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In the part of the diesel engine control, the position closed loop control system was adopted includes: microprocessor, isolation circuit, power magnify circuit, accelerograph actuator of the engine and the signal modulate circuit.

对于发动机控制部分，详细讲述了采用位置闭环控制的发动机电控单元的几个主要组成部分：微控制器、隔离电路、功率放大电路、油门执行器和信号调理电路等。

The basic LC circuit and the resonant dc link with active clamping circuit are analyzed in details and conclusion can be drawn that the later is the simplest and the most reasonable circuit.

对基本的LC电路和带主动箝位的谐振环节电路进行了详尽的分析，研究表明：后者是最为简单合理的电路形式。

A phase advancer has a main AC-AC frequency conversion circuit consisting of thyristors.When sampling circuit detects the zero passage signal produced in rotor current of motor,main circuit controlled with advanced microcomputer controlling technique will change the AC voltage of 380V,50HZ into compensating voltage with the same frequency as that of rotor voltage and rotor current 90°in phase lay to achieve the goal to raise the power factor of the motor.

由可控硅构成的交变频主电路，在采样电路检测到电机转子电流产生的过零信号后，经过先进的微机控制技术控制主电路，将380V、50HZ交流电压转换成转子频率相同，相位滞后转子电流90°的补偿电压，达到提高电动机功率因数的目的。

Algebraic logic 2 logic function based on the express ways and simplification of the 3 in the scale of integrated circuits analysis and design of 4 flip-flops and a simple application circuit 5 synchronous sequential circuit analysis and design of 6 common synchronous sequential circuit 7 integrates asynchronous sequential circuits analysis and design of digital logic 8 the latest developments in technology is our university teachers digital logic courseware, very good

逻辑代数基础 2逻辑函数的表示方式和化简 3中规模集成电路的分析和设计 4触发器及其简单应用电路 5同步时序电路的分析和设计 6常见的同步集成时序电路 7异步时序电路的分析和设计 8数字逻辑技术的最新发展是我们大学老师数字逻辑的课件，非常不错

ABSTRACT: With the development of the times, digital electronic technology has been popular in all of our lives, work, research, and all fields. This paper introduces a NC DC power supply, the power consists of analogue power supply, display circuit, control circuit, digital-to-analog converter and circuit amplifier.

随着时代的发展，数字电子技术已经普及到我们生活，工作，科研，各个领域，本文将介绍一种数控稳压电源，本电源由模拟电源、显示电路、控制电路、数模转换电路、放大电路五部分组成。

This paper introduces a NC DC power supply, the power consists of analogue power supply, display circuit, control circuit, digital-to-analog converter and circuit amplifier.

模拟电源提供各个芯片电源、数码管、放大器所需电压；显示电路用于显示电源输出电压的大小。

First, the scattering parameters of PT are transformed in to Y-parameters and equivalent "p" circuit model could be established. Second, vector fitting method is used to approximate admittances of equivalent "p" circuit model by rational functions. At last, a circuit synthesis method for rational functions is applied to build circuit model.

该方法首先将测量得到的互感器的散射参数转化为导纳参数并构建互感器的p形等值电路；然后，应用矢量匹配法对p形等值电路的导纳参数进行有理函数逼近获得它们部分分式和形式的频域表达式；最后采用电路综合方法构建出导纳元件的等值电路。

DC power transmission simulationmodel is set up in this paper with the Matlab software, and various faults such as single-phasegrounding short circuit, phase to phase short circuit, three-phase circuit grounding shortcircuit and inverter bridge short circuit are simulated in this model.

用MATLAB软件建立了电力系统直流输电仿真模型，模拟了单相接地短路故障、相间短路故障、换流器桥臂以及单桥故障，经过近百次仿真运行，得出了各种故障下的特性曲线，准确描述了直流输电系统在发生大扰动后的暂态过程，并从理论上进行了科学分析，得出了各种故障对换相失败的影响。

As high-voltage electrostatic generator poor working environment, tens of thousands of times every day of the Bodong, the Company starting from this factor will be completely isolated road circuit and gas, and static electricity generated in a fully enclosed part of Xiang Tinei, so that dust can not enter , Can greatly reduce damage frequency circuit boards used four different connectors to ensure that the Bu Kuaicuo Next, I so no matter how far away from you, regardless of whether you know circuit, can be a direct replacement of circuit boards, not only reduces maintenance Cost, saving maintenance time.

由于高压静电发生器工作环境恶劣，每天成千上万次的拨动，本公司从这一因素出发，将电路和气路完全隔离，并将静电产生部分完全密封在一个箱体内，使粉尘无法进入，可大大降低损坏频率；线路板采用四个不同的接插件，可确保不会错接，这样无论您离我多远，无论您是否懂得电路，都可直接更换线路板，不但降低了维修成本，还节约了维修时间。

To this end, the use of MCS-51 series AT89C51 single-chip device designed as the central traffic light control circuit, with a total of cathode seventh time the digital display module, the traffic light display module, transfer module, crystal oscillator circuit, reset circuit and control circuit 8051 in accordance with the actual traffic flow through the port P3 chip set red, green and double-time to kindle a digital countdown display,The turn of the three colors of lights and emergency lighting in case of interruption of processing.

为此，采用MCS-51系列单片机AT89C51为中心器件来设计交通灯控制电路，配以七段共阴极数码管显示时间的显示模块，交通灯显示模块，调时模块，晶振电路，复位电路以及控制电路，实现根据实际车流量通过8051芯片的P3口设置红、绿灯燃亮时间以及双位数码管显示倒计时，三种颜色灯交替点亮以及紧急情况下的中断处理功能。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。