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可编程逻辑 PCB抄板密技

第一步,拿到一块PCB,首先在纸上记录好所有元气件的型号,参数,以及位置,尤其是二极管,三机管的方向,IC缺口的方向。最好用数码相机拍两张元气件位置的照片。第二步,拆掉所有器件,并且将PAD孔里的锡去掉。用酒精将PCB清洗干净,然后放入扫描仪内,启动POHTOSHOP,用彩色方式将丝印面扫入,并打印出来备用。第三步,用 ...
https://www.eeworm.com/dl/kbcluoji/40341.html
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通信网络 MPI下三维FDTD并行运算的分析与实现

基于Message-Passing Interface ( MPI)的编程环境,以PML (Perfectly Matched Layer)为吸收边界条件,讨论了时域有限差分法FDTD的三维并行运算情况。通过一定的数值计算,定量地给出了MPI下FDTD并行算法中的网格数、进程数、分割方式三者之间的关系以及对计算效率的影响。 ...
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可编程逻辑 Nios II软件开发人员手册中的缓存和紧耦合存储器部分

        Nios II 软件开发人员手册中的缓存和紧耦合存储器部分 Nios® II embedded processor cores can contain instruction and data caches. This chapter discusses cache-related issues that you need to consider to guarantee that your program executes correctly on the ...
https://www.eeworm.com/dl/kbcluoji/39392.html
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matlab例程 外国人开发的电磁时域有限差分方法工具包 Electromagnetic Finite-Difference Time-Domain (EmFDTD) is a basic two-dimensio

外国人开发的电磁时域有限差分方法工具包 Electromagnetic Finite-Difference Time-Domain (EmFDTD) is a basic two-dimensional FDTD code developed at the School of Electrical Engineering, Sharif University of Technology. This code has been written based on the standard Yee s FDTD algorithm. Applicati ...
https://www.eeworm.com/dl/665/353892.html
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论文 WBG+Materials+for+Power+Electronics

stract With  global  drivers  such  as  better  energy consumption, energy efficiency and reduction of greenhouse gases, CO 2 emission reduction has become key in every layer of the value chain. Power Electronics has definitely a role to play in these thrilling challeng ...
https://www.eeworm.com/dl/522360.html
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仿真技术 16qam

16qam 随着现代通信技术的发展, 特别是移动通信技术高速发展, 频带利用率问题 越来越被人们关注。 在频谱资源非常有限的今天, 传统通信系统的容量已经不能 满足当前用户的要求。正交幅度调制 QAM(Quadrature Amplitude Modulation) 以其高频谱利用率、 高功率谱密度等优势, ...
https://www.eeworm.com/dl/512037.html
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技术资料 IGBT图解

le flows through MOS channel while Ih flows across PNP transistor Ih= a/(1-a) le, IE-le+lh=1/(1-a)' le Since IGBT has a long base PNP, a is mainly determined by ar si0 2ar= 1/cosh(1/La), La: ambipolar diff length a-0.5 (typical value)p MOSFET channel current (saturation), le=U"Cox"W(2"Lch)"(Vc-V ...
https://www.eeworm.com/dl/836047.html
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技术资料 单片机原理及应用实验教学设计与案例

针对单片机原理及应用课程具有实践性、应用性强的特点,因此实验项目的开设直接影响整个课程的教学质量,为增强学生的开发设计与实际动手能力、改善教学效果,课程教学采用“理实一体化”教学,实现理论与实践的紧密结合。实验项目采用递进式模式,即知识应用由浅入深、层层推进,硬件功能模块化、实验内容层次化。采用“树形结构 ...
https://www.eeworm.com/dl/898796.html
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VHDL/Verilog/EDA源码 VHDL数字钟

用vhdl实现数字钟 其一,具有时,分,秒计数显示功能,其中,要求以二十四小时循环及 时;   其二,具有清零,调节小时,分钟功能;   其三,具有整点报时功能,而且在整点报时的同时 LED 灯花样显示。 其一,具有时,分,秒计数显示功能,其中,要求以二十四小 ...
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matlab例程 In this demo, I use the EM algorithm with a Rauch-Tung-Striebel smoother and an M step, which I ve r

In this demo, I use the EM algorithm with a Rauch-Tung-Striebel smoother and an M step, which I ve recently derived, to train a two-layer perceptron, so as to classify medical data (kindly provided by Steve Roberts and Will Penny from EE, Imperial College). The data and simulations are described in: ...
https://www.eeworm.com/dl/665/284186.html
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