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impedance and low
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  阻抗低
     Operational Amplifier of the High Impedance and Low Drift Apply in Micro-current Measurement
     高阻抗低漂移运算放大器在微电流测量中的应用
短句来源
     A Study on JFET of High Input Impedance and Low Noise
     高输人阻抗低噪声JFET的研究
短句来源
     is This an artical we have primarily described how the operational amplifier of the high impedance and low drift apply in 5x10-5 A micro-current measurement. We also have described in detail and analysed important problems such as the principle of measurement in measurement circuit and relative error in measurement, circuit and analysed the limit sensitivity in measurement circuit.
     本文主要概述了高阻抗低漂移运算放大器在5×10~(-15)A微电流测量中的应用,并对测量电路的测试原理、测量电路的相对误差、及测量电路的极限灵敏度等重要问题进行了较为详细地论述和分析.
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  “impedance and low”译为未确定词的双语例句
     The signal of acidity electrode is detected by a differential amplifier circuit, which consists of operational amplifiers TLC2254 with high input impedance and low drift.
     采用高阻、低漂移运放TLC2254组成高阻差动放大电路用于酸度电极信号测量。
短句来源
     As the operational amplifiers with high input impedance and low temperature drift are available, the authors put forward a method that the above problem can be solved by inserting a simple RC lead network into the levelling loop.
     随着高输入阻抗、低温漂运算放大器的出现,作者认为:在校平回路中附加一个简单的RC超前网路,可克服纬度误差及水平轴常值干扰力矩引起的误差;
短句来源
     A new design and technique for making model HQC-2 infrared device test rig is discussed in this paper. With this improvement, the highinput impedance and low noise AC-impedance convertor has been fabricated. The paper also describes the electro-magnetic shield technique.
     本文讨论了HQC—2型红外器件测试台高输入阻抗、超低噪声交流阻抗变换器的设计技术和电磁屏蔽技术。
短句来源
     On the basis of the principles of virtual cathode microwave generator, this paper gives a vircator experiment arrangement with high impedance and low beam current, and presents numerical calculation and analysis. The experiment measurement results agree with the theoretical calculation. The output peak power obtained in 3cm wave band is bigger than or equal to 20MW.
     基于虚阴极微波发生器的原理,设计一种特殊的高阻抗、低束流Vircator的实验装置,并结合理论研究对该实验系统的各种参量进行了数值计算与分析,实验测试结果与理论设计计算吻合,在3cm频段获得的输出功率≥20MW。
短句来源
     In this paper,a universal circuit is proposed for realizing the transfer functionof second-order allpass . notch and first-order allpass by using a single second generation current conveyor (CC Ⅱ- ). The universal circuit offers very high input impedance and low passive sensitivities.
     本文提出了用单个第二代电流传送器(CCⅡ-)实现二阶全通、陷波和一阶全通转移函数的通用电路,此通用电路具有高输入阻抗和低无源灵敏度特性.
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  相似匹配句对
     impedance plethysmography
     阻抗式测容积法
短句来源
     The measurements of bio impedance
     生物阻抗的测量方法
短句来源
     The measure and research of blood impedance
     血液阻抗的测量与研究
短句来源
     Calculaing Vortex Ring And Its Impedance
     涡流环及其阻抗计算
短句来源
     Low Impedance Piezoelectric Accelerometer
     低输出阻抗压电加速度计
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  impedance and low
In addition, a pulse-shape technique was used for increasing the rise time of the incident pulse to ensure stress equilibrium and homogeneous deformation in the low-impedance and low-strength specimen.
      
In this paper the simulated result that both matched input impedance and low noise temperature Tn can be achieved simultaneously over a wide bandwidth in the single-ended low noise amplifier is proved mathematically and is well interpreted.
      
The feature of the ring-loop slow wave structure is high coupling impedance and low harmonic wave components.
      
The filters employ solid-state differential operational amplifiers, and are designed to present high input impedance and low output impedance.
      
In this paper, we designed the signal conditioning circuits using switched capacitor which has high input impedance and low drift.
      
