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新手画FPGA二层板,恳请高人指正
2015-2-7 11:48
- PCB技术
- 14
- 4596
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
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四层板top与bottom层有没有必要铺铜(地与电源电气连接良好)
2018-4-24 09:46
- PCB技术
- 22
- 29798
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
PCB两层板及四层板的板厚一般设置多少
2014-5-26 23:24
- PCB技术
- 8
- 10518
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
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还在用99se的人进来描述下你是什么情况
2024-11-27 09:23
- EDA 技术
- 209
- 182066
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工程师应该掌握的20个模拟电路
2014-5-25 20:57
- 模拟技术论坛
- 122
- 18225
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贡献我历时半年整理的allegro库和焊盘 700多个器件,规则命名
2024-8-6 18:53
- PCB技术
- 262
- 51458
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
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【活动贴】我一直用的ALLEGRO16.5快捷键分享
2015-9-21 09:10
- EDA 技术
- 16
- 3554
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
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请教下,在AD中如何斜着放置元件成45度角呢。
2015-2-21 23:26
- PCB技术
- 6
- 20182
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请教该如何测试电容的高频阻抗,
2011-12-12 12:35
- 仪器仪表
- 5
- 2746
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![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
授之以渔: 卡尔曼滤波器 ....大泻蜜 .........................
2021-7-14 10:11
- 侃单片机论坛
- 278
- 110067
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研发一年多,这个图居然不会分析
2012-5-22 14:40
- 电子技术交流论坛
- 65
- 11460
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