二:关于线宽和阻抗的计算(最好在layout前,找加工厂家给你提供数据) 我这里给出一个大概的: 四层板: 1:差分线 (差分做90欧姆,信号做50欧姆的阻抗) 9mil的线宽,两根线的距离8mil,线到铜皮的距离是21mil (线到铜皮的距离,根据线到基准面的距离的3倍)这个参数能做90欧姆的阻抗了. 2:单... ...
Quick Tutorial Basic Concepts Sample Code Cloud-side Data Openness Service Introduction Version Change History Getting Started Preparations Applying for the HUAWEI ID Service Applying for Health Service Kit Developing Your App Authentication Canceling Authorization Open Authorization in Huawe...
layout布局布线注意归纳 :一个过孔主要由两个部分组成,一是中间的钻孔(drill hole),二是钻孔周围的焊盘区。这两部分的尺寸大小决定了过孔的大小。在高速、高密度的PCB设计时,设计者总是希望过孔越小越好,这样板上可以...37mil; 单板密度较高时使用的过孔尺寸为:孔直径10mil,焊盘直径22mil或20mil,反焊盘直径34...
Design a thumb-stopping social ad for the Flairstyle brand. In the first tutorial of the series, create perfectly sized graphics. Start with core concepts This video introduces you to the concepts of setting up the working area and adding graphics for a social ad. What you'll learn Set up...
Figure 4: Bond Finger Design rule layout showing critical dimensions. Typical bondfinger length is ...
8 Beautiful Pre-defined Layouts Ad-Sense Theme Setup Tutorial There are more than 700 million ad blocking devices in the world and that includes mobile phones, tablets and computers. That’s as if 10% of the world’s population views your websitewithout ever seeing any ads. That is okay ...
Design-Time Enhancements for VB 2005 The Essentials for Programming in Visual Basic .NET Intrinsyc - Windows CE .NET Driver Development Chat Transcripts Windows Phone 7 in 7: SIP Layout Windows Phone | "How Do I?" Videos | MSDN Limited Distribution Exchange APIs for Development Partners Harnessin...
Auto Generate Ads Auto generate ads using SKUs or UPCs Edit & Design Ads Choose from range of attractive templates and themes Print in Any Layout Print single or multiple ads using pre designed layouts Print Signs In All Different Sizes & Layouts With This Easy Software Choose from one of...
PCBDesign Tutorial 英文版 经典的PCB设计入门书籍之一,页数不多,都是精华。即使PCB设计老手,也可以参考。 varsoo2019-07-11 13:06:04 pcb四层板是哪四层,pcb四层板简介 一般pcb四层板,如下安排:顶层和底层为信号层,中间2层分别为电源层和地层。电源层与地线层在中间可以起到隔离作用,减少干扰的作用。
对Layout工程师来讲,非常有益。下图是几种封装的比较: 2 01005封装的缺点 EMS工厂的SMT机器虽然支持01005器件,但需要购买专用的吸嘴,一般的EMS厂... AD20使用之用封装创建向导创建封装 用封装创建向导创建封装 1、需要安装插件 2、打开封装创建向导 3、填入数据 4、选择该封装放置到哪个库中 5、最后看一下生成...