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    <title>电话机软解码电路图</title>
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    <pubDate>2007-05-05</pubDate>
    <category>电话机原理图</category>
    <author>菁菁木华</author>
    <comments>来源网络，自行编辑，服务大家</comments>
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    <title>门禁电话通话电路</title>
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    <description>In this doorphone circuit,an 8 ohm speaker is used both as a microphone and also an output device. The BC109C stage amplifies in common base mode, giving good voltage gain , whilst providing a low impedance input to match the speaker. Self DC bias i</description>
    <pubDate>2007-03-27</pubDate>
    <category>电话机原理图</category>
    <author>秩名</author>
    <comments>电子电路图网</comments>
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    <title>耳塞式二管接收电话机</title>
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    <description></description>
    <pubDate>2007-03-18</pubDate>
    <category>电话机原理图</category>
    <author>秩名</author>
    <comments>电子电路图网</comments>
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    <title>电话维修参考电路图</title>
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    <pubDate>2007-02-13</pubDate>
    <category>电话机原理图</category>
    <author>菁菁木华</author>
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<item>
    <title>光藕用于电话保安装置电路图</title>
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    <pubDate>2007-02-03</pubDate>
    <category>电话机原理图</category>
    <author>菁菁木华</author>
    <comments>电子电路图网</comments>
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    <title>简易电话检修仪</title>
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    <pubDate>2007-02-02</pubDate>
    <category>电话机原理图</category>
    <author>菁菁木华</author>
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    <title>电话机原理图02</title>
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    <description></description>
    <pubDate>2007-01-10</pubDate>
    <category>电话机原理图</category>
    <author>菁菁木华</author>
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    <title>电话机原理图03</title>
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    <pubDate>2007-01-09</pubDate>
    <category>电话机原理图</category>
    <author>菁菁木华</author>
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    <title>电话机原理图04</title>
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    <pubDate>2007-01-09</pubDate>
    <category>电话机原理图</category>
    <author>菁菁木华</author>
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    <title>电话机原理图05</title>
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    <pubDate>2007-01-09</pubDate>
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    <author>菁菁木华</author>
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    <title>电话机原理图06</title>
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    <pubDate>2007-01-09</pubDate>
    <category>电话机原理图</category>
    <author>菁菁木华</author>
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    <title>电话机原理图07</title>
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    <description></description>
    <pubDate>2007-01-08</pubDate>
    <category>电话机原理图</category>
    <author>菁菁木华</author>
    <comments>电子电路图网</comments>
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    <title>电话机原理图08</title>
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    <pubDate>2007-01-08</pubDate>
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    <author>菁菁木华</author>
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    <title>电话机原理图09</title>
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    <description></description>
    <pubDate>2007-01-08</pubDate>
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    <author>菁菁木华</author>
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    <title>电话扩音录音附加装置</title>
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    <pubDate>2007-01-06</pubDate>
    <category>电话机原理图</category>
    <author>菁菁木华</author>
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    <title>电话模拟摘机电路</title>
    <link>/telephone/469.htm</link>
    <description></description>
    <pubDate>2007-01-06</pubDate>
    <category>电话机原理图</category>
    <author>菁菁木华</author>
    <comments>电子电路图网</comments>
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    <title>电话占线指示器电路</title>
    <link>/telephone/468.htm</link>
    <description></description>
    <pubDate>2007-01-06</pubDate>
    <category>电话机原理图</category>
    <author>菁菁木华</author>
    <comments>电子电路图网</comments>
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    <title>电话占线指示器电路2</title>
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    <description></description>
    <pubDate>2007-01-06</pubDate>
    <category>电话机原理图</category>
    <author>菁菁木华</author>
    <comments>电子电路图网</comments>
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    <title>简易单位内部电话交换机电路</title>
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    <pubDate>2007-01-05</pubDate>
    <category>电话机原理图</category>
    <author>菁菁木华</author>
    <comments>电子电路图网</comments>
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    <title>同线电话转接装置(1)</title>
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    <pubDate>2007-01-04</pubDate>
    <category>电话机原理图</category>
    <author>菁菁木华</author>
    <comments>电子电路图网</comments>
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    <title>同线电话转接装置(2)</title>
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    <description></description>
    <pubDate>2007-01-04</pubDate>
    <category>电话机原理图</category>
    <author>菁菁木华</author>
    <comments>电子电路图网</comments>
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    <title>小巧电话分线器</title>
    <link>/telephone/460.htm</link>
    <description></description>
    <pubDate>2007-01-04</pubDate>
    <category>电话机原理图</category>
    <author>菁菁木华</author>
    <comments>电子电路图网</comments>
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    <title>电话机原理图01</title>
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    <description></description>
    <pubDate>2006-12-30</pubDate>
    <category>电话机原理图</category>
    <author>菁菁木华</author>
    <comments>电子电路图网</comments>
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    <title>一款无线免提电话装置</title>
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    <description></description>
    <pubDate>2006-10-12</pubDate>
    <category>电话机原理图</category>
    <author>菁菁木华</author>
    <comments>电子电路图网</comments>
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    <title>电话拨号电路</title>
    <link>/telephone/28.htm</link>
    <description></description>
    <pubDate>2006-09-18</pubDate>
    <category>电话机原理图</category>
    <author>菁菁木华</author>
    <comments>电子电路图网</comments>
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    <title>电话对讲电路</title>
    <link>/telephone/27.htm</link>
    <description></description>
    <pubDate>2006-09-18</pubDate>
    <category>电话机原理图</category>
    <author>菁菁木华</author>
    <comments>电子电路图网</comments>
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    <title>电话音量监控电路</title>
    <link>/telephone/26.htm</link>
    <description></description>
    <pubDate>2006-09-17</pubDate>
    <category>电话机原理图</category>
    <author>菁菁木华</author>
    <comments>电子电路图网</comments>
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    <title>电话远距离振铃电路</title>
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    <description></description>
    <pubDate>2006-09-17</pubDate>
    <category>电话机原理图</category>
    <author>菁菁木华</author>
    <comments>电子电路图网</comments>
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