查询词典 current amplifier

The paper applies the block diagram for simulation analysis and theoretical calculations of series negative voltage feedback amplifier circuit which is designed by operational amplifier.

采用方框图分析法，对所设计的由运算放大器构成的电压串联负反馈放大电路进行了仿真分析和理论计算。

The gainof the basic amplifier when the feedback network is not present is called the open-loop gain,a,of the amplifier.

基本的放大器的获取当反馈网络不是存在称开放环路的获取， a，放大器。

The principle of the amplifier is get the value of the feedback resistance which can change the gain of the amplifier , then make sure the relay on the right stall, we can get the expectation gain.

本设计实现增益控制的原理是根据OP37G的放大原理公式计算出实现指标增益所需要的反馈电阻值，使用10K继电器选择相应电阻实现增益。

However, research shows that when the measurement signal is very small, a differential amplifier consisting of one OP amplifier can easily cause load effect due to low input resistance and signal voltage decline.

不过，研究显示，当测量信号，是非常小差分放大器组成，其中运算放大器可以很容易造成负载效应，由于低投入及抗病信号电压下降。

As a DC/DC basic structure is adopted, the operational amplifier leads the non inverting input end voltage of the error amplifier to follow the input voltage linearly, thus realizing the linear following relation between the output voltage and the input voltage.

由于采用DC/DC的基础结构，增加运算放大器使误差放大器的同相输入端电压与输入电压线性跟随，从而实现输出电压与输入电压的线性跟随关系。

The MRI system consist of magnetic, spectrometer, RF amplifier, gradient amplifier, computer systems, etc .

磁共振成像系统是由磁体、谱仪、射频放大器、梯度放大器和计算机系统等组成。

This article is intended to discuss the principle and characteristic of a magnetic amplifier ,introduce the action of the magnetic amplifier in the actuator and analyse some troubles of the actuator.

论述了磁放大器的工作原理和特点，介绍了磁放大器在执行器中的应用，对执行器的两种常见故障作了分

Nanjing University of Aeronautics and Astronautics,Nanjing,210016Switching power amplifier of magnetic bearing was a nonlinear system.The performance of the switching power amplifier affected the stability of the magnetic bearing control system.A way of establishing the closed-loop system model of magnetic bearing was presented.

磁悬浮轴承开关功率放大器系统为一非线性系统，开关功率放大器的性能影响磁悬浮轴承控制系统的稳定性，为此，提出了一种建立磁悬浮轴承开关功率放大器系统模型的方法。

The magnetizer consists of coil and incentive power, and AE testing system consists of sensor, pre-amplifier, main-amplifier and filter.

本测试系统的硬件部分由磁化器和AE检测系统两部分组成，线圈和激励电源组成磁化器部分，传感器、前放、主放和滤波电路组成的AE检测部分。

Parametric amplifier in a number of microwave devices, widely used, usually in radar, navigation, electronic warfare, radio astronomy microwave systems such as receiver front-end amplifier, greatly increased the sensitivity of the receiver.

参量放大器在许多微波设备中得到广泛的应用，通常在雷达、导航、电子对抗、射电天文等微波系统中作接收机前端放大器，大大提高了接收机的灵敏度。

Foods high in this vitamin include oily fish such as salmon, tuna and, and fish liver oils.

维生素D含量高的食物包括诸如大麻哈鱼、金枪鱼和鲭鱼之类的油鱼以及鱼肝油。

We need you to cosign our public letter demanding that press intimidation cease immediately, and that all charges be dropped.

我们需要您cosign我们的公共信，要求记者立即停止恐吓，并要求所有收费下降。