隔离器

With strong technical force, high-quality staff team and the courage to open up the spirit of technology, Anton has developed a series of international advanced level of intelligent instruments and meters, the main products are: LU-900M Series can adjust the temperature control device, LU-R / C Series process control logger, LU-190 Series Intelligent Power Detector, LU-C Series pressure transmitter, LU-A/B/AB Series°¤with electrical isolation, LU-50 Series Intelligent Flow Totalizer Miriam count, JKH phase-shifting flip-flop, DP series digital current and voltage table, a type of temperature control cabinet, ANTHONE DCS Distributed Control System.

凭借雄厚的技术力量、高素质的员工队伍和勇于开拓技术的精神，安东公司开发出了一系列具有国际先进水平的智能仪器仪表，主要产品有：LU-900M系列只能温度控制调节仪、LU-R/C系列过程控制记录仪、LU-190系列智能电力检测仪、LU-C系列压力变送器、LU-A/B/AB系列隔离安全栅配电器、LU-50系列智能流量积算仪、JKH移相触发器、DP系列数字电流电压表、个类型温度控制柜、ANTHONE DCS集散控制系统。

This paper attempts to associate PFC technology with Quasi-Resonant DC/DC Converter and Synchronous Rectifier technology, to work out a novel switching power supply with higher efficiency and low contamination, which both achieved high power factor, improved effecting on electrical network and ensured high efficiency, furthermore, it is easy to be realized and controlled in circuit.

本文首先阐述了开关电源、功率因数校正技术和同步整流技术的发展及现状，对DC/DC变换的拓扑结构进行了选择，确定了带有隔离的准谐振(Quasi-Resonant)反激型电路，可以有效地降低损耗；接着本文对几种常见的PFC拓扑电路进行分析对比，从中选择了BOOST型电路，对工作在临界状况下的电路进行了分析，采用跟随输入电压的升压变换新技术，减小了电感体积，同时降低了开关管的电压应力，既简单又有效地实现了功率因数校正，并发现此技术值得推广；由于反激型变换器的效率一般都较低，所以本文在传统同步整流技术基础上对其加以改进，设计出一种新颖、高效的同步整流方案。

Diplexers, a sort of three-port filter, can separate different band of frequency, and are the key component in the RF communication system.

双工器是一种三端口滤波器，起到分频和隔离的作用，是射频通信中常用的关键性器件。

In low voltage threephase AC circuits, the breakers, starters and knifeblade fuses with different number of poles were used for electrical isolation, shortcircuit, overload and groundfault protection.

在低压交流三相线路中，往往需要根据负荷情况或线路的保护要求设置不同极数的断路器、起动器或刀熔开关，以用作线路的电气隔离、短路保护、过负荷保护、接地故障保护、防电击。

We will see more and more activist government policies that distinguish economic activities according to the nationality of the actors.

我们将看到越来越多激进的政府政策，这些政策根据企业的国籍来区分经济活动。

If we can prove the independence of an axiomatic system, then we can guarantee the conciseness of this system, ie.

如果能够证明某个一阶谓词系统的独立性，那么就能够保证该系统的建立是精炼的，即没有任何一条公理或推理规则是多余的。