四温控点可编程温度监控器ADT14及其应用

多功能芯片ADT14既是一种输出逻辑电平控制信号的多点温度监视器，又是一种输出模拟电压信号的温度传感器，可广泛应用于各种嵌入控制系统中。本文介绍了ADT14的特点和应用电路等。     

四温控点可编程温度监控器ADT14及其应用

多功能芯片ADT14既是一种输出逻辑电平控制信号的多点温度监视器,又是一种输出模拟电压信号的温度传感器,可广泛应用于各种嵌入控制系统中.本文介绍了ADT14的特点和应用电路等.     

四温控点可编程温度监控器ADT14及其应用

多功能芯片ADT14既是一种输出逻辑电平控制信号的多点温度监视器,又是一种输出模拟电压信号的温度传感器,可广泛应用于各种嵌入控制系统中。本文介绍了ADT14的特点和应用电路等。     

四温控点监控器在TM-240塑封压机上的应用

多功能芯片ADT14既是一种输出逻辑电平控制信号的多点温度监控器,又是一种输出模拟电压信号的温度传感器,可广泛应用于各种嵌入控制系统中。介绍了ADT14的特点和在TM-240压机上的应用。     

可编程温度监控器ADT14及其应用

ADT14是一种可编程温度监控器电路 ,可广泛应用于各种嵌入控制系统中进行温度检测和控制 ,文章介绍了ADT14的特点和用ADT14设计的新型双温电子温控器     

节省能源的温度控制器

考虑到电费很高．用比例式温度控制器替换传统的开关温度控制通常能省电省钱。图1示出一种供家庭热水器用的廉价高效率时间比例式温度控制器。一块Analog Devices公司生产的ADT14型集成电路IC1．兼有温度传感器、四个设定点可编程模拟温度监视器和控制器三种功能。     

排除力偏心影响的光纤力传感器

本文介绍了一种光纤测力传感器，利用两根多模光纤束传输光信号，采用一种特殊的结构形式，能够有效地消除力偏心对传感器输出的影响，另外，还介绍了温度补偿电路，包括光源驱动电路及光信号接收电路。     

毫米波无源探测的信号仿真和特征研究

研究了在一种特定工作模式下,8mm无源探测器探测机场跑道时的输出信号.推导出了辐射计天线波束中心没有建立在坐标轴上情况下的天线温度的计算表达式,利用这一结果对输出信号进行了仿真和信号特征分析.     

PT100铂电阻温度变送器

本文回顾了通用温度传感器的主要特性，重点介绍热敏电阻PT100变送器。并提供了一种简单的方法对PT100输出信号进行线性化处理。     

毫米波辐射计的波形模拟与目标识别

在毫米波辐射计工作原理的基础上，建立了辐射计探测金属目标输出信号的模型。根据波形特点提出一种目标识别方案，给出仿真结果，并讨论了识别方案的计算量问题。     

业务识别与控制技术及其测试评估

在传统Intemet网络逐步向多业务网络演进的过程中,监管者、运营商以及最终用户都对网络的可管可控能力提出了差异化的要求,业务识别与控制技术应运而生.作为IP领域的一项热点技术,该技术得到了广泛的关注并取得了迅猛的发展.在考虑来自不同主体需求的基础上,介绍了业务识别与控制技术.此外,还结合技术发展以及网络部署等要求,着重分析了该技术的测试评估方法及测试内容.     

Engineering education and industrial research and development-thepromise and the reality

The author observes that the social fabric of engineering, the support infrastructure of the profession, and the political and economic systems of the world are undergoing shifts that affect what engineering is, how it is accomplished, and what it should do. He asks what these changes mean in terms of the educational system and explores a few of these issues that lie between academia and the industrial environment beyond. He discusses the engineering curriculum as seen from industry, the role of continuing education, research in academia     

