功率放大器

In the experiment, some testing measures are adopted to ensure geting reliable results. For example: coupling liquid is used between the transducer and the specimen to ensure efficient transmission. In order to reduce the system nonlinearity, the loading power of the amplifier is enlarged.

实验过程中还采取了一系列确保超声非线性测量结果可靠性的措施，如：为了减少超声传播过程中的衰减，在压电探头和试样的接触表面加入耦合剂；为了降低实验系统本身产生的非线性，加大了放大器的加载功率。

The chip consists of a power mos, mode select circuit, driving circuit, and two series of controller circuit. The controller consists to the active current sensing circuit, sample and hold circuit, hysteresis current comparator, voltage to current converter, error amplifier and non-overlap circuit.

晶片包含一组功率电晶体、模式选择电路、驱动电路及二组控制电路，控制电路主要架构有主动式电流感测电路、取样保持电路、磁滞电流比较电路、电压对电流转换电路、误差放大器及非重叠电路。

Variable gain amplifier is an analog circuit, which varies gain, adjusts signal dynamic range and stabilizes signal power.

可变增益放大器是模拟单元电路之一，起着变化增益、调整信号动态范围、稳定信号功率的作用。

This thesis presents a low-power design of a CMOS high dynamic variable gain amplifier for ultra-wideband wireless applications.

本论文针对超宽频无线网路应用提出低功率高动态范围可变增益放大器之设计。

A large mode area core erbium doped K9-glass single-mode photonic crystal fiber is designed by getting the pump and signal intensity profiles from plane wave expansion methodand solving propagation-rate equations.Its diameter is 20μm,limit ellipticity error is 94.7%,and limit offset of inner ventage is 0.1μm.Then we analyze its amplifier characteristics.

根据平面波展开法给出泵浦光和信号光本征模场分布，结合速率方程和功率传输方程设计一种大单模尺寸的实芯掺铒K9玻璃大模式面积单模光子晶体光纤，芯径为20μm；分析其椭圆度容差为94.7%，最内层小孔最大允许偏移量为0.1μm；分析了掺铒K9玻璃光子晶体光纤放大器的放大特性。

Efficient suppression of thermally induced nonreciprocity in fiber-optic Sagnac interferometers with novel double-layer winding .

刘驰，漆云风，周军，杜松涛，何兵，董景星，魏运荣，楼祺洪，王之江，&高功率单频保偏光纤放大器输出特性研究&，光学学报 30，

In addition, the speaker voice coil skew, speakers deviate from the core or magnetic gap are all sorts of things, speaker cone deformation, fed to the power amplifier may also result in excessive distortion.

此外，扬声器音圈歪斜、扬声器铁心偏离或磁隙中有杂物、扬声器纸盆变形、放大器馈给功率过大也会造成失真。

I'll demonstrate how to use the power amplifiers?

我来示范一下如何使用这个功率的放大器。

An Energy Amplifier, which is composed of three cyclotrons, is one type of ADS. It will be used to produce 14.4 MW proton beam (12 mA, 1.2 GeV) and to operate a 1 500 MW nuclear reactor.

能量放大器是一个基于回旋加速器组合的ADS方案，由三级回旋加速器组成的加速器系统可以产生流强为12mA和能量为1.2GeV的质子束（束流功率14.4MW），用以驱动1500MW的核反应堆。

An Energy Amplifier, which is composed of three cyclotrons, is one type of ADS. It will be used to produce 14.4 MW proton beam (12 mA, 1.2 GeV) and to operate a 1500 MW nuclear reactor.

能量放大器是一个基于回旋加速器组合的ADS方案，由三级回旋加速器组成约加速器系统可以产生流强为12mA和能量为1.2GeV的质子束（束流功率14.4MW），用以驱动1500MW的核反应堆。

The reasons of iron ions content overproof in grade Ⅱ desalting water system,such as variation water quality,contamination of regenerant , operation adjustment of pretreatment system and switching operation of bed were discussed.

对二级脱盐水系统中铁离子含量超标的原因，如来水水质发生波动、再生剂受到污染、预处理系统操作调整、床体运行切换等进行了论述。

You were hired to drum up new business, so go and do it.

公司雇你招徕新业务，你就做你的事好了。