查询词典 feedback amplifier

In this design, a single-phase exciting signal gener AT ed by RC oscill AT ory circuit is applied to the rotor of synchro. The sine and cosine signals induced on st AT or are amplified by instrument AT ion amplifier and connected to the converter AD2S83, which is designed according to tracking goniometry. Digital logic control and address encoding are processed by FPGA , and the converted 16-bit parallel angle d AT a and direction signal are transferred to DSP.

本设计中通过RC振荡电路为感应同步器转子提供单相激磁信号，定子上感应出来的正弦和余弦两路信号通过仪表放大器的差分放大之后提供给基于跟踪型测角原理的转换芯片AD2S83，通过 FPGA 实现数字逻辑控制以及地址解码，将转换后的16位并行转角数据以及方向信号送入DSP中。

The system consists of signal acquisition systems, signal processing, show circuit and control circuits, and other components, through the acquisition by Hall sensor voltage signal to the amplifier will signal amplification, and then in the A / D converter after the digital signal into the microcontroller , Through the SCM software programming by the magnetic field signal, the final adoption of LED display to the magnetic field strength.

该系统由信号采集系统、信号处理、显示电路和控制电路等组成，通过霍尔传感器采集得到电压信号，再经放大器将信号放大，然后在A/D转换后将数字信号送入单片机，通过单片机软件编程得到磁场信号，最后通过LED显示出磁场强度。

It is necessary to own a simple equipment to measure total harmonic distortion of amplifier.

对于经常接触音响的DIY发烧友，拥有一台简易的测量放大器总谐波失真度的仪器是很必要的。

However, NEC has developed a new harmonically tuned amplifier which achieves 45% efficiency on otherwise standard components.

但是NEC已经开发出了一种新的谐波调谐放大器，可以从其它方面使这些标准设备的效能增强45%。

Add a good sense of timing and essentially you've got everything you need in a headphone amplifier.

此外它的速度感也很好，基本上你对耳放所要求的，它都能满足了。

I have no real opinion as to the sound of the Phoenix as a Headphone amplifier.

我没有真正关于凤凰作为耳放的观点。

This device, which is composed of oscillator, switching capacitor, second-order tracking system, digital switching system, power-amplifier circuit and Helmholtz coils , can produce rotating magnetic field whose frequency and strength can be adjusted continuously.

该装置由振荡器、开关电容、二阶跟踪系统、数字开关系统、功放电路及亥姆霍兹线圈组等部分组成，可以产生频率、强度连续可调的旋转磁场。

It is very simply a hi-fi system – with turntable, amplifier, and speakers – cast in concrete.

这是非常简单的音响系统，转盘，放大器-和扬声器-一成不变的。

Nowadays, people emphasize high power and high efficiency as well as high fidelity feature of audio power amplifier.

人们在追求高保真度音频功放的同时，也希望功放有大的输出功率和高效率。

But, because mobility of raceway groove of Si CMOS parts of an apparatus is low, bring about parts of an apparatus cross guide the Si parts of an apparatus that falls under same size, so gain of its open loop also is less than the Si operation amplifier of identical structure and dimension.

但是，由于Si CMOS器件沟道迁移率低，导致器件的跨导低于相同尺寸下的Si器件，所以其开环增益也小于相同结构和尺寸的Si运算放大器。

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。