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The photosensitive field effect transistor is made of a n-channel junction field effect transistor. It has not only the merits of the silicon photo-cell, but also the high input impedance and low noise field effect transisitor as compared to the other photo elements. Its main advantages are high senitivity and relatively quick response in the spectral range from UV to near IR, wide linear dynamic range, useful at 10~(-3)~10~4 lux, low output impedance, direct use in determining absorbance...

The photosensitive field effect transistor is made of a n-channel junction field effect transistor. It has not only the merits of the silicon photo-cell, but also the high input impedance and low noise field effect transisitor as compared to the other photo elements. Its main advantages are high senitivity and relatively quick response in the spectral range from UV to near IR, wide linear dynamic range, useful at 10~(-3)~10~4 lux, low output impedance, direct use in determining absorbance without log amplifier, small size, simple circuit and low manufacturing cost. With this new element, a single wave length dual beam UV detector has been assembled, and is used in a labortory-made high speed liquid chromatograph. The results from the application of the UV detector for the separation of three sets of mixtures composed of aromatic hydrocarbons, nucleosides and nucleotides, as wellas benzene and its derivatives respectively, show clearly that the sensitivity and design of the flowing cell of this detector can satisfy the requirements of the high speed liguid chromatograph.

使用n沟道耗尽型结型场效应晶体管制成了光敏场效应管,由于融合了硅光电池和结型场效应管高输入阻抗和噪音低的优点,光敏场效应管与其他光敏元件相比有下列优点:(1)灵敏度高;(2)线性动态范围大,使用照度范围为10~(-3)~10~4勒克司;(3)光谱响应范围自紫外到近红外范围;(4)响应时间较快;(5)输出阻抗低;(6)可作为吸收值测定元件;(7)体积小、电路简单及价格低廉。应用光敏场效应管作为光敏元件制作了单波长双光路紫外检测器,并用于高速液相层析仪器中。经混合芳烃、核苷及核苷酸、苯及苯衍生物的三组分离试验表明本检测器在灵敏度和流动池的设计上能满足高速液相层析的使用要求。

The authors hold that the recent development of gyrocompasses has opened up broad prospects for electrically torqued types. The control circuit composed of strong damped electromagnetic pendulum and torquer instead of mechanical pendulum or liquid ballistics is used in electrically torqued gyrocompasses which gives possibility of accelerating settling process, compensating regular errors and mode selection as gyrocompass or directional gyro. Conventional electrically torqued gyrocompasses with vertical damping...

The authors hold that the recent development of gyrocompasses has opened up broad prospects for electrically torqued types. The control circuit composed of strong damped electromagnetic pendulum and torquer instead of mechanical pendulum or liquid ballistics is used in electrically torqued gyrocompasses which gives possibility of accelerating settling process, compensating regular errors and mode selection as gyrocompass or directional gyro. Conventional electrically torqued gyrocompasses with vertical damping have latitude error as well as reading error caused by steady horizontal spurious torques. As the operational amplifiers with high input impedance and low temperature drift are available, the authors put forward a method that the above problem can be solved by inserting a simple RC lead network into the levelling loop. An alternative approach is using horizontal damping with a simple lag network in the azimuth loop. The latter is preferable to simplify and minimize the gyrocompass structure.

本文作者认为,80年代陀螺罗经发展趋势,电控式陀螺罗经有其广宽前景。电控式陀螺罗经以强阻尼电磁摆和力矩器组成的修正回路替代机械摆或液体连通器,易实现快稳、可工作于两种状态、规律性误差易补偿等。常见的电控式陀螺罗经均因采用垂直轴阻尼法而存在纬度误差与受水平轴常值力矩干扰而产生读数误差。随着高输入阻抗、低温漂运算放大器的出现,作者认为:在校平回路中附加一个简单的RC超前网路,可克服纬度误差及水平轴常值干扰力矩引起的误差;也可采用水平轴阻尼法,只要在方位回路中选取一个合适的RC滞后网路。从简化结构,实现主罗经小型化考虑,以采用水平轴阻尼法较为有利。

A new design and technique for making model HQC-2 infrared device test rig is discussed in this paper. With this improvement, the highinput impedance and low noise AC-impedance convertor has been fabricated. The paper also describes the electro-magnetic shield technique.

本文讨论了HQC—2型红外器件测试台高输入阻抗、超低噪声交流阻抗变换器的设计技术和电磁屏蔽技术。

 
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