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自己组装收音机的方法谁能教教我？

自己组装收音机的方法谁能教教我？

浏览：44次 | 提问时间： 08-06 08:23

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3个答案

瘾与深港 08-06 08:24

自己组装收音机的方法:
建议你先从单片机万年历之类的东西开始练习。
收音机之类的东西市场上和网上都有成品的套件*，
里面包含所有需要的*元件和PCB电路板，焊接上经过简单调试就能用。
工具需要你自己准备，
主要包括：万用表（数字的指针的都行，不用太高端，组装这东西十几块钱的DT830万用表就行）、
电烙铁（内热或外热的都行，尖头烙铁，功率在20-40W）、焊锡丝
（初学者建议不要使用无铅的）、镊子。组装收音机需要掌握电路的基础知识、模拟电路知识、高频电路的相关内容、信号的解调、检波等内容，比较复杂

最初 08-06 08:32

你好，其实不难方法如下，按照电路图给出的数值购买*元件，准备一块合适的电木板，在上面设计好元器件的安放位置后就可以钻孔，把相应的原件插入就可以按图纸焊接了，核对无误之后通电调试晶体管偏流电阻到要求数值即可再调试谐振电路，装入机壳。

伪情人 08-06 08:40

最简单的矿石收音机组装需要以下材料：
1、极好的天地线（天线约5至6米）
2、高Q值的线圈、一个可变电容和一个普通电容（2200皮法）
3、低正向压降的检波器（也叫矿石，现在很难买到，可以试试2AP9，1N60这两种二极管）
4、灵敏和有良好阻抗匹配的耳机（一定要高阻！不然会不出声，可以用陶瓷扬声器）
5、一个底板或者机箱
6、一个骨架（用来绕制线圈，可以用卫生纸筒）
7、一些导线，一些漆包线（可以从废旧的线圈式镇流器和变压器里拆）。

组装方法：
第一步：在纸筒上用漆包线绕制线圈，九十圈，可以在头尾处钻一个眼，把线穿过去，用胶带粘好。然后小心地把漆包线的漆去掉，可以用砂纸磨。
第二步：把可变电容连在它的两边，一定确定电容的两极，不要错了，如果有万用表最好量一下，相互电阻为无穷大的就是电容的两极，可以用电烙铁配合松香焊锡把它焊上，使之更加牢固。
第三步：把二极管的随便一极连在可变电容与线圈相连的随便一极上。
第四步：把高阻耳机分别与二极管的另一极，可变电容的另一极（没连二极管的一级）相连。
第四步：在高阻耳机的两极上连上电容，那个2200皮法的。
第五步：在可变电容，二极管，线圈相连的地方接上天线，就是一段导线，越长越好，收到的台越多，最短两米。在可变电容，高阻耳机，线圈相连的地方连上地线。
第六步：把地线连在暖气管，自来水管之类的东西上，把天线架在室外，尽量把天线架高。
第七步：戴上耳机试听一下，转动可变电容，听听有没有电台。

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