Results 21 to 30 of about 1,580,758 (157)
Design of quaternary Schmitt circuits(四值施密特电路设计)
Zhejiang Daxue xuebao. Lixue ban, 2001 本文分析了四值施密特电路工作过程中的时序特征，导出了相应的特征方程，并利用时序电路的设计方法，提出两种四值施密特电路的设计方案.基于TTL技术设计的四值施密特电路已用PSPICE模拟证明了具有理想的施密特电路功能.讨论表明四值施密特电路的特征方程及电路的逻辑结构与对二值施密特电路及三值施密特电路讨论的结果相同，由此发现各种基的施密特电路具有共性.
WANGPeng-jun(汪鹏君) +2 more
doaj +1 more source
Parameters setup of AC CMOS gates(交流CMOS门电路参数的设定)
Zhejiang Daxue xuebao. Lixue ban, 2002 CMOS门电路的参数是对它本身物理特性的一种定量描述,对参数的设定是实际应用CMOS门电路的基础. 本文从理想参数出发归纳了直流CMOS门电路主要参数的设定思想并对各项参数进行了分析讨论.然后介绍了交流CMOS门电路的设计思想及结构与工作原理上的特点.在分析二类CMOS电路差异的基础上,本文采用类比的方法对交流CMOS电路的设定进行了研究.
LIUXiao(刘晓), WUXun-wei(吴训威)
doaj +1 more source
SET circuits design based on theory of transmission voltage-switches(基于传输电压开关理论的单栅极SET电路设计)
Zhejiang Daxue xuebao. Lixue ban, 2012 在分析了单电子晶体管(SET)的I-V特性后，通过对SET背景电荷的设置，使之具有类似PMOS或NMOS的电学特性；同时将传输电压开关理论引入到SET的电路设计中，并用单栅极SET实现了该理论的基本运算电路.随后以异或门和一位比较器为例，利用这些基本运算电路，进行了基于SET的开关级电路设计.最后，利用Pspice软件验证了所设计的电路逻辑功能正确，设计方法可行；电路的输入输出高低电平一致，具有良好的电压兼容性，易于级联.仿真结果表明，与基于互补结构设计的SET电路相比 ...
ZHANGZhuan(章专) +2 more
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Guangtongxin yanjiu, 1986 本文介绍一种适合140Mb/s数字光纤通信系统光发送机的实用化电路。在电路工作原理的论述中,着重对高速调制下激光器的电-光延时特性作了理论分析;对温控电路的精度进行了理论上的探讨。最后叙述了减少激光器在高速调制下的张驰振荡、自脉动及模式噪声的方法。
郑庆镒
doaj
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Li–O2 batteries garner widespread attention owing to their remarkable theoretical specific capacity. Nevertheless, the feasible implementation of the system is hindered by sluggish cathode reaction kinetics and poor anode stability. Herein, the carbon dots (CDs) with ‐OH, ‐NH2, and ‐COOH groups are synthesized and employed as electrolyte ...
Ying Li +9 more
wiley +1 more source
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Advanced metallic glasses, leveraging their ultrahigh strength, excellent corrosion resistance, superior soft magnetic properties and good biocompatibility, have gradually become indispensable strategic cornerstones in critical fields such as aerospace, electronic information and energy power. This unique combination of properties enables them
Yizhou Liu +11 more
wiley +1 more source
Gaoya dianqi, 2022 随着我国高压直流输电技术的不断发展，短路故障电流值也随之增加。针对直流电网中短路大电流开断这一难题，文中基于直流短路故障时断路器的工作原理研究，对短路电流采用先限流、再关断的方案，提出了一种利用限流电路进行两次限流的混合式断路器拓扑。同时，研究了限流电路参数的选取对断路器工作性能的影响，并对相关参数进行了优化。在仿真研究和理论分析的基础上，与没有第二次限流的断路器进行了比较。结果表明，该断路器可通过两次限流成功将电流限制住并在故障发生的5 ms内关断 ...
熊迪 +5 more
doaj
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT In electrocatalysis, traditional single‐atom catalysts (SACs) face challenges in achieving coordinated control of reaction pathways due to limitations such as single local energy levels and carrier recombination. By introducing an additional defect structure, it is possible to break the electronic structure symmetry, thereby activating SACs ...
Juanjuan Huo +8 more
wiley +1 more source
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Defect engineering has been widely demonstrated as an effective strategy for enhancing the activity of OER metal catalysts, among which the introduction of twin boundaries (TBs) has proven particularly efficient. However, single‐type defects offer limited performance enhancement.
Wentao Cai +11 more
wiley +1 more source
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Improving catalytic activity for volatile organic compounds (VOCs) oxidation and enhancing water‐tolerance stability remain challenging in practical applications. Herein, a composite catalyst integrating Pt/CoOx‐NiOx mesoporous nanorods (MNRs) with a phenyltriethoxysilane (PhTES)‐modified surface was fabricated via a facile route for toluene ...
Jiaqin He +13 more
wiley +1 more source