查询词典 power supply

Single-phase Sinusoidal Pulse Width Modulation Inverter Power Supply in this paper belongs to AC power supply (AC-DC-AC convert). Control mode adopts feedback of voltage control. The methods of intermitting power flux and changing duty-cycle can change pulse width of drive voltage that adjust and rectify output voltage ultimately.

本文设计的单相脉宽调制逆变电源属于交流电源，采用电压反馈控制，通过中断功率通量和调节占空比的方法来改变驱动电压脉冲宽度来调整和稳定输出电压。

This X-ray machine's power supply could take the place of expensive import conterparts, actualize the localization of high-tech products, decrease the total cost of supporting products and systems, also have advantages of easily use and maintenance. X-ray machine power supply's plan could promotes developments of medical device, safe security, non-destructive testing and relative fields, strengthen the competitive power of whole industrial, also promotes national economics.

X光机电源实施可以代替昂贵的进口产品，实现高技术产品的国产化，降低了配套产品及系统的成本，同时使用和维护方便。X光机电源的实施可以带动医用设备、安检设备、工业无损探伤设备及其相关配套行业的发展，提高整个行业在国内外市场的竞争力，促进国民经济发展。

Continuity safety electricity rail, Never power-off, As has not oxygen copper transmit power supply, Press fall small, Conductivity doubly; And fitting is used for curve and discretion walk 's design, At automatizes in natal ranks, Absolute is power supply system best choice. W type safety electricity rail that be high ampere electricity rail, Quality is GLOBE STAR the most basic request.

连续性安全电轨，永不断电，以无氧铜输送电源，压降小，导电率倍加；且适用于曲线及高低行走的设计，在自动化生产的行列中，绝对是供电系统最佳的选择。W型安全电轨即高安培电轨，品质是GLOBE STAR最基本的要求。

But in order to reduce the power consumption, the volumes of the total system, and the cost, the designers want to also integrate the power supply module. With the development of semiconductor process and the overspreading of the portable devices, the digital devices request the power supply much better.

同时，随着半导体工艺技术的提高及便携式电子产品的迅猛发展，电子产品对电源的要求越来越大，宽输出电流范围、低功耗是电源IC发展的必然趋势。

The paper combined with the recent the cases of UPS power supply system project of Jiangxi Electric Power Communication Company Information room ,introduced the method of UPS power supply system design and some installation problems which should be pay attention to.

结合近期江西省电力公司电力通信公司信息机房工程 UPS 电源系统建设的实例，介绍 UPS 电源系统的设计选型的一般方法以及安装时应注意的一些问题。

Removed the power supply, computer power supply depends mainly on the exhaust fans, dust box, therefore the most power, with wind carefully cleaned after balloon fitted.

将电源拆下，电脑的排风主要靠电源风扇，因此电源盒里的灰尘最多，用吹气球仔细清扫干净后装上。

Firstly, the reasons of lower power factor and high harmonic are analyzed in the conventional laser power supply, and the need of load characteristic of the laser is also thought. So the new type high performance power supply of DPSSL which is constituted of two convertors is obtained. The principle of the main circuit, control method and protective circuit are described.

本文首先通过对传统激光电源中功率因数低、谐波电流大等缺点的分析，再结合半导体泵浦源的特性要求，提出了一种基于两级变换器的新型高性能半导体泵浦固体激光器电源。

The basic relationship between the the first half-wave peak value of transient current and the initial firing angles is found by means of analytical method.The practical method is put forward to determine the initial two-phase and the third phase firing angles with the limiting value and the space vector varying track of transient current.And then the subsequent series of firing angles with the even step are calculated by using the speed at the time of re-switching.The suppressive effect to the inrush current is verified with simulation and experiment of rapid soft re-switching control,by which the influence of different speed to rapid soft re-switching course is analyzed besides.3 To analyze the power loss for typical periodically variable running load and deeply study the energy-saving principle and control mode of the intermittent power supply approach. Futhermore,the novel integrated energy-saving control technique is developed on base of the intermittent power supply approach.

通过解析方法找到快速软投入初始触发角与瞬态电流首半波峰值加热板之间的基本关系，进而提出了由限流值和空间向量轨迹确定初始两相和第三相触发角的方法，并以固定步长均匀递减的方式由投入时转速计算出其它后续触发角；结合仿真和实验验证了快速软投入对冲击电流的抑制作用，并分析了不同转速下投入时对电源快速软投入过程的影响。3对典型周期性变工况负载特性进行能耗分析，深入研究断续供电节能机理和控制模式，并进一步发展了以断续供电为主的综合节能控制新技术。

The basic relationship between the the first half-wave peak value of transient current and the initial firing angles is found by means of analytical method.The practical method is put forward to determine the initial two-phase and the third phase firing angles with the limiting value and the space vector varying track of transient current.And then the subsequent series of firing angles with the even step are calculated by using the speed at the time of re-switching.The suppressive effect to the inrush current is verified with simulation and experiment of rapid soft re-switching control,by which the influence of different speed to rapid soft re-switching course is analyzed besides.3 To analyze the power loss for typical periodically variable running load and deeply study the energy-saving principle and control mode of the intermittent power supply approach. Futhermore,the novel integrated energy-saving control technique is developed on base of the intermittent power supply approach.

通过解析方法找到快速软投入初始触发角与瞬态电流首半波峰值之间的基本关系，进而提出了由限流值和空间向量轨迹确定初始两相和第三相触发角的方法，并以固定步长均匀递减的方式由投入时转速计算出其它后续触发角；结合仿真和实验验证了快速软投入对冲击电流的抑制作用，并分析了不同转速下投入时对电源快速软投入过程的影响。3对典型周期性变工况负载特性进行能耗分析，深入研究断续供电节能机理和控制模式，并进一步发展了以断续供电为主的综合节能控制新技术。

However, anti-plug memory after burning is not necessarily the end-of-life, the majority of normal use or because of how memory power supply and ground root, anti-plug is often because the local power supply is the ground and in the connected to pass, so as long as this power will be the role of a period of short-circuit ground wire from burning, and other ground and the chip has not been destroyed.

不过，内存条反插烧毁后并不是一定就报废了，多数还是能够正常使用的，这是因为内存条有多根供电和地线，反插时往往是因为局部的地线把电源正和地相连通，所以只要加电就会把这一段起短路作用的地线烧毁，而其他地线和芯片却没有被破坏。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。