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1. 发明授权

US09559680B2 Isolated high speed switch 有权
标题翻译：隔离式高速开关
公开(公告)号：US09559680B2
公开(公告)日：2017-01-31
申请号：US14522838
申请日：2014-10-24
申请人： Keithley Instruments, Inc.
发明人： Kyle K. Rakes
IPC分类号： H03K17/0412 , H03K17/687 , H03K17/689 , H03K17/0416 , H03K17/785 , H03K17/081
CPC分类号： H03K17/04123 , H03K17/04163 , H03K17/08104 , H03K17/6871 , H03K17/6877 , H03K17/689 , H03K17/785
摘要： A circuit structured to drive an isolated high speed voltage metal-oxide-semiconductor field-effect transistor (MOSFET) switch, including a first MOSFET and a second MOSFET configured to operate as a switch, a capacitor, a charging component in parallel with the capacitor, a first switch in series with the charging component, and a second switch in parallel with the charging component and the capacitor. The stored voltage in the capacitor is sent to the gates of the first MOSFET and the second MOSFET when a second switch is open and a first switch is closed.
摘要翻译：一种构造成驱动隔离的高速度电压的金属氧化物半导体场效应晶体管（MOSFET）开关的电路，包括配置为用作开关的第一MOSFET和第二MOSFET，电容器，与电容器并联的充电元件，与充电部件串联的第一开关，以及与充电部件和电容器并联的第二开关。当第二开关断开并且第一开关闭合时，电容器中存储的电压被发送到第一MOSFET和第二MOSFET的栅极。

2. 发明申请

US20140354354A1 NANOVOLT AMPLIFIER DESIGN 有权
标题翻译： NANOVOLT放大器设计
公开(公告)号：US20140354354A1
公开(公告)日：2014-12-04
申请号：US13906051
申请日：2013-05-30
申请人： Keithley Instruments, Inc.
发明人： Wayne C. Goeke
IPC分类号： H03F3/45
CPC分类号： H03F3/45 , H03F1/303 , H03F3/38 , H03F3/45475
摘要： A circuit can include operational amplifier having a first input, a second input, and an output, first and second resistors in series between the output of the op-amp and a ground, and multiple switches configurable to toggle the circuit between a positive phase and a negative phase.
摘要翻译：电路可以包括运算放大器，其具有第一输入，第二输入和输出，串联在运算放大器的输出和地之间的第一和第二电阻器，以及多个开关，其可配置为在正相和一个负相。

3. 发明申请

US20140347158A1 ISOLATION TRANSFORMER FOR USE IN ISOLATED DC-TO-DC SWITCHING POWER SUPPLY 有权
标题翻译：用于隔离DC-DC-DC开关电源的隔离变压器
公开(公告)号：US20140347158A1
公开(公告)日：2014-11-27
申请号：US13902004
申请日：2013-05-24
申请人： Keithley Instruments, Inc.
发明人： Wayne C. Goeke , John C. Gibbons
IPC分类号： H01F27/36
CPC分类号： H01F27/362 , H01F27/288 , H01F2027/2833
摘要： An isolated DC-to-DC switching power supply includes an isolation transformer having a magnetic core, a first winding around the magnetic core, a first winding-shield around the magnetic core, a second winding-shield within the first winding-shield, and a second winding within the second winding-shield. There is no direct coupling between the first winding and the second winding since the second winding is enclosed within the second winding-shield and the second winding-shield is enclosed within the first winding-shield.
摘要翻译：隔离的DC-DC开关电源包括具有磁芯的隔离变压器，围绕磁芯的第一绕组，围绕磁芯的第一绕组屏蔽，第一绕组屏蔽内的第二绕组屏蔽，以及在第二绕组屏蔽内的第二绕组。第一绕组和第二绕组之间没有直接耦合，因为第二绕组被封闭在第二绕组屏蔽内，而第二绕组屏蔽封闭在第一绕组屏蔽内。

4. 发明授权

US08810256B1 Impedance meter calibration 有权
标题翻译：阻抗表校准
公开(公告)号：US08810256B1
公开(公告)日：2014-08-19
申请号：US12336896
申请日：2008-12-17
申请人： Wayne C. Goeke
发明人： Wayne C. Goeke
IPC分类号： G01R31/27
CPC分类号： G01R35/005 , G01R27/02
摘要： A method for verifying the adjustment for the purpose of calibration of an impedance meter having at least a first and a second measurement range includes measuring within the first range a first measured value of a test impedance; measuring within the second range a second measured value of the test impedance; and comparing the first and second measured values to verify the calibration of the impedance meter.
摘要翻译：用于验证用于校准具有至少第一和第二测量范围的阻抗计的目的的调整方法包括在第一范围内测量测试阻抗的第一测量值; 在第二范围内测量测试阻抗的第二测量值; 并比较第一和第二测量值以验证阻抗计的校准。

