<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[pointer_lu的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/pointer_lu</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; pointer_lu]]></copyright><item><title><![CDATA[4层板到12层板层叠设计案例]]></title><link>https://blog.youkuaiyun.com/pointer_lu/article/details/102990836</link><guid>https://blog.youkuaiyun.com/pointer_lu/article/details/102990836</guid><author>pointer_lu</author><pubDate>Sat, 09 Nov 2019 19:44:29 +0800</pubDate><description><![CDATA[http://www.eda365.com/forum.php?mod=viewthread&amp;tid=176881&amp;page=1&amp;_dsign=da547490
]]></description><category></category></item><item><title><![CDATA[MP2481DH背光IC过压保护设置问题]]></title><link>https://blog.youkuaiyun.com/pointer_lu/article/details/98846234</link><guid>https://blog.youkuaiyun.com/pointer_lu/article/details/98846234</guid><author>pointer_lu</author><pubDate>Thu, 08 Aug 2019 09:38:19 +0800</pubDate><description><![CDATA[现象：

夏普的屏可以点亮，但是君创的屏点不亮

分析：过压保护了，具体还没分析，以后再看数据手册

解决：如下电阻改为300K,可同时兼容两款屏


...]]></description><category></category></item><item><title><![CDATA[LM5118 DC-DC电源降压芯片带载能力不够问题]]></title><link>https://blog.youkuaiyun.com/pointer_lu/article/details/98514371</link><guid>https://blog.youkuaiyun.com/pointer_lu/article/details/98514371</guid><author>pointer_lu</author><pubDate>Mon, 05 Aug 2019 20:18:55 +0800</pubDate><description><![CDATA[1、现象：

主机系统带载到2A时，系统反复重启

2、分析：

示波器测量VCC-5V, 稳压源一显示到2A，VCC-5V就会掉到0V，把如下二极管断开，万用表测量电流到3.7A就是掉下



3、解决

查规格书可知电流检测电阻的计算，原来为0.03R,按此计算，此芯片最大带载为3A，
































...]]></description><category></category></item><item><title><![CDATA[orCAD原理图库添加封装属性(调用库元件便于导BOM)]]></title><link>https://blog.youkuaiyun.com/pointer_lu/article/details/96359303</link><guid>https://blog.youkuaiyun.com/pointer_lu/article/details/96359303</guid><author>pointer_lu</author><pubDate>Wed, 17 Jul 2019 21:08:59 +0800</pubDate><description><![CDATA[一、参考https://wenku.baidu.com/view/fa7e22b48e9951e79b8927ca.html

UPD文件格式：



分开元件格式：把每一部分都写上



二、导入如上UPD文件，还没有办法把封装信息添加进来，查看如下

Option--&gt;Packge Properties, 如下红框证明是没有把封装添加进来的



解决方法：

(1)导出属性如下



...]]></description><category></category></item><item><title><![CDATA[I2C总线3.3V与5V双向电平转换电路]]></title><link>https://blog.youkuaiyun.com/pointer_lu/article/details/95450776</link><guid>https://blog.youkuaiyun.com/pointer_lu/article/details/95450776</guid><author>pointer_lu</author><pubDate>Thu, 11 Jul 2019 09:57:38 +0800</pubDate><description><![CDATA[https://www.jichudianlu.com/archives/439
]]></description><category></category></item><item><title><![CDATA[cadence Orcad分裂元件自动重新编号失败(秒解)]]></title><link>https://blog.youkuaiyun.com/pointer_lu/article/details/94434535</link><guid>https://blog.youkuaiyun.com/pointer_lu/article/details/94434535</guid><author>pointer_lu</author><pubDate>Tue, 02 Jul 2019 10:56:30 +0800</pubDate><description><![CDATA[https://blog.youkuaiyun.com/dgyilang/article/details/89707306
]]></description><category></category></item><item><title><![CDATA[CAD水平或垂直镜像]]></title><link>https://blog.youkuaiyun.com/pointer_lu/article/details/85179939</link><guid>https://blog.youkuaiyun.com/pointer_lu/article/details/85179939</guid><author>pointer_lu</author><pubDate>Sat, 22 Dec 2018 00:03:14 +0800</pubDate><description><![CDATA[待续！]]></description><category></category></item><item><title><![CDATA[Altium Designer 17 安装破解版详细教程]]></title><link>https://blog.youkuaiyun.com/pointer_lu/article/details/85031327</link><guid>https://blog.youkuaiyun.com/pointer_lu/article/details/85031327</guid><author>pointer_lu</author><pubDate>Sun, 16 Dec 2018 12:14:00 +0800</pubDate><description><![CDATA[https://blog.youkuaiyun.com/weixin_42717711/article/details/81315695?tdsourcetag=s_pcqq_aiomsg]]></description><category></category></item><item><title><![CDATA[allegro快速设置栅格点方法]]></title><link>https://blog.youkuaiyun.com/pointer_lu/article/details/84451986</link><guid>https://blog.youkuaiyun.com/pointer_lu/article/details/84451986</guid><author>pointer_lu</author><pubDate>Sat, 24 Nov 2018 19:36:14 +0800</pubDate><description><![CDATA[http://m.elecfans.com/article/631649.html]]></description><category></category></item><item><title><![CDATA[在PADS中如何导出PCB封装库]]></title><link>https://blog.youkuaiyun.com/pointer_lu/article/details/84061193</link><guid>https://blog.youkuaiyun.com/pointer_lu/article/details/84061193</guid><author>pointer_lu</author><pubDate>Wed, 14 Nov 2018 09:44:42 +0800</pubDate><description><![CDATA[1.在 pads layout 下打开 PADS 文件，
2.file / library…---》Create New Lib…---》建立一个自己的PCB DECAL 库，
3.将 PCB 缩小到可以全部显示 pcb layout ,
4.按右键，选择 &quot;Select Components&quot;,再框选整个 PCB Layout,所有零件被选中，
5.再按右键，在弹出的菜单中选择“ save to...]]></description><category></category></item><item><title><![CDATA[解决ORCAD不能从外面复制东西到里面的问题]]></title><link>https://blog.youkuaiyun.com/pointer_lu/article/details/83862582</link><guid>https://blog.youkuaiyun.com/pointer_lu/article/details/83862582</guid><author>pointer_lu</author><pubDate>Thu, 08 Nov 2018 15:51:13 +0800</pubDate><description><![CDATA[]]></description><category></category></item><item><title><![CDATA[Word文档中怎么输入上标下标，上标下标快捷键是什么？]]></title><link>https://blog.youkuaiyun.com/pointer_lu/article/details/83578377</link><guid>https://blog.youkuaiyun.com/pointer_lu/article/details/83578377</guid><author>pointer_lu</author><pubDate>Wed, 31 Oct 2018 11:08:10 +0800</pubDate><description><![CDATA[http://www.wordlm.com/html/2901.html]]></description><category></category></item><item><title><![CDATA[excel中某个关键字高度]]></title><link>https://blog.youkuaiyun.com/pointer_lu/article/details/83242909</link><guid>https://blog.youkuaiyun.com/pointer_lu/article/details/83242909</guid><author>pointer_lu</author><pubDate>Sun, 21 Oct 2018 16:56:49 +0800</pubDate><description><![CDATA[]]></description><category></category></item><item><title><![CDATA[Lp Wizard 10.5导出的封装没有焊盘]]></title><link>https://blog.youkuaiyun.com/pointer_lu/article/details/82928142</link><guid>https://blog.youkuaiyun.com/pointer_lu/article/details/82928142</guid><author>pointer_lu</author><pubDate>Tue, 02 Oct 2018 20:16:49 +0800</pubDate><description><![CDATA[https://blog.youkuaiyun.com/wisdom8412/article/details/52751579

