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 <title><![CDATA[步进电机的问题]]></title>
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 <description><![CDATA[Latest 50 replies of 步进电机的问题]]></description>
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 <description><![CDATA[是的 输出是脉冲电流（是有顺序脉冲电流） L298N只有个驱动芯片他必须由前置信号发生电路触发，他跟前置信号发生电路的区别就是你所说的输出功率问题，L298N主要是来实现功率放大而已。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-109699#1067820.html]]></link>
 <author><![CDATA[z4131246]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sun, 12 Jun 2011 03:54:49 +0000]]></pubdate>
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 <description><![CDATA[我就得你的图纸也有问题，绕组的中间抽头是公共端吧。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-109699#1067075.html]]></link>
 <author><![CDATA[路在何方]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 11 Jun 2011 07:02:50 +0000]]></pubdate>
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 <description><![CDATA[[s:28]我也想学]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-109699#1066307.html]]></link>
 <author><![CDATA[wjm0426]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 10 Jun 2011 12:36:48 +0000]]></pubdate>
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 <description><![CDATA[[s:21]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-109699#1066304.html]]></link>
 <author><![CDATA[余清华]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 10 Jun 2011 12:34:45 +0000]]></pubdate>
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 <description><![CDATA[步进电机控制原理是弱电控制强电，你把可控硅的访原理搞明白]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-109699#1066224.html]]></link>
 <author><![CDATA[xlqlh]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 10 Jun 2011 11:22:12 +0000]]></pubdate>
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 <description><![CDATA[电路不完整，8个二极管应该是起续流作用的，也就起保护L298n芯片。2/3线和对应绕组没有标号。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-109699#1066207.html]]></link>
 <author><![CDATA[shenyijin]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 10 Jun 2011 11:05:14 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[我也想学，]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-109699#1066206.html]]></link>
 <author><![CDATA[zjl140519903]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 10 Jun 2011 11:05:03 +0000]]></pubdate>
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