore

Inventor： Anthony James Moore

IPC: G01R2728

CPC classification number: G01R23/16 ,  G01R31/28

Abstract: Electrical filter circuits are tested by connecting to the filter inputs without the need to connect to the filter outputs or to disconnect the outputs from a load. A signal generator of known source resistance applies a.c. signals successively over a range of frequencies to the filter inputs, and a voltmeter monitors the voltage across the filter inputs. Different types of filter have different characteristic shapes for the voltage/frequency curve, and processing is applied to the measured results in a compute to determine the location of inflections in the curve and other characteristics of the curve. Methods are disclosed for determining the values of the individual sub-components of the filter. Where the filter is C-section low pass filter, an interactive process is applied to successively improve the accuracy of the component value determinations. Using the techniques described enables the insertion loss of the filter also to be readily calculated by the computer.

Abstract translation: 电气滤波器电路通过连接到滤波器输入进行测试，而不需要连接到滤波器输出或断开输出与负载的连接。 已知源电阻的信号发生器应用a.c. 在频率范围内连续向滤波器输入信号，电压表监视滤波器输入端的电压。 不同类型的滤波器对于电压/频率曲线具有不同的特征形状，并且在计算中对测量结果应用处理，以确定曲线中的拐点位置和曲线的其他特性。 公开了用于确定过滤器的各个子部件的值的方法。 在滤波器为C段低通滤波器的情况下，应用交互过程来连续提高元件值确定的精度。 使用所描述的技术使得滤波器的插入损耗也可以由计算机容易地计算。