Ceramic substrate
    1.
    发明授权
    Ceramic substrate 有权
    陶瓷基板

    公开(公告)号:US08173283B2

    公开(公告)日:2012-05-08

    申请号:US12626518

    申请日:2009-11-25

    摘要: A ceramic substrate according to one aspect of the invention comprises a main surface wherein a diameter of a first imaginary circle inscribed in a circumference of the main surface is represented by C (m), a thickness of the ceramic substrate is represented by h (m), a Poisson ratio of the ceramic substrate is represented by ν, a density of the ceramic substrate is represented by ρ(kg/m3), a Young's modulus of the ceramic substrate is represented by E(Pa), a deflection of the ceramic substrate is represented by X (m), the deflection being measured in a condition that the ceramic substrate is supported in a region between the first imaginary circle and a second imaginary circle which is a concentric circle of the first imaginary circle and has a diameter of C-0.01 (m), wherein X≦1.5×(C4/h2)×A and A={3×9.807×ρ×(1−ν2)×(5+ν)}/{28×(1+ν)×E} are satisfied.

    摘要翻译: 根据本发明的一个方面的陶瓷基板包括主表面,其中内表面在主表面的圆周上的第一假想圆的直径由C(m)表示,陶瓷基板的厚度由h(m ),陶瓷基板的泊松比由&ngr表示,陶瓷基板的密度由(kg / m3)表示,陶瓷基板的杨氏模量用E(Pa)表示, 陶瓷基板由X(m)表示,在陶瓷基板被支撑在第一假想圆和作为第一假想圆的同心圆的第二假想圆之间的区域中被测量的偏转被测量,并且具有 直径为C-0.01(μm),其中X&NlE; 1.5×(C4 / h2)×A和A = {3×9.807×&rgr;×(1-&ngr2)×(5 +&ngr) ×(1 +&ngr;)×E}。

    Test device
    2.
    发明授权
    Test device 失效
    测试设备

    公开(公告)号:US3872386A

    公开(公告)日:1975-03-18

    申请号:US35808973

    申请日:1973-05-07

    申请人: LUHOWY GABRIEL J

    发明人: LUHOWY GABRIEL J

    摘要: The disclosure relates to a test instrument of compact size, operable with a battery source and capable of measuring with high precision voltages in the millivolt and low voltage ranges, milliamps, provide precision outputs in the millivolt and low voltage ranges, precision milliamps outputs and provide a two wire transmitter simulation. Measurements are made utilizing light emitting diode (LED) devices and operational amplifiers operating at high levels to minimize errors.

    摘要翻译: 本公开涉及一种紧凑尺寸的测试仪器,可与电池源一起使用,并能够以毫伏和低电压范围内的高精度电压进行测量,毫安,提供毫伏和低电压范围内的精密输出,精密毫安输出和提供 一个双线发射机模拟。 使用发光二极管(LED)器件和运行放大器进行高电平测量以最小化误差。

    Current-Sensing Apparatus and Method for Current Sensing
    3.
    发明申请
    Current-Sensing Apparatus and Method for Current Sensing 审中-公开
    电流检测装置及电流检测方法

    公开(公告)号:US20090289694A1

    公开(公告)日:2009-11-26

    申请号:US12309488

    申请日:2007-07-24

    CPC分类号: G01R15/205

    摘要: At least one embodiment of the invention specifies a current-sensing apparatus and/or a method for its operation which is based on the current sensor provided being a GMR sensor in the form of a gradient sensor and on the gradient sensor, or a component which includes this gradient sensor, itself including a conductor section of a compensating circuit. As such, the current in the measurement circuit can be compensated for by a current in the compensating circuit and the compensating current can be evaluated as a measure of the electrical variable to be detected for the measurement circuit.

    摘要翻译: 本发明的至少一个实施例规定了一种电流感测装置和/或其操作方法,其基于提供的梯度传感器形式的GMR传感器和梯度传感器所提供的电流传感器, 包括该梯度传感器,其本身包括补偿电路的导体部分。 因此,可以通过补偿电路中的电流补偿测量电路中的电流,并且可以将补偿电流评估为测量电路要检测的电变量的量度。