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 <title><![CDATA[各位前辈小弟有个问题]]></title>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-20502.html]]></link>
 <description><![CDATA[Latest 50 replies of 各位前辈小弟有个问题]]></description>
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 <description><![CDATA[工控人家园]]></description>
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 <description><![CDATA[不可以 [s:21]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-20502#300462.html]]></link>
 <author><![CDATA[ydp]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 02 Sep 2008 15:54:29 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[不可以 [s:21]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-20502#300443.html]]></link>
 <author><![CDATA[逍遥]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 02 Sep 2008 15:22:45 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[楼上的各位大哥说的很对的哦 [s:26]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-20502#300388.html]]></link>
 <author><![CDATA[100759]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 02 Sep 2008 14:00:42 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[不能并联]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-20502#300378.html]]></link>
 <author><![CDATA[19700605]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 02 Sep 2008 13:50:22 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[不可以啊,接上的话你的PLC可能就会动作异常程序执行错误啊]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-20502#300308.html]]></link>
 <author><![CDATA[yangxunfen]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 02 Sep 2008 13:06:07 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[绝对不行，PLC的电源是绝不能再接外部电源的，这点是最基础的东西了]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-20502#300240.html]]></link>
 <author><![CDATA[jiouling]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 02 Sep 2008 12:10:38 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[7楼分析的好!]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-20502#300208.html]]></link>
 <author><![CDATA[yanghua888]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 02 Sep 2008 11:35:19 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[谢谢 [s:21]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-20502#300206.html]]></link>
 <author><![CDATA[小不点]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 02 Sep 2008 11:30:30 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[同意四楼的观点]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-20502#300190.html]]></link>
 <author><![CDATA[周影]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 02 Sep 2008 10:57:40 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[[s:21]&nbsp;&nbsp;[s:21]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-20502#299899.html]]></link>
 <author><![CDATA[wdbrg]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 02 Sep 2008 03:18:58 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[除非电源阻抗无穷大 在电路基础里面学过的]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-20502#299763.html]]></link>
 <author><![CDATA[nbwrk]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 02 Sep 2008 00:38:24 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[楼上说得有道理 这种情况在现实中是不可能做到同阻抗的 
我碰到过这样的问题了&nbsp;&nbsp;一旦并联 PLC 就会乱工作&nbsp;&nbsp;
经分析应该是两个不同阻抗的电源并联&nbsp;&nbsp;因为阻抗不一样 输出电流不一样 两个电源之间会形成环流&nbsp;&nbsp;导到PLC24V电源不能正常工作&nbsp;&nbsp;从而PLC也不能正常工作&nbsp;&n ..]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-20502#299761.html]]></link>
 <author><![CDATA[nbwrk]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Tue, 02 Sep 2008 00:37:31 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[电源并联是有条件的:一电压相同.二阻抗比相同(内阻)]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-20502#299638.html]]></link>
 <author><![CDATA[waxiao88]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 01 Sep 2008 14:52:01 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[不可以!]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-20502#299636.html]]></link>
 <author><![CDATA[nrhua]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 01 Sep 2008 14:47:37 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[不可以,电源一般情况下是不允许并串连的,尤其是并连,万万使不得,要出事的]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-20502#299627.html]]></link>
 <author><![CDATA[smallislet]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Mon, 01 Sep 2008 14:41:06 +0000]]></pubdate>
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