电流放大

在电网中安装滤波器来治理谐波污染，可以有效地降低系统网损，能够避免谐波谐振或电流放大。

Installation filter in power system to control harmonic pollution could effectively reduce the system loss and avoid harmonic resonance or current amplification .

分析了输电线和电容器的谐波阻抗特性，并对电容器有可能造成的谐振和谐波电流放大进行了分析。

This article analysed the characteristic of harmonic impedance in network components of electric transmission line and capacitor , discussed the resonance and harmonic current amplification , which may be caused by capacitor .

并对LC无源滤波系统导致电流放大问题进行了仿真研究。

And the simulation results demonstrated the problem of harmonic currents amplied .

结果表明，γ辐照使光敏器件的光电流Ip、电流放大倍数β和光电响应时间t减小，暗电流Id增加，结电容C基本不变。

The experimental results showed that the light current Ip , current amplification factor β and response time to photo - devices were all decreased while dark current Id increased and junction capacitance C unchanged basically .

实验结果指出，器件的电流放大系数器件大J、3结特性硬，无效触发分流小，可有效地缩短开通时间。

The experiment shows that if the current amplifier factor is big , Junction J_3 is hard and the ineffective trigger branch current is low , the turn-on time can be shorten effectively .

利用NI的PCI6221数据采集卡，通过LabView系统分析压电薄膜的传感特性和频率特性，并在此基础上设计并调试了压电悬臂梁差分电荷放大电路及微电流放大电路。

Sensing and frequency characteristics of piezoelectric-film have been analyzed using the NI-DAQ PCI 6221 by Lab VIEW system . Based on the analysis above , sensing circuits ( differential charge amplifier and micro-current amplifier ) have been designed and debugged .

本文从包括埋层影响的集区杂质分布出发，求出了寄生PNP晶体管的共基极电流放大系数。

We try to obtain the common-base current gain a of the parasitic PNP transistor from the eloping profile of the collector region including the effect of buried-layer .

光电位置检测系统设计。根据二维PSD的工作原理，实现PSD的检测电路，包括微电流放大、和差运算和除法电路，具有调零和调增益功能。

Based on the principle of the two dimensional PSD , the detection circuit with zero point and gain adjustment functions , including weak current amplifying , addition , subtraction and division functions , is designed .

本文表明，Si-SiO2界面过渡层中的载流子陷阱对硅体内电子存在慢俘获作用，这将导致npn型双极晶体管电流放大系数h（FE）随时间的正向漂移。

It is presented in this paper that dc current gain hFE of npn bipolar transistors drifts with time due to the slow trapping effect in the Si-SiO2 interface transition layer on the electron in the Si-substrate .

文中还讨论了各结构参数对JFFT的最大电流放大倍数的影响。

The effects of several configuration parameters in the JFFT on the maximum current amplification are also discussed .

信号发生装置中两种电流放大电路的设计及比较

Two Types of Current Amplifying Circuit in Signal Generator and Their Comparison

以往对门极可关断晶闸管电流放大系数的研究主要集中在定性分析。

We researched mainly on Gate Turn-off Thyristor in qualitative analysis before .

射极输出器电流放大倍数的分析

Analysis of the current amplification factor of emitter follower

磁放大器的电流放大倍数分析方法

A Method of Current Gain Analysis of Magnetic Amplifiers

调容式消弧线圈的谐波电流放大问题分析

Problems of harmonic current amplification for arc suppression coils with variable tuning capacitors

利用谐波潮流计算程序研究变电站的电流放大问题

Application of harmonic flow calculation to the problem of current amplification in electric substations

理解晶体三极管电流放大作用的关键

Key to Understanding BJT 's Current-amplifying Function

可编程微电流放大电路的设计

Design of Programmable Weak - current Amplifier

晶体管可以说它是微电子中非常重要的器件，它最主要的功能是电流放大和开关作用。

Transistor is viewed as a very important amplification and switching device in micro-electric field .

一种电流放大型自旋晶体管

A Spin Transistor with Current Amplification

这种震动通过电流放大后，就可以从手术室的扩音器中收听到。

The vibrations are amplified electrically and can be heard through loudspeakers in the operating room .

晶体管电流放大因数

Transistor current amplification factor

一个是在给定的注入条件下如何保证足够大的电流放大；

At a higher injection level , the current amplification factor drops off as the emitter current density is increased .

文章采用电力系统谐波潮流计算程序来分析变电站的电流放大问题。

This paper adopts the method of power system harmonic flow calcuation to analyse the problem of harmonic amplification in electric substations .

设计电光采样系统整体结构，设计光机械延迟线结构、电光采样结构、光电转换及微电流放大电路、锁相检测模块；

The structure of the EOS system is designed , including opto-mechanical delay line ( OMDL ), embodiment of electro-optic modulator , and lock-in detection module .

整个系统由热释电电流放大电路、测温电路、A／D转换卡和软件组成。

This system is composed of a pyroelectric current amplified circuit , a measuring temperature circuit , an A / D card and a developed system .

对几种弱电流放大与测量方法进行了比较，主要介绍了电流A/D方法的工作原理、软硬件实现以及实际性能。

Several low current amplifying and measuring methods are compared , mainly describing the theory of operation , software and hardware design and performance of the A / D conversion circuit .

对测试探头产生的微弱信号进行了调理，采用更适合微电流放大的集成运算放大器，对信号放大和滤波电路进行了设计和开发。

An integrated operational amplifier which is more suitable for micro-current amplification to process the weak signal form the probe is used to design and develop the signal amplification and filtering circuit .

第二级，多模光纤隔离电气连接并传递信号，再经电流放大和栅极辅助驱动输出开关管控制信号。

Secondly , multimode fiber-optics is used to isolate electrical connection and transmit the signals , while current amplifier and grid electrode auxiliary drivers are assembled to generate the advanced control signals .

在分析的基础上，根据国内外经验讨论了一种抑制谐波电流放大的有效方法，并对抑制的效果进行了仿真分析。

Discussed on the basis of the analysis , according to domestic and foreign experience , we have an effective method to suppress harmonic current amplification , and inhibition of the effects of the simulation .