电路

Two part of the hardware used in the experiment are main circuit and the control circuit.

本研究的实验装置包括主电路和控制电路。

In these 3 kinds of circuit, slip rheostat is different to the characteristic of circuit control and influence.

在这三种电路中，滑动变阻器对电路控制和影响的特征不同。

According to the whole scheme, the main circuit and the control circuit are designed.

按照总体方案，设计了系统的主电路和控制电路。

Especially, the technology of Automatic Gain Control and signal processing are studied which are key factors working on the performance of the receiver. Based on analyzing the theory of automatic Gain Control, operational amplifiers 0P37 and logarithmic D/Aconverter AD7111A are used to design variable gain amplifiers which can be controlled numerally, A/D convector LTC1405 is Used to test the echo, Complex Programmable Logic device is used for controller, and an arithmetic is designed for automatic Gain Control which is simulated and analyzed in order to test its feasibility.

本文在分析自动增益控制AGC原理的基础上，采用集成运放OP37和数控增益衰减器AD7111A设计可数字控制的可变增益运放模块；采用高速A／D转换器LTC1405作为回波信号检测模块；采用复杂可编程逻辑器件CPLD作为核心控制模块，构成数字自动增益控制电路，并设计粗调和细调步进控制相结合的算法，对回波信号的增益进行精确而快速的调节控制，使回波信号振幅快速稳定在设计指标范围内，利于接收机后续信号处理电路对回波信号作进一步的处理。

Comparators are widely used in analog circuits, such as: A / D, D / A convertor.

比较器广泛应用于模拟电路中，如：A/D，D/A电路。

This paper analyse the concepts and some different circuits topology of the power factor correction circuit.

本文分析了PFC电路的基本原理及几种不同电路拓扑。

The temperature control system consists of AT89S52 single-chip microcomputer, cortege type keyboard unit , display unit and temperature control circuit of solid state relay,using microprocessor AT89S52 to collect and control temperature in real time.

温控系统由AT89S52单片机、行列式操作键盘、显示、继电器控温电路等部分组成，使用AT89S52单片机对温度进行实时的检测和控制，显示电路采用74164芯片进行动态扫描，能够同时显示当前温度和设定温度值。

This text to 1 kind from calculator automatically control and carry on the electronics dollar that the data collect a spare part a total quantity Fu to shine on the spot test system to carry on pulling a description, and pass application that system to the CMOS numerical electric circuit CC4069 carry on with total the amount of synchronous electricity parameter's on-line diagraph, and radiate a quickly collect of the countermarch fire data, study pull CMOS numerical electric circuit a total quantity Fu shine on on-line Fu to shine on to respond to characteristic and Fu to shine on behind fast time back a fire effect.

本文对一种由计算机自动控制并进行数据采集的电子元器件总剂量辐照现场测试系统进行拉描述，并通过应用该系统对CMOS数字电路CC4069进行与总剂量同步的电参数在线测量，以及辐射后退火数据的快速采集，研究拉CMOS数字电路总剂量辐照在线辐照响应特性和辐照后快速时间退火效应。

These new methods adopt the circuit information contained in the power supply line current to realize the fault diagnosis.

这些检测技术是从电路电源线中的电流信号中提取电路的故障信息实现故障诊断。

In the digital circuit, the digital cymometer is the circuit of time sequence, it is mainly formed by trigger with memory function.

在数字电路中，数字频率计属于时序电路，它主要由具有记忆功能的触发器构成。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。