自动干手器设计

自动干手器的电动机自动运转的电路组芯片往往比较多,管脚与管脚之间的焊接常常会出现虚焊和脱焊现象,从而造成电路无法实现其功能。文章主要介绍了用单片机设计控制电动机自动运转的电路组成、设计原理、设计思路及其功能。     

二极管的特性与应用

半导体二极管在许多的电路中起着重要的作用,     

C波段双栅砷化镓场效应管三倍频器的研制

本文介绍了将双栅GaAs MESFET应用在三倍频器上的工作原理,设计思想,实验研制及在C波段的实验结果.这种三倍频器具有一定的倍频增益.目前国内还未见到同类产品.     

风能并网电能互补LED路灯照明系统

文章介绍了一种不使用蓄电池的风能并网电能互补LED路灯照明系统。白天风能并网发电;夜晚风能发电供路灯使用,并由电网电源补充夜晚风能发电的不足部分;系统无储能蓄电池,路灯使用LED作光源,可广泛应用于公园广场景点市郊公路住宅小区等的照明。     

含胺基聚芴类共轭高分子PFN及其衍生物作为发光二极管电子注入层的研究进展

共轭聚合物[9,9-二辛基芴-9,9-双（N,N-二甲基胺丙基）芴]（PFN）及其电解质衍生物具有与高功函数金属形成有效电子注入的能力,可以用作电子注入层与高功函数金属（如Al、Au等）组成复合阴极,应用在聚合物发光二极管（PLED）中。这类含新型复合阴极的PLED器件具有与目前广泛应用的低功函数金属（如Ba、Ca等）器件相同甚至更高的发光效率。该类电子注入型共轭聚合物及其前驱体只溶解于水、醇等极性溶剂中,而不溶于发光聚合物所易溶的非极性溶剂如甲苯、二甲苯或导电胶所含溶剂,这种特殊的性质可以保证电子注入层与发光层、电子注入层与导电胶层之间在印刷时不会发生互溶而被侵蚀的现象,使得利用高功函数金属的导电胶通过涂覆方式制备PLED的阴极并实现全印刷制造发光器件成为可能。目前,此类高分子材料合成及器件化已成为有机电子学研究的热点之一。本研究论述了国内外在以实现全印刷PLED为目标,以PFN及其衍生物作为电子注入材料方面的研究进展。     

Using Malmquist index to select the strategic partners in vertical integration: the case of Taiwan LED supply chain

In recent years, green technology efficiency has been one of the most interesting issues when referring to energy saving. The light-emitting diode (LED) is one of the competitive industries on green technology in Taiwan. The objective of this article is to select the vertical strategic partners of the 22 LED companies through investigating performance of integration. The Malmquist productivity index (MPI) is used to evaluate the average efficiency change from 2011 to 2015. The empirical results show that the productivity change was influenced by both catch-up effects and frontier effects. For upstream companies, the MPI of Tekcore is superior to others because it maintained technical efficiency and technological change. For downstream companies, most of them are performed well in technical efficiency than technological change. This article helps LED manufacturers select the appropriate strategic partners to achieve competitive advantage.     

大功率半导体激光器模拟负载及老化系统的设计

目前,在半导体激光器领域,国内外厂商及研究机构更多的关注于千瓦级半导体激光器的结构研究及系统应用研究。随着千瓦级半导体激光器的广泛应用,科研与生产都需要尽快解决高效率的驱动与控制系统的模拟测试与老化问题。在我公司的实际生产中,对应每一种型号的激光器驱动系统都制作了一套模拟LD巴条的二极管阵列老化测试装置。避免了采用真实LD巴条带来的风险。但这种装置通用性差,且不适合进行长时间的老化测试工作。为了解决通用性差和长时间老化负载过热的问题,进而设计制造了一套通用性好、大功率、循环水冷的老化测试系统。解决了千瓦级激光器驱动系统的大批量老化测试问题。     

7GHz频段单栅GaAs场效应管微波混频器

本文介绍了单栅G_aA_s MESFET微波混频器的工作原理和设计方法,给出了实际电路和测试结果.在6.7～7.2GHz频带内获得3.8±0.4dB转换增益,单边带噪声系数为7.2±0.3dB.     

A hybrid selection model for emerging technology

Technology selection, which influences the advantages of an enterprise or a country, is a multi-criteria decision issue that can be improved by integrating different methods. In addition, it is more and more difficult to identify the right technologies because the technologies are increasing in number and complexity. This study proposes a technology selection process integrating fuzzy Delphi method, analytic hierarchy process (AHP), and patent co-citation approach (PCA) for technology selection. The former effectively gathers experts' judgments toward technology selection criteria and conducts the fuzziness existing in their responses. The analytic hierarchy process has the strength of identifying criteria and obtaining their relationship and their weights. The patent co-citation approach identifies the major R&D fields of a specific technology from patent data. Through this proposed process, the key technology fields can be identified in the end. The organic light emitting diode (OLED) technology in Taiwan is used to be an example to illustrate the proposed technology selection process.     

LED显示屏的原理及其无线寻呼通信方法

讨论了发光二极管(LED)字符显示屏的基本结构和工作原理，并在剖析上位机与显示屏的通信协议的基础上，实现了一种实用的无线寻呼通信方法。