电源

The company is under the jurisdiction of 843 state-run factories of Industry Corporation of weapons (the Qin chuan of the North of Xi'an now ), have cooperated with unit experts and technical staff such as Zhejiang University , Tsing-Hua University , Xi'an Communications University ,etc. for many years, in absorb , digest Company and AG reaction of Company , BBC of Germany , heat power at the technological foundation, develop , help integrated circuit control and digital control circuit brilliant floodgate in charge of the power of intermediate frequency, apply various smelting , being completely hot , quenching metal to , return bend and reaction heat field of brazing, make reaction heating technology of our company in in a leading position competence at home.

公司隶属于兵器工业总公司国营843厂（现为西安北方秦川有限公司），多年来同浙江大学、清华大学、西安交通大学等单位的专家及技术人员合作，在吸收消化德国BBC公司与AG公司的感应加热电源技术基础上，研制成全集成电路控制及数字控制线路晶闸管中频电源，应用于各种金属的熔炼、透热、淬火、弯管及感应加热钎焊领域，使我公司的感应加热技术在国内处于领先水平。

In order to increase the occupating coefficient and reliability of digital experimental box,we improve its power supply by designing a simple,reliable overcurrent protecting circuit base on the analysis of its working principle .

设计了一个简单可靠的电源过流保护电路，分析了过流保护电路的工作原理，在此基础上改进了数字电路实验箱中稳压电源电路，提高了仪器的使用效率，增强了可靠性。

Improvement in efficiency and thermal analysis on LED drivers are particularly important in improving its reliability.

提高LED驱动电源的效率和进行变换器的热分析，对提高LED驱动电源的可靠性具有十分重要的意义。

Moreover, the electromagnetic flux density and meniscus height increase in the form of chequerboard with increasing of slit number. The numerical results can exactly illuminate some experimental phenomena, and enrich the theoretical foundation of soft-contact continuous casting technology. In practice, a softcontact mold with slit number of 16 or 24 is recommended, the suggested frequency is around 20kHz, and the slit width is about 1mm.

结果表明：钢液对结晶器内的电磁场分布有很大影响；发现了磁感应强度和弯月面高度随电源频率增加而增大的频率范围、磁感应强度和弯月面高度随切缝数目增加呈&锯齿状&增大的规律；研究结果合理地解释了一些实验现象，完善了软接触结晶器电磁连铸技术的理论基础；建议在实际应用中采用分瓣数为16或24分瓣数的结晶器，电源频率应控制在20kHz左右，切缝宽度应控制在1mm左右。

This article mainly introduces the advantage of synchronous multi-phase DC/DC converter in decreasing ripple current and increasing efficiency and gives result of simulation and practice.

像这样低电压和大电流的电源主要存在两个问题：①由于输出电压极低，很难提高电源效率；②由于负载电阻极低，若采用传统方式

The system consists of a permanent magnet synchronous generator and a converter/regulator with a wide range of the input voltage. This paper presents a model of the converter/regulator by using Matlab tool.

为了保证飞行安全，飞行控制系统专用电源系统均采用多余度供电系统，造成飞机电源系统和配电系统非常复杂，供电子系统较多。

The whole system, which is powered by a single 5V power, supplies steady core voltage (1.8V) and I/O voltage (3.3V) with high-efficiency synchronous step-down dc/dc converter TPS54314 and TPS54316, presents a power supply sequencing solution for dual supply voltage DSPs and includes a supervisor on the power supplies and reset circuit in order to make the system more stable and efficient.

整个供电系统采用单一的5V电源供电，用高效率的同步电压转换芯片TPS54314和TPS54316芯片分别产生TMS320C6711B DSPs的内核电压（1.8V）和周边I/O接口电压(3.3V)，同时巧妙地解决了两种供电的顺序问题，并增设了电源监控和复位电路，确保供电系统稳定、高效地工作。

Based on medium frequency and high power inverter, one digital control system of multi-cell-cascaded inverter power supply is studied in detail in this paper.

本文针对中频大功率逆变电源，对多单元串联逆变电源的数字化控制系统进行了研究。

To meet the requirements for high performance of medium frequency inverter in special applications,a hybrid control scheme based on repetitive control and PI control is proposed.

针对中频逆变电源的特殊应用领域和对其较高的性能要求，提出了一种基于重复控制和PI控制的复合控制策略，并建立了中频逆变电源的数学模型，详细分析了重复控制系统的原理和结构，重点阐述了重复控制系统中的重复控制发生器和补偿器的设计方法，最后建立了该复合控制的系统框图。

In addition, many vendors of software has its own characteristics, such as the IBM-assisted procedures for the network configuration Access Connections, power management software Battery MaxiMiser, Sony power management using PowerPanel, DV editing software acquisition Movie Shaker, browser cool picture Visual Flow, TOSHIBA can deploy the system and hardware settings, password settings, and energy control procedures, such as machine control panel, these features give users the software is not only easy to use, but also a greater extent to help users use the good hands of the machine, thereby effective performance of the original machine, of course, should be installed.

此外，许多厂商都有自己的特色软件，如 IBM 的网络配置辅助程序 Access Connections 、电源管理软件 Battery MaxiMiser ， Sony 电源管理用的 PowerPanel 、 DV 采集编辑软件 Movie Shaker 、超酷的图片浏览器 Visual Flow ，以及 TOSHIBA 可以调配系统硬件设置、密码设置和节能控制的整机控制台程序等，这些特色软件不仅能给用户带来使用上的便捷，还能帮助用户更大限度地使用好手中的机器，从而有效发挥出机器原有的效能，当然值得安装使用。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。