"电路原理"与"信号与系统"课程的整合与优化

科学技术迅速发展,新兴学料不断增加,知识总量不断增长,迫使本科教育不断向着基础化方向发展,基础课程教学在本科教育中的地位愈来愈高。计算机技术的广泛应用,离散信号与系统的基础知识已是电气类各专业的必要的教学内容。因此基础课程要从根本上整体优化课程结构。本文提出了电气类专业“电路原理”与“信号与系统”课程教学改革方案,将两门课程教学内容进行整合与优化,并在实际教学过程中进行了教学试验,缩短了教学时间,提高了教学质量。     

箔条和箔片的性能特性及其应用和趋势

从箔条和箔片用于干扰雷达测和扰乱、迷惑、转移或者引诱进攻出发,详细论述箔条、箔条云及箔片、箔片云的雷达散射截面、带度、平移速度、下降速度及转动等情况,空间和时间我、水平和垂直极化性能、多普勒频移效应以及频谱展宽特性等,通过箔条和箔片有效成火控雷达实例,提出对抗火控雷达的三个重要因素及其采取的对策。     

光交叉连接和光插分复用技术及其应用

目前所谓的全光网络一般指基于DWDM传送技术的光传送网络（OTN）。由于OTN的节点采用OADM和OXC技术,为解决目前点到点的DWDM技术在应用中不能实现灵活组网和当网络失效时不能有效进行保护的问题提供了一种解决方法,使得OTN具有传输容量大、组网灵活、网络具有可扩展性和可重构性、易于升级等特点,可透明传输具有代码格式的不同速率等级的用户数字信号,能够同时适应用户信号种类用服务种类不断增长的需求。     

Thin film deposition and microelectronic and optoelectronic devicefabrication and characterization in monocrystalline alpha and betasilicon carbide

The deposition of silicon carbide thin films and the associated technologies of impurity incorporation, etching, surface chemistry, and electrical contacts for fabrication of solid-state devices capable of operation at temperatures to 925 K are addressed. The results of several research programs in the United States, Japan and the Soviet Union, and the remaining challenges related to the development of silicon carbide for microelectronics are presented and discussed. It is concluded that the combination of α-SiC on α-SiC appears especially viable for device fabrication. In addition, considerable progress in the understanding of the surface science, ohmic and Schottky contacts, and dry etching have recently been made. The combination of these advances has allowed continual improvement in Schottky diode p-n junction, MESFET, MOSFET, HBT, and LED devices     

Issues and trends in RF and mixed signal integration and partitioning

Over the last 40 years in the semiconductor industry, one of the most reliable truths has been that "thepath forward is through integration." Moore's law and its various derivatives and cousins have illustrated how greater integration has provided tremendous benefits in cost, power, size, and performance. While shrinking process lithography has been a critical enabler of this trend, we should remember that tremendous innovation in device technology, circuits, system architecture, computer aided design (CAD), packaging, and many other areas have been necessary as well. The exponential integration phenomenon has not been limited to memory and microprocessors: mixed signal and radio functions have also seen striking advances in integration over the last 20 years, from cell phones to wireless LANs, integrated "systemon-a-chip" (SOC) transceivers have become prevalent in the circuits conferences, journals, and - in some applications - have even made it into commercial mainstream products.     

日本广播电视天线及其相关技术的发展与探讨

在日本电视广播的发展过程中,电视信号技术、电视节目转播技术、发射机技术以及天线技术等发挥了不可替代的作用。这些技术在长达60多年的模拟电视广播中被大量的开发、使用,尤其是射频相关技术为日后地面数字电视广播的发展提供了重要参考。主要介绍了日本电视广播中该相关技术的发展,并进行了讨论。     

Wireless and cellular architecture and services

Cellular architecture partitioning can improve the performance of telecommunications systems. The model proposed by the author allows for changing the cell size for different services and the number of users. The cell size that will ensure the best possible performance and quality of service can be derived by the model. The main task of a telecommunication system is call processing. This includes identifying incoming calls, establishing a communication path for the duration of the connection, and disconnecting the call after the conversation has ended. Call processing uses different components of the software architecture and involves processes and messages performing different functions and accessing various resources. In addition, the system requires administration and maintenance that also involves processes using different resources