电源频率

The magnetic flux density and the stirring intensity are stronger when field frequency is 5Hz than lOHz and the depth of melt surface burble comes bigger when power goes greater.

在相同电源功率下，f=5Hz的磁感应强度较f=10Hz大，电源电流相同时f=5Hz较f=10Hz下的搅拌强度大；电源功率越大，磁感应强度越大，磁场频率一定时，施加功率越大，金属液面漩涡深度越大。

This can also be divided into two categories: one is to discuss the influence of power factor by way of dividing power circuit into capacitive and emotional under the circumstance of unchangeable voltage and frequency of output power, and the other is discussed the influence from voltage and frequency of power to power factor with the situation of constant component parameters.

具体又分为两种情况：一种是在电源的输出电压和频率都不变的条件下，把电路分为容性和感性，讨论了元件参数对功率因数的影响，另一种是讨论了在元件参数不变的条件下，电源的频率和电压对功率因数的影响。

A power ultrasonic supply ,which can realize zero phase difference frequency tracing and fixedness of output power,is presented in this paper.

本文介绍了一种具有无相差频率自动跟踪和输出功率恒定功能的功率超声电源，此电源采用集成锁相环来实现无相差自动频率跟踪，采用 PWM方式控制 BUCK电路的斩波，达到恒功率及功率可调的目的。

Dynamic experiments of domestic sewage treated by electrocoagulation process with triangle-wave power, sine wave power and full-wave rectifier power, which had the different power waveform and waveform frequency, were studied. And the removal characteristics of organic pollutants were studied.

采用三角形波电源、正弦波电源、全波整流电源进行动态实验，研究采用不同电源波形和波形频率电源的电凝聚对处理生活污水的影响，以及对有机污染物的去除特性。

The dynamical characteristics of a low voltage MicroGrid from grid-connected mode to islanded mode with different distributed generation configuration schemes are analyzed by using simulation method,and the corresponding changing laws of each DG's power,voltage and frequency of MicroGrid are obtained.

通过算例仿真研究了不同分布式电源配置方案下低压微网从并网模式向孤网模式转换的动态运行特性，获得了分布式电源的功率、微网电压和频率的变化规律。如果选择微型燃气轮机作为微网的功率支撑手段，在微网从并网向孤网过渡过程中，系统频率波动较大，且部分分布式电源有可能在低频保护动作下与电网隔离，不利于微网的稳定运行；增加储能设备后，储能设备对于微网的稳定运行可发挥重要的作用。

A negative high voltage pulse power supply is used to stimulate DBD and generate excimer emission. Although the intensity of radiation emitted in dense filaments is higher, it has a lower conversion efficiency compared with a. c. power supply.

快脉冲高压电源在不同的脉冲频率下放电，其形貌分别为混合放电和丝状放电，其丝状放电激发辐射的相对效率要高于交流电源，放电丝在介质表面的斑图与交流电源所产生的斑图有明显的差别。

The mathematical relation formula is derived from the train running speed,distance and the output voltage frequency of tacho generator.

推导了列车运行速度、走行距离与测速发电机输出电压频率的数学关系式，给出了利用CMOS数字集成电路和频率合成原理实现上述关系的电路框图，并对其速度接口电路、轮径输入方法及频率合成电路、分频电路和BCD比例乘法器电路、显示电路、基准频率发生电路、电源电路等作了分析与说明。

Mainly engaged in the project are: 1, lithium battery protection board, power type (power tools, electric vehicles, model aircraft) lithium battery protection board; 2, switching power supply, adapters, chargers; 3, high power audio, amplifier, communications power inverter power supply; 4, solar cells program, program charger, portable power supply; 5, special power supply / power supply, as well as smart power management system; 6, LED drivers, all kinds of high-frequency electronic circuit design, update problem-solving / Circuit Design and so on; Electronics 8514C has°load, four-channel Tektronix TDS2014B Oscilloscopes, Tektronix Current Probe, Power Instrument / high voltage tester, spectrum analyzer proposed, frequency meter, signal generator, the high and low temperature environment for the control room and other advanced equipment and a group of highly professional and well-motivated research in science and technology, design professionals; have the ability to achieve all-round, the perfect integration services.

主要经营项目有：1、锂电池保护板、动力类（电动工具、电动车、航模）类锂电池保护板；2、开关电源、适配器、充电器；3、大功率音响、功放、通讯电源、逆变电源；4、太阳能电池方案、充电器方案、便携电源；5、特种电源/智能电源以及电源管理系统；6、LED驱动，各种高频电子电路的设计，更新解难/电路设计等；公司拥有艾德克斯8514C电子负载、泰克TDS2014B四通道示波器、泰克电流探头、功率仪/高压测试仪、频谱分析议、频率计、信号发生器、高低温环境控制室等先进设备和一批专业素质高、干劲十足的科研技术、设计人才；有能力做到全方位、一体化的完美服务。

The objective of the present study was to recover silver and remove cyanide from silver-plating wastewater using the novel pulse-electrolysis technique.

利用脉冲电源从含氰含银电镀废水中回收银和去除氰，对比了脉冲电源与直流电源对含氰镀银废水的处理效果，系统研究了脉冲电源的电解电压、占空比和脉冲频率等参数对电能消耗、银回收率和除氰率的影响。

The saw tooth waveform was formed by a capacitor charging with a designed constant current source and didchanging though a MOSFET.

与传统的环路振荡器相比，此电路的优点是振荡频率精确、波形稳定，振荡频率在一定的电源电压范围内对电源电压变化不敏感。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。