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 <title><![CDATA[一根加热丝 加热电压由 220V 变到 380V 加 ..]]></title>
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 <description><![CDATA[Latest 50 replies of 一根加热丝 加热电压由 220V 变到 380V 加 ..]]></description>
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 <description><![CDATA[基本上理论是根号三倍 实际使用是综合一般发热丝的正温度电阻特性 估计根号2倍 如果发热时的散热好 会很红火 如果发热丝承受不了多出的50左右温度 会高温氧化 烧断]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1410479#1375610.html]]></link>
 <author><![CDATA[newber]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 10 Nov 2012 17:23:56 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[小问题啊，由小到大啊&nbsp;&nbsp;]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1410479#1371159.html]]></link>
 <author><![CDATA[冷风吹]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 03 Nov 2012 08:46:06 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[3楼+1]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1410479#1371151.html]]></link>
 <author><![CDATA[神银空空]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 03 Nov 2012 08:32:27 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[[quote]引用第6楼沈江淼于2012-11-02 09:52发表的&nbsp;&nbsp;:

温度提高电阻也变大[电阻跟温度密切联系]
[/quote]
电阻隨温度变化是肯定的，但相对电压的提高的程度还是可以忽略的。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1410479#1371105.html]]></link>
 <author><![CDATA[guo4285]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Sat, 03 Nov 2012 07:20:04 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[:一根加热丝 加热电压由 220V 变到 380V 加热电流怎么变化]]></title>
 <description><![CDATA[看加热丝功率超不超，小心烧断]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1410479#1370305.html]]></link>
 <author><![CDATA[tieyuannan]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 02 Nov 2012 02:04:17 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[电流增大1.732倍]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1410479#1370300.html]]></link>
 <author><![CDATA[yuncxb]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 02 Nov 2012 01:57:25 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[3楼正解。]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1410479#1370245.html]]></link>
 <author><![CDATA[ckliushx]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 02 Nov 2012 00:58:23 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[3楼正解]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1410479#1370197.html]]></link>
 <author><![CDATA[wananjushi]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Fri, 02 Nov 2012 00:04:00 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[I=U/R]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1410479#1370172.html]]></link>
 <author><![CDATA[hulilanyu]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 01 Nov 2012 15:29:53 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[电阻是不变的，因此电流由小变大[s:21]]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1410479#1370067.html]]></link>
 <author><![CDATA[zczc777]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 01 Nov 2012 13:10:34 +0000]]></pubdate>
</item>
<item>
 <title><![CDATA[]]></title>
 <description><![CDATA[由小到大]]></description>
 <link><![CDATA[http://www.ymmfa.com/read-gktid-1410479#1370062.html]]></link>
 <author><![CDATA[下大雨]]></author>
 <category><![CDATA[综合讨论]]></category>
 <pubdate><![CDATA[Thu, 01 Nov 2012 13:05:10 +0000]]></pubdate>
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