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画PCB封装中遇到的问题
2012-12-4 21:54
- PCB技术
- 17
- 4661
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关于变压器漏感的测试?
2011-7-18 16:51
- 电源技术
- 7
- 5178
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![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
【有奖研讨会预告】7.27上午基于富士通MCU的电机驱动方案
2010-8-24 21:16
- 21ic投诉|建议|站务
- 20
- 4890
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自制<<手把手教你学单片机C程序设计>>实验板
2012-9-10 14:25
- 侃单片机论坛
- 184
- 21502
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我想做一个51的开发板,外接电源用5V好还是9V好。
2010-7-13 18:04
- 侃单片机论坛
- 20
- 10778
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![](https://bbs.21ic.com/static/image/common/icon_quote_m_e.gif)
开关电源,初次级的电容的作用?为什么不能太大啊
2011-4-22 16:10
- 电源技术
- 6
- 2977
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