220V

110 / 220V Automatic Switching System for Power Supply

一种磁滞可调110/220V自动切换系统

Application of PLC 220V AC I / O Modules in General Industrial Control Computer

PLC220VAC开关量I/O模块在普通工业控制计算机上的应用

220V / 20A High Frequency Switched Power Supply Research Base on PWM Technology

基于PWM技术的220V/20A高频开关电源的开发

A Carrier Communication System Transmitting Signals by 220V Power Supply Circiut

利用220V供电线传输信号的载波通讯系统

Discussion on the problem of380 / 220V agriculture electrical system earthing security

农电网380V/220V系统接地制式的安全问题探讨

The problems and the solutions of three phase load unbalance for 220V power line rebuild in the rural network

农网220V线路改造中三相负荷不平衡问题及解决方法

The general inverter designed in this dissertation is a 220V voltage type AC-DC-AC modal .

本文设计的通用变频器为单相220V交-直-交电压源型变频器。

This paper presents the construction and implementation of a new micro computer controlled modular high frequency conversion 220V uninterruptible DC power system .

介绍一种新型智能模块化高频变换220V直流不间断电源系统的构成及其实现。

The replacing methods and notices of electric apparatus between 220V and 380 V control circuits are introduced in this paper .

本文介绍了220V与380V控制线路之间电气元件的替换方法及注意事项。

When the voltage is 220V , the microstructure of casting bottom present the best fine granular eutectic silicon .

电压为220V时铸件的底面显微组织出现了最佳的颗粒状的共晶硅。

On-off signal isolated data output ( DO ) passways ( contact without power , 1A / 220V );

8路隔离开关量输出（DO）通道（无源触点，1A／220V）；

This paper probes into a new method to transmit images by using the most widely existent 220V low-voltage power distribution networks as the transmission medium .

本文探讨一种以最广泛存在的220V低压配电网作为传输介质，能够传输图像（视频）的新方法。

The open-air wires of three-phase four-wire system are extensively used in supply main of 220V & 380V electric network of China .

在我国380/220伏电力网络中，广泛采用三相四线制架空线作为配电干线。

Inverter power supplies applied in cars transform from 12V / 24V of storage battery DC into 220V AC.

车载逆变电源（又叫电源转换器）可以把汽车蓄电池的12V/24V直流电转变成大多数电器所需要的220V交流电。

Finally , a 220V / 10A self-cooled prototype converter is built , and the simulation and the experimental results are also included in this paper .

最后，研制出了自冷式220V/10A的工程样机，给出了仿真和实验结果。

This paper introduces an unique computer control system consisted of PLC 220V AC I / O modules and general industrial control computer , analyzes and studies its structures , characteristics and applications .

本文介绍了由PLC220VAC开关量I/O模块和普通工业控制计算机组成的一种独特的计算机控制系统，并对系统的结构、特点和应用情况进行了分析和研究。

The difference of output voltage of inverter and 220V is set as control signal , controller change the PWM signal to regulate buck-boost converter and three-phase rectifier .

以逆变器输出的电压和220V的差值作为控制信号。设计控制器根据控制信号改变直流变换器和三相可控整流的PWM控制信号。

This paper analyzes this topology ′ s operating principles in detail , the main experimental waveforms got from a 220V / 10A prototype validate the validity of this improved method .

本文从工作原理出发，对电路进行了详细分析，设计出一台220V/10A样机，给出了主要实验波形，验证了该电路的正确性。

Two methods for measuring voltage transformers ratio of220V / 220V are intro-duced . We analyze and compare them from theory and principle . At last test and verify them .

介绍了两种针对220V/220V这种特殊变比的电压互感器的检定方法，对这两种方法进行了技术分析和比较，最后用实例验证了理论分析。

As contrast with literature reports , we found out two of the electrocuted cases with the voltage of 220V showed no necrosis in heart but the blood cells and vessel abnormalities .

结果显示，两例220伏电压电击死的心脏除发现血管壁及其中的血细胞有改变外，心肌及传导系统未见文献所述的坏死性改变。

We detailed analysis and experiment charging system from the power grid 220V AC to 600V DC voltage process , including EMI filtering , high-frequency switch rectifier , filtering and BOOST converter .

详细分析与实验了从电网中220V交流电到储能电容电压的600V直流电过程，包括EMI滤波、整流滤波和高频开关BOOST变换器，设计了高频电感器。

Methods : The Experiment was divided into six groups , including : 380V AC , 220V AC , 220V DC , flame burned , hot metal burned and the control .

方法：本实验共分六组，包括380VAC组、220VAC组、220VDC组、火焰烧伤组、金属灼伤组及正常对照组。

This system is suitable for the low-voltage distribution field taking 220V 、 380V as working voltage . The network monitoring structure is perfect , stable and reliable , which can forecast electrical fire effectively .

本系统适用于以220V、380V为工作电压的低压配电领域，网络监控结构完善，稳定性和可靠性好，能够有效预警电气火灾。

A novel high frequency switch power supply , which is suitable for power network outside , is introduced in this paper , and a automation switching circuit for 110V / 220V input voltage has been designed .

介绍了一种适用于户外电网远程监测监控的不间断高频开关电源，设计了一种简易可靠的110V/220V自动切换电路，以满足宽范围电压输入要求。

The issues on isolated220V / 220V multi-winding voltage transformer used in calibration for single-phase Watt-hour meter are brought forward . And improvement in them are given in detail according to experiment .

针对目前各种单相电能表检定装置配用的220V/220V多绕组隔离电压互感器，提出了所存在的问题，并结合作者的实践工作经验，给出了具体的改进措施。

This text introduce intelligent electrocircuit what direct current of batteries transform to 220v alternating current by rising volt , It has power cut check , timer turn off empty load , over loading protect .

本文介绍一种将电池直流电压升压后再通过桥路转换成交流220V电压输出电路，经PIC16F73单片机进行控制，使它具有市电掉电检测、空载定时关机、过载保护等智能的功能。

With a 220V / 40A Level 2 charger , it takes 3.5 hours to fully charge a depleted battery , says Mercedes , and 2 hours to raise levels to 60 % .

梅赛德斯称，使用220伏/40安的二级充电桩充电的话，充满电量耗尽的电池需要三个半小时，充到60%的电量需要两小时。

This article introduces the principle of anion generator , designs circuit producing high voltage from the power of ac 220V and dc + 12V and explains writer ` s opinion on the quality of anion generator .

介绍了负离子发生器的工作原理，设计出使用220V交流电源和＋12V直流电源时的高压产生电路。阐发了笔者评价负离子发生器质量优、劣的观点。

In the front section , the pre-regulator , active power factor correction circuit which bases on the active power factor correction technology of switching power supply is used to obtain the 400V DC output from the 220V AC input ;

前级使用有源功率因数校正电路对输入的220V交流电压进行预稳压，将其升压为输出400V的直流电压；

This paper introduces the application of permanent magnetic mechanism in DC contactor . Under the condition of manipulative voltage ( DC 220V ), the permanent magnetic mechanism can be used in the DC contactor replacing the tradition latch device .

本文提出了永磁机构在直流接触器中的应用，在DC220V控制电压下，永磁机构可代替传统的锁扣机构在接触器中的使用。