5. 发明申请

US20140218064A1 SMU RF TRANSISTOR STABILITY ARRANGEMENT 有权
标题翻译： SMU射频晶体管稳定性布置
公开(公告)号：US20140218064A1
公开(公告)日：2014-08-07
申请号：US13901430
申请日：2013-05-23
申请人： Keithley Instruments, Inc.
发明人： James A. Niemann
IPC分类号： G01R31/26
CPC分类号： G01R31/2601 , G01R31/2607 , G01R31/2612
摘要： An RF testing method and system by which a DC measurement pathway can also act like a properly terminated RF pathway. Achieving this requires that the output HI, LO, and Sense HI conductors are terminated in a frequency selective manner such that the terminations do not affect the SMU DC measurements. Once all SMU input/output impedances are controlled, as well as properly terminated to eliminate reflections, the high-speed devices will no longer oscillate during device testing, so long as the instruments maintain a high isolation from instrument-to-instrument (separate instruments are used on the gate and drain, or on the input and output of the device). The output of HI, LO and Sense HI conductors are coupled to various nodes of the DUT via three triaxial cables, the outer shieldings of which are coupled to each other and to an SMU ground.
摘要翻译： RF测试方法和系统，通过该测试方法和系统，DC测量路径也可以像正确终止的RF路径那样起作用。实现这一点要求输出HI，LO和Sense HI导体以频率选择性方式终止，使得终端不影响SMU DC测量。一旦所有的SMU输入/输出阻抗被控制，并且正确终止以消除反射，高速器件将不再在器件测试期间振荡，只要仪器保持与仪器到仪器的高度隔离（分离的仪器用于栅极和漏极，或器件的输入和输出）。 HI，LO和感测HI导体的输出通过三根三轴电缆耦合到DUT的各个节点，其外屏蔽彼此耦合并连接到SMU接地。

6. 发明申请

US20140015612A1 POWER ENVELOPE CONTROLLER AND METHOD 有权
标题翻译：电力环境控制器和方法
公开(公告)号：US20140015612A1
公开(公告)日：2014-01-16
申请号：US13549338
申请日：2012-07-13
申请人： Martin J. Rice
发明人： Martin J. Rice
IPC分类号： H03F3/16
CPC分类号： H03F3/16 , H03F3/21
摘要： A power envelope controller configured for use with an amplification stage and method are disclosed. The power envelope controller includes voltage feedback input circuitry configured to receive a voltage feedback signal representing an internal voltage drop across the amplification stage and current feedback input circuitry configured to receive a current feedback signal representing an output current of the amplification stage. An analog multiplier is configured to generate an internal power dissipation signal representing the internal power dissipation of the amplification stage based on the voltage and current feedback signals. A comparator circuit is configured to compare the internal power dissipation signal to a power threshold and generate a power control error signal when the internal power dissipation of the amplification stage exceeds the threshold.
摘要翻译：公开了配置成与放大级和方法配合使用的功率包络控制器。功率包络控制器包括电压反馈输入电路，电压反馈输入电路经配置以接收代表放大级两端的内部电压降的电压反馈信号，电流反馈输入电路经配置以接收表示放大级输出电流的电流反馈信号。模拟乘法器被配置为基于电压和电流反馈信号产生表示放大级的内部功耗的内部功耗信号。比较器电路被配置为当内部功耗信号与功率阈值进行比较时，当放大级的内部功耗超过阈值时，产生功率控制误差信号。

7. 发明申请

US20130285629A1 Dynamic Current Limit Apparatus and Method 有权
标题翻译：动态电流限制装置和方法
公开(公告)号：US20130285629A1
公开(公告)日：2013-10-31
申请号：US13591534
申请日：2012-08-22
申请人： Gregory Sobolewski
发明人： Gregory Sobolewski
IPC分类号： G05F1/56
CPC分类号： G05F1/56 , G01R1/36 , G01R19/12 , H02H9/025
摘要： A dynamic current limiter circuit is disclosed. The dynamic current limiter includes an input node an output node. The dynamic current limiter also includes a current control valve coupled between the input and output nodes, the current control valve being configured to limit current flow between the input and output nodes based on a control input. The dynamic current limiter also includes a current change detector coupled between the input and output nodes, the current change detector being configured to detect a change in current through the input and output nodes and generate a control signal configured to drive the control input. The current control valve is configured to limit current flow between the input and output nodes in response to the current control signal.
摘要翻译：公开了一种动态电流限制器电路。动态限流器包括输入节点和输出节点。动态限流器还包括耦合在输入和输出节点之间的电流控制阀，电流控制阀被配置为基于控制输入来限制输入和输出节点之间的电流。动态电流限制器还包括耦合在输入和输出节点之间的电流变化检测器，电流变化检测器被配置为检测通过输入和输出节点的电流变化，并产生被配置为驱动控制输入的控制信号。电流控制阀被配置为响应于当前控制信号来限制输入和输出节点之间的电流流动。

