查询词典 feedback amplifier

A kind of low-noise amplifier is designed according to the electric characteristic of skin electric potential.

根据皮肤电位的电特性，设计出一种低噪声放大器，并计算和分析了这种放大器的噪声因子，计算和分析结果表明该放大器是能够用于检测皮电信号的低噪声放大器

Low noise amplifier can amplify own noise, but its resistance and electric capacity noise should be low.

低噪声放大器除了放大自身噪声外，还需要电阻、电容的噪声也很低。

At present, switching power amplifier becomes the research focus of power electrics field.

本文以开关功率放大器为基础，在分析引起开关功率放大器输出失真的原因的基础上，提出了一种开关功率放大器的新型控制方法。

In the AMB system, a power amplifier which provides magnetic coil with exciting current to produce electromagnetic force, is one of the main components.

在电磁轴承系统中，功率放大器的作用是向电磁铁线圈提供相应的控制电流以产生所需要的电磁力。

Electrometer and nanovoltmeter characteristics differ, so the operational amplifier requirements for these two types of instruments are also somewhat different.

静电计和纳伏表的特性不同，所以这两种仪器对运算放大器的要求也有所不同。

Applications of this method in an electron tube amplifier and oscillator arc discussed.

本文指出此种关系之存在，并引用於电子管放大器及振荡器中相角之测量。

A candidate should be able to explain elementary circuit systems performance, such as amplifier, comparator, DAC circuit, etc.

预测并解释电路系统的性能，如可放大器，比较器，数模转换电路等。

Low noise amplifier ; elliptic function bandpass filters ; balanced mixer ; ultra-fine thin-film process ; automatic gain control

低噪声放大器；椭圆函数带通滤波器；平衡混频；超微细薄膜工艺；自动增益控制

A novel label abstraction and erasion scheme based on a Fabry-Perot semiconductor optical amplifier is proposed for all-optical separation of the bit-serial label from payload and its performance is investigated by simulation.

本文提出了一种基于法布里－泊罗半导体光放大器的标签提取和擦除的方案，并通过仿真对其性能进行了分析。

The semiconductor optical amplifier- cross gained modulation wavelength converter in the core node is used to transfer the payload from the old label to the new label to achieve the label erasion and insertion.

基于此光标记系统，研究Mach-Zehnder调制器的消光比、半导体光放大器的偏置电流、接收模块的输入功率、泵浦光功率、探测光功率对误码率的影响，以及转换波长与转换效率的关系。

Aquatic or marsh-growing fern allies; known to have existed since the Cenozoic; sometimes included in Lycopodiales.

生活于水中或湿地的蕨类；从新生代生存至今；有时归于石松目之中。

The engine was uprated from a 90hp Franklin to a 125hp Lycoming.

改良过的引擎是从90hp到125hp莱康明富兰克林。