和电路

This article angle has analyzed the higher professional technical education from CBE/DACUM "the electrical control technology" the curriculum ability localization, according to the higher professional technical education "the electrical control technology" the curriculum ability localization, point out the insufficiency and flaw existed in commonly used control electric appliance choice, electrical pilot wire road map, electricity control system installment, wiring craft, electrical control line fault diagnosis system approach, new starting velocity modulation equipment and control circuit, control circuit and main circuit aspect and so on.

摘要本文从CBE/DACUM角度分析了高职&电气控制技术&课程的能力定位，根据高职&电气控制技术&课程的能力定位，指出了现行高职&电气控制技术&教材在常用控制电器选择、电气控制线路图、电气控制系统安装、接线工艺、电气控制线路故障诊断的系统方法、新型起动调速设备及控制电路、控制电路与主电路的连接等方面存在的不足和缺陷。

This design uses AT89C51 SCM chip controls the charging process, achieving A/D convert and show circuit. The battery voltage information can be detected by the external circuit to choose the correct charge mode, realizing the intelligent conversion mode of the trickle charge, the constant current charging, the constant voltage charging and the float charge.

采用AT89C51单片机芯片作为充电过程的控制芯片进行电路设计，实现A/D转换和显示电路，并根据外部电路检测到的电池电压信息选择正确的充电模式，实现在涓流、恒流、恒压及浮充电模式之间的智能转换。

A redundant control circuit comprises a pair of heater circuits for heating a hot melt adhesive hose assembly to a predetermined temperature level, and a pair of temperature sensors which are used to sense the temperature of the hot melt adhesive hose assembly and to control energization of the heater circuits in order to maintain the desired temperature level.

一种冗余控制电路，包括用于将热熔胶软管组件加热到预定温度水平的一对加热器电路，和用于感应热熔胶软管组件的温度并控制加热器电路的电压以便维持期望的温度水平的一对温度传感器。

This design main be how average type beam drill electricity charge circuit be in progress design, main content include host circuit design, control circuit design, instruction circuit design and under the control of component choice, not bad come true Z3050 type beam drill starting, stop, be rotating, roll back and a few corresponding protection function.

本设计主要是多普通型摇臂钻床的电控线路进行设计，主要内容包括主电路的设计、控制电路的设计、指示电路的设计和控制元器件的选择，可以实现Z3050型摇臂钻床的启动、停止、正转、反转以及一些相应的保护功能。

Secondly, this work introduces the basic operating principle of mixer and several types of structures as well. Theoretical analysis of impact on performance (linearity, conversion gain, side band suppression etc.) posed by design parameters is given.

其次，介绍了混频器的工作原理及常见的电路结构，针对上混频器的电路特点，从理论上分析了电路中各部分对其性能指标（线性度、转换增益、边带抑制等）的影响，并通过图表较为直观的反映了性能指标和设计参数的关系。

Heating principle of intermediate frequency induction furnace and some problems in shunt-wound power source spacer circuit were discussed.

对中频感应炉的加热原理和并联型电源逆变电路存在问题进行了探讨，并就此逆变电路存在问题进行了改进，同时，采取措施减少中频供电线路的损耗，实践表明：改进后的逆变电路能全功率输出以及启动能力提高，且节能效果显著。

A sort of quality detection system based on DSP and VB for power circuit board drive was designed,which mainly aimed at the phenomenon of lower detection speed,complicated control circuit,lower level visualization for industrial sewing machine power circuit board .

针对工业缝纫机功率电路质检系统存在检测速度慢、控制电路复杂、可视化程度低等问题，提出了基于DSP和VB的驱动器功率电路质检系统的设计方案。

The designing of this article first introduced the determinant keyboard's theory and application,through to analysis its connection electric circuit in very great detail ,and then used VHDL hardware description language and FPGA device to complete FPGA-based determinant keyboard connection electric circuit design with modular design mathod.

本文设计首先介绍行列式键盘的原理和应用，通过对其接口电路的详细分析；然后利用VHDL硬件描述语言和FPGA器件并采用模块化设计的方法完成了基于FPGA的行列式键盘接口电路的设计；最后通过计算机仿真，对本文设计的行列式键盘接口电路的正确性进行了验证。

By using synchronous rectifier, a higher efficiency low-voltage output DC/DC converter module can be achieved. This paper presents a kind of synchronous rectification DC/DC converter, which includes active clamp circuit, insulating transformer, and current double synchronous rectifier.

为提高低输出电压的DC/DC变换器的效率，提出了一种倍流同步整流有源箝位DC/DC变换器，电路拓扑主要包括有源箝位电路、隔离变压器和倍流同步整流电路。

The whole circuit includes two parts, one is pulse generator circuit, the other is SCR drive circuit.

整个电路包括了脉冲发生电路和驱动电路两部分。

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。