8. 发明授权

US07872481B1 Low glitch multiple form C summing node switcher 有权
标题翻译：低毛刺多表C求和节点切换器
公开(公告)号：US07872481B1
公开(公告)日：2011-01-18
申请号：US12113391
申请日：2008-05-01
申请人： Wayne C. Goeke , Martin J. Rice
发明人： Wayne C. Goeke , Martin J. Rice
IPC分类号： G01R31/302
CPC分类号： G01R31/2889
摘要： A measurement system with selectable feedback paths includes a DUT interface including a first and a second DUT sensor, the first sensor being connected to a first feedback path for providing a measure of a first DUT characteristic, the second sensor being connected to a second feedback path for providing a measure of a second DUT characteristic, the sensors having a shared reference path and each feedback path including a set point adjustment; a differential amplifier system including differential inputs and differential outputs, the differential outputs being applied to the DUT interface; and a multi-pole switcher for connecting the differential inputs to either the first feedback path and the reference path or to the reference path and the second feedback path, respectfully. The first feedback path is selected to produce a desired first DUT characteristic or the second feedback path is selected to produce a second desired DUT characteristic.
摘要翻译：具有可选择的反馈路径的测量系统包括：DUT接口，包括第一和第二DUT传感器，第一传感器连接到第一反馈路径，用于提供第一DUT特性的测量，第二传感器连接到第二反馈路径用于提供第二DUT特性的量度，所述传感器具有共享参考路径，并且每个反馈路径包括设定点调整; 包括差分输入和差分输出的差分放大器系统，差分输出被施加到DUT接口; 以及用于将差分输入连接到第一反馈路径和参考路径或者参考路径和第二反馈路径的多极切换器。选择第一反馈路径以产生期望的第一DUT特性，或者选择第二反馈路径以产生第二期望的DUT特性。

9. 发明授权

US07724017B2 Multi-channel pulse tester 失效
标题翻译：多通道脉冲测试仪
公开(公告)号：US07724017B2
公开(公告)日：2010-05-25
申请号：US11513749
申请日：2006-08-31
申请人： Yuegang Zhao
发明人： Yuegang Zhao
IPC分类号： G01R31/28
CPC分类号： G01R31/2621
摘要： A method for testing a plurality of DUTs using a plurality of DC instruments and a pulsed instrument includes contemporaneously applying DC signals to the DUTs with respective DC instruments and sequentially performing pulsed measurements on the DUTs with the pulsed instrument.
摘要翻译：使用多个DC仪器和脉冲仪器来测试多个DUT的方法包括使用相应的DC仪器同时向DUT提供DC信号，并用脉冲仪器在DUT上顺序执行脉冲测量。

10. 发明授权

US07683650B1 Measurement instrument with synchronized interference signals 有权
标题翻译：具有同步干扰信号的测量仪器
公开(公告)号：US07683650B1
公开(公告)日：2010-03-23
申请号：US11753323
申请日：2007-05-24
申请人： Dan Baker , Michael D. Rayman , Gregory Sobolewski
发明人： Dan Baker , Michael D. Rayman , Gregory Sobolewski
IPC分类号： G01R31/26 , G01R31/28
CPC分类号： G01R19/25 , G01R23/20
摘要： An instrument for measuring electrical parameters includes a measurement section having a measurement aperture; and a support section providing at least one of power and digital control for the measurement section. The support section has an interference signal frequency, wherein the interference frequency is an integer multiple of the reciprocal of the measurement aperture and the measurement aperture and the interference signal are phase-locked. As a result, the effect of the interference signal on electrical parameters measured is minimized.
摘要翻译：用于测量电参数的仪器包括具有测量孔的测量部分; 以及为测量部提供功率和数字控制中的至少一个的支撑部。支持部分具有干扰信号频率，其中干扰频率是测量孔径的倒数的整数倍，并且测量孔径和干扰信号是锁相的。结果，干扰信号对测得的电参数的影响被最小化。

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