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 <title><![CDATA[5V直流电源,输出间的电阻只有50欧，正常吗 ..]]></title>
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 <description><![CDATA[Latest 50 replies of 5V直流电源,输出间的电阻只有50欧，正常吗 ..]]></description>
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 <description><![CDATA[不太正常吧？ [s:21]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-119755#1129129.html]]></link>
 <author><![CDATA[zhangli019]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Wed, 21 Sep 2011 05:51:17 +0000]]></pubdate>
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 <description><![CDATA[有内阻是正常的吧，本身它也消耗一部分功率的。很奇怪你是怎么测的？]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-119755#1126594.html]]></link>
 <author><![CDATA[gali1120107]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 16 Sep 2011 11:15:03 +0000]]></pubdate>
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 <description><![CDATA[可以直接测量变压器的二次阻值，看看是不是一样的。低压侧电阻是很小的]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-119755#1125788.html]]></link>
 <author><![CDATA[ying-feng]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 15 Sep 2011 04:28:08 +0000]]></pubdate>
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 <description><![CDATA[用MF14型表测 ，红笔测正5伏为60欧，黑笔测正5伏为95伏]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-119755#1125734.html]]></link>
 <author><![CDATA[sylgq]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 15 Sep 2011 02:48:08 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[用万用表的表棒交换测量，看是否都为50欧姆。因为一般稳压二次输出电压为半波整流加滤波，你可能测量的正好是整流管的正向内阻。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-119755#1125728.html]]></link>
 <author><![CDATA[wwcwwc]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 15 Sep 2011 02:30:30 +0000]]></pubdate>
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