开关线

The change and the distribution of magnetic field in magnetic core are described with system state equations of magnetic switch and Jiles-Atherton model so that whole operation of magnetic switch and its application circuit can be obtained, meanwhile total loss, eddy current loss and magnetic hysteresis loss of magnetic switch can be calculated.

利用磁开关的系统状态方程和Jiles-Atherton磁滞回线模型描述磁芯中磁场的变化和分布，从而得到磁开关及其应用电路的整体工作特性，同时计算出磁开关的总损耗、涡流损耗和磁滞损耗。

A resistor is connected between the output end of the live wire and the output end of the earth wire, another resistor is connected between the output end of the null line and the input end of the earth wire, a neon lamp in a photoelectric coupling switch is connected at the two ends of the earth wire switch in parallel after being connected with the resistors in series, one end of a light sensitive resistor in the photoelectric coupling switch GR2 is connected with the anode DC+ of an integrated circuit IC power in the creepage protector, the other end of the light sensitive resistor is connected with the anode of a diode D3, the cathode of the diode D3 is connected with the triggering pole of the silicon-controlled rectifier SCR in the creepage protector, the neon lamp and the light sensitive resistor are positioned into a dark box, and a small hole which avoids the light sensitive resistor is formed on the dark box.

一种防止地线触点未导通的全能安全插头，包括各带开关的地、零、相三线接线和由零序互感器、脱扣器、放大器、整流器、试验回路和可控硅组成的漏电保护器，所述的火线输出端、地线输出端间连接电阻，所述的零线输出端、地线输入端间串接电阻，光电耦合开关内的氖灯与电阻串联后并联在地线开关两端，光电耦合开关GR2内光敏电阻的一端与漏电保护器内的集成电路IC电源正极DC＋连接、光敏电阻的另一端与二极管D3的正极连接，二极管D3的负极与漏电保护器内的可控硅SCR触发极连接，氖灯和光敏电阻置于暗箱中，暗箱上开一避开光敏电阻的小孔。

But disconnect the load and the output correctly, in the time, I fail to understand why it suddenly occurred to power does not output voltage may also be due to eircuit the power protection, since switching power supply does not have the problem, according to the circuit diagram check switching power supply external power supply module one by one, if the hinge-counter, discovered its signal line wrap wire close to counter one end of the triadha into the signal lines, causing a short circuit input line.

可是断开负载，其输出正常，在百思不得其解之时，笔者突然想到电源不能正常输出电压也有可能是由于负载短路使电源保护造成的，既然开关电源本身没有问题，按照电路图检查开关电源外围的供电模块逐一排查，当检查到折页计数器时，无意中发现其信号线外缠绕的钢丝线接近计数器的一端扎进了信号线中，造成输入线短路。

In this paper, a detailed study on the measurement of the frequency characteristics of EMI coupling paths, the model of EMI coupling paths and the equivalent EMI noise model of an off-line PWM switched mode power supply is introduced quantitatively and qualitatively.

本文以一台小功率离线式PWM开关电源为例，对开关电源传导电磁干扰耦合通道的特性测量、电路模型的建立和分析、开关电源对电网等效电磁干扰模型的建立进行了研究。

5 The requirement in 22.4 applies to a switch in the "off" position or any other setting in which the element is not heated, and also to a through-cord switch or a plug in which a switch is incorporated.

22.5在22.4中的要求应用到开关的"OFF"档位或其它不加热的文件位，及通线开关或开关插头。

Possessing a batch of researchers, developers and technicians in the field of electric control, Zhenhuan could provide technological support in the production of transformer and ballast for customers, and its main products are as follows: belt-winder, loop wire winder, winder for special use in large torsional force,in high frequency power supply, in filter, and in front-monopodium, high-speed biaxial and four-axis winder, encapsulated machine, soldering machine, ancillary equipment, etc.

工厂拥有业界资深的研发与电控技术力量，能同时向客户提供变压器、镇流器制作的技术支持；主营业务为皮带式及边滑、线滑式环型线圈绕线机、镇流器用大扭力绕线机、高频开关电源专用绕线机、滤波器专用绕线机、正面单轴/双轴四轴高速绕线机及包胶带机、焊锡机等周边设备。

The average linewidth enhancement factor and the component effective linewidth enhancement factor are introduced for the performance analysis of interferometer all optical switches based on cross phase modulation of SOAs.

二、合理地选择和设定全光开关的性能参量是评价全光开关在OTDM解复用子系统中解复用性能的首要任务，本文选择全光开关中SOA平均线宽增强因子和器件有效线宽增强因子分析了基于SOA相位调制效应的干涉仪全光开关的性能。

At the instrumentation products, are the United States Dwyer, Antunes Controls, AutoTran, Lighthouse, Sweden SenseAir, Switzerland BELIMO, Germany Beck's authorized dealers, etc., these products include pressure switch / pressure switch, pressure change delivery, and pressure gauge / pressure table, temperature / humidity / dewpoint sensors, liquid level, flow meters, flow switches and transmitters, carbon dioxide, carbon monoxide sensors, airborne particle counter and so on, are widely used in HVAC , air-conditioning, chip manufacturing, semiconductor, food, pharmaceutical, bio-engineering, intelligent buildings, power plants, chemical industry, water treatment, environmental monitoring, industrial manufacturing and other fields, while the company is gradually taking shape self-developed product line.

在仪器仪表产品方面，是美国Dwyer、 Antunes Controls、AutoTran、Lighthouse、瑞典SenseAir、瑞士BELIMO、德国Beck等公司的授权代理商，这些产品包括压力开关/压差开关、差压变送器、压力表/压差表、温度/湿度/露点传感器、液位、流量计、流量开关及变送器、二氧化碳、一氧化碳传感器，尘埃粒子计数器等，广泛用于暖通、空调、芯片制造、半导体、食品、制药、生物工程、智能楼宇、电厂、化工、水处理、环境监测、工业制造等领域，同时公司正在逐步形成自主开发的产品线。

Power system ; HVDC power transmission ; Ground return ; Metal return ; Ground return transfer switch; Metal return transfer breaker

电力系统；直流输电；大地回线；金属回线；大地回线转换开关；金属回线转换开关

The switch static attribute includes information as the switch type and line number, input and output standard and ID.

开关静态属性含开关类型和线数、输入输出线规格和ID等信息。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。