![Image](/./qsource/plugin/uhome/template/assets/img/user_home_headerbg.jpg)
请教图中D1为什么管?
2011-11-20 13:34
- 电子技术交流论坛
- 33
- 3470
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
稳压芯片两端的电容什么作用
2019-3-27 19:32
- PCB技术
- 29
- 19624
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
请问 PADS 2007中 怎么样建 元件啊
2011-5-1 01:20
- PCB技术
- 2
- 2032
![](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焊完后怎么清洗掉上面的松香?
2011-4-7 17:00
- PCB技术
- 21
- 10849
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
串联的问题?
2010-6-26 10:39
- 新手园地
- 19
- 1900
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
新手怕什么,喜欢什么?
2024-6-22 14:05
- 新手园地
- 1643
- 382015
![](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设计者请进!
2010-6-26 21:05
- PCB技术
- 13
- 1865
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
色环电阻辅助识别工具初学者很好用!
2010-11-24 16:21
- 新手园地
- 14
- 1984
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
仿真软件您知道么?
2012-7-1 00:33
- 新手园地
- 44
- 5561
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
学习PADS画PCB
2010-6-26 11:18
- 新手园地
- 15
- 3570
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
贴片元件封装
2010-11-16 16:03
- PCB技术
- 4
- 2633
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
放大器封装?
2010-11-16 16:01
- PCB技术
- 4
- 2470
![](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板焊盘焊接后的问题
2010-11-18 11:22
- PCB技术
- 4
- 1733
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
pads2007元件库问题
2011-1-18 16:02
- EDA 技术
- 1
- 3366
![](https://bbs.21ic.com/static/image/common/icon_quote_m_s.gif)
![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
led灯珠的问题?
2011-3-9 15:35
- 电子技术交流论坛
- 4
- 1572
2
3
近期访客