PAD和PSM路径里面加入&quot;.&quot;，就可以了。

 ]]></description><category></category></item><item><title><![CDATA[关闭Cadence 原理图 弹出startpage 页面的方法]]></title><link>https://blog.youkuaiyun.com/pointer_lu/article/details/82779524</link><guid>https://blog.youkuaiyun.com/pointer_lu/article/details/82779524</guid><author>pointer_lu</author><pubDate>Wed, 19 Sep 2018 22:36:55 +0800</pubDate><description><![CDATA[https://blog.youkuaiyun.com/tcjy1000/article/details/24782213]]></description><category></category></item><item><title><![CDATA[OrCAD原理图的off-page加页面号]]></title><link>https://blog.youkuaiyun.com/pointer_lu/article/details/81587190</link><guid>https://blog.youkuaiyun.com/pointer_lu/article/details/81587190</guid><author>pointer_lu</author><pubDate>Sat, 11 Aug 2018 15:30:36 +0800</pubDate><description><![CDATA[https://jingyan.baidu.com/article/148a1921a3b9c84d71c3b1e1.html]]></description><category></category></item><item><title><![CDATA[allegro导入网表错误详解]]></title><link>https://blog.youkuaiyun.com/pointer_lu/article/details/81045543</link><guid>https://blog.youkuaiyun.com/pointer_lu/article/details/81045543</guid><author>pointer_lu</author><pubDate>Sat, 14 Jul 2018 17:14:28 +0800</pubDate><description><![CDATA[https://wenku.baidu.com/view/ef749edbf021dd36a32d7375a417866fb84ac0e5.html]]></description><category></category></item><item><title><![CDATA[删除与添加off-page connect页码]]></title><link>https://blog.youkuaiyun.com/pointer_lu/article/details/80806547</link><guid>https://blog.youkuaiyun.com/pointer_lu/article/details/80806547</guid><author>pointer_lu</author><pubDate>Mon, 25 Jun 2018 20:12:55 +0800</pubDate><description><![CDATA[1、先删除2、再添加]]></description><category></category></item><item><title><![CDATA[P沟道mos管作为开关的条件（GS >GS（TH））]]></title><link>https://blog.youkuaiyun.com/pointer_lu/article/details/80739609</link><guid>https://blog.youkuaiyun.com/pointer_lu/article/details/80739609</guid><author>pointer_lu</author><pubDate>Tue, 19 Jun 2018 22:37:47 +0800</pubDate><description><![CDATA[1、P沟道mos管作为开关，栅源的阀值为-0.4V，当栅源的电压差为-0.4V就会使DS导通，如果S为2.8V，G为1.8V，那么GS=-1V，mos管导通，D为2.8V如果S为2.8V，G为2.8V，VGSw那么mos管不导通，D为0V，所以，如果2.8V连接到S，要mos管导通为系统供电，系统连接到D，利用G控制。那么和G相连的GPIO高电平要2.8-0.4=2.4V以上，才能使mos管关断，...]]></description><category></category></item><item><title><![CDATA[场效应管]]></title><link>https://blog.youkuaiyun.com/pointer_lu/article/details/80719445</link><guid>https://blog.youkuaiyun.com/pointer_lu/article/details/80719445</guid><author>pointer_lu</author><pubDate>Sun, 17 Jun 2018 16:48:09 +0800</pubDate><description><![CDATA[引脚定义]]></description><category></category></item></channel></rss>