负阻抗

并运用负阻抗变换器的负阻作用对现有的LC阻尼振荡实验进行了改进并给出了具体的电路，使实验结果更加多样化。

Dynatron effect of negative impedance converter has been employed to improve the existing LC damping surge experiment and an idiographic electrical circuit has been given to make the results of experiment diverse .

由于HID灯具有负阻抗特性，不能直接加到电网上，因此，需要在电网和HID灯中加一个镇流器作为接口。

Since HID lamps have negative impedance characteristics , it can not be directly added to the electricity grid . So , it needs ballast as the interface which restrains current between HID lamps and grid .

介绍一种高压智能采集终端，该终端采用高端的悬浮式电源设计和可消除DC-DC变换器负阻抗影响的滤波电路，解决了高压智能表的稳定供电问题；

An intelligent type of gathering terminals of high voltage was introduced , and the suspended power source and filtering circuit were designed to accommodate the steady power supply on high voltage site .

同时，用一种简单的跨导运放结构作为VCO中的负阻抗，解决了VCO振荡幅度限幅问题。

By using a simple operational transconductance amplifier ( OTA ) as a negative impedance used in VCO , the problem of confining VCO 's oscillation to a desired range is solved .

为了发现更多的振荡体系，Koper和本组先后分别提出了负阻抗判据和循环伏安判据，实践表明循环伏安判据要比负阻抗判据有效、直观、快捷。

In order to find more oscillators , Koper and our group advanced successively impedance-based and cyclic-voltammetry-based experimental criteria , respectively , and much practice shows that the latter is more effective , intuitive and less time-consuming than the former .

负阻抗变换器的实现与应用研究

A Study of the Realization and Application of Negative Impedance Converter

回转器与负阻抗变换器的仿真分析

Emulating analysis of circle round device and negative impedance converter

一种负阻抗变换器的特性研究及其应用

The Characteristic Study and Application of One Type of NIC

实现回转器的一种方法&负阻抗变换器的应用

One method to obtain gyrator ─ application of the negative impedance converter

这在非线性负阻抗的模拟实现中，更为突出。

This phenomenon appears even more striking in the simulation realization of non-linear negative impedance .

本文对用一种负阻抗变换电路同电小天线导线相结合构成的有源天线进行了理论分析。

An active antenna consisting of electrically small antennas and a negative impedance changing circuit is analyzed in this paper .

该判据是在考虑恒功率负载负阻抗大小的基础上，给出了滤波器元件参数的约束条件。

The presented criteria utilize the dynamic negative incremental impedance of the CPL to place design constraints on the filter parameters and thus prevent instabilities .

首先介绍了有源接收天线的应用背景、发展历史以及其优点，接着分析了有源接收天线相关特性，并介绍了负阻抗变换原理。

First , the background , the development history and the advantage are introduced . Then the characteristics of the active receiving antenna and the principle of negative impedance conversion is introduced .

文中设计了一种新的负阻抗变换器，通过其阻抗变换作用来改善发射天线的输入阻抗特性，从而大大地拓宽了有源发射天线的带宽。

We design a negative impedance converter , through its function of impedance transformation the input impedance characteristics of the transmitting antenna is improved , so the bandwith of active transmitting antenna will be widen greatly .

本文对用负阻抗变换电路同小圆锥螺旋天线相结合，构成的有源接收天线进行了理论分析，并给出了该有源天线稳定工作的条件。

This paper has made a theoretical analysis of active receiving antenna formed by combining negative impedance converting circuit with small cone helical antenna , and pointed out the stable working conditions for such an active antenna .

实际系统故障时，系统正、负序阻抗可能会不相等，使得健全相相间电流突变量不为零，这将对该选相元件产生一定的负面影响。

On the spot , the positive and negative impedances of power system are not always equal , which may make the fault component of sound phases not be zero any more , consequently the result mentioned above will be invalid .

在换流器准稳态模型的基础上考虑了直流系统的负序阻抗，能满足电压不对称条件下交直流混合系统计算的速度与精度要求。

This paper takes the negative impedance into consideration on the basis of QSS ( Quasi Steady State Model ) model of converter , and the results of computation can meet the need of speed and precision for a mixed AC / DC system when asymmetric faults happened .

给出一种利用等效负电阻实现阻抗增加的方法。

This paper presents a novel scheme for enhancing resistance that utilizes an equivalent negative resistance .

一个验证电流负反馈改变输出阻抗的实用线路

A practical circuit to prove the change of output impedance by current negative feedback

提出了以定子负序视在阻抗滤波值作为故障特征的检测方法，该方法适用于异步电动机巡回监测系统。

Another detection method , which takes the filtered value of stator negative sequence apparent impedance as the fault feature , is also put forward . The former and latter are suitable for the asynchronous motor continuous / discontinuous monitoring system .

具体工作如下：提出了以定子负序视在阻抗低通滤波值作为故障特征量，应用神经网络技术适当整定检测阈值的定子绕组匝间短路故障检测方法；

Firstly , a detection method of stator winding inter-turn short circuit fault , which takes the low-filtered stator negative sequence apparent impedance as fault feature , is presented . By using neural network technique , the detection threshold can be appropriately set up .