收音机论文
制作迷你收音机作文
制作迷你收音机作文
制作迷你收音机。
嘿，搞了个小玩意儿！这不，迷你收音机嘛！先选了几个漂亮的零件，看着就让人开心。
木板得自己动手切，我这手艺可不赖，几刀下去，形状就出来了，边边角角都磨得光溜溜的。
接下来是电线和电路板，哎哟，这可得仔细点儿。
红的蓝的线儿缠在一起，我一点点给它们找到“家”。
调谐器这块儿最有意思，像个小旋钮，一转就能听到不同的声音。
每次转都好像能听到不同的故事，神奇得很！
电池盒一放，收音机就活了！电流“咻”地一下流过去，收音机就“嘀嘀”地响了，像是在说“我准备好啦！”。
最后就是装饰啦。
我找了几片贴纸，啪地贴上去，嘿，立马就变了个样儿，酷毙了！
打开开关，音乐就飘出来了。
虽然声音不大，但听着就是舒服。
这可是我亲手做的，成就感满满啊！。
实践报告收音机(2篇)
第1篇一、实践背景随着科技的不断发展，电子产品在我们的生活中扮演着越来越重要的角色。
收音机作为传统的电子设备，虽然在使用频率上有所下降，但其独特的功能和便携性仍然受到许多人的喜爱。
为了提高自己的动手能力和对电子产品的了解，我们决定进行收音机的制作实践。
二、实践目的1. 了解收音机的基本原理和组成；2. 掌握收音机制作的基本步骤和技巧；3. 培养团队合作精神和动手能力；4. 提高对电子产品的兴趣和热爱。
三、实践内容1. 收音机的基本原理和组成收音机是一种通过接收无线电波来播放声音的设备。
它主要由天线、调谐电路、放大电路、解调电路和扬声器等部分组成。
天线负责接收无线电波，调谐电路负责选择所需的频率，放大电路负责放大信号，解调电路负责将调制信号还原成音频信号，最后通过扬声器播放出来。
2. 收音机制作步骤（1）准备材料：天线、调谐电路元件、放大电路元件、解调电路元件、扬声器、电池、电路板、焊锡、烙铁等。
（2）制作天线：将天线材料弯曲成合适的形状，长度约为1米，一端焊接在电路板上，另一端留出足够长的线作为接收端。
（3）搭建调谐电路：根据所需的频率范围选择合适的变容二极管和可变电容器，将它们焊接在电路板上，连接到天线端。
（4）搭建放大电路：选择合适的晶体管和电阻、电容等元件，将它们焊接在电路板上，连接到调谐电路。
（5）搭建解调电路：选择合适的解调电路元件，如二极管、电阻、电容等，将它们焊接在电路板上，连接到放大电路。
（6）搭建扬声器电路：将扬声器焊接在电路板上，连接到解调电路。
（7）连接电池：将电池的正负极分别连接到电路板的电源输入端。
（8）调试与测试：调整调谐电路中的可变电容器，使收音机能够接收到稳定的信号，并调整放大电路中的电阻和电容，使音量适中。
四、实践过程1. 小组成员分工明确，负责不同的制作环节，如天线制作、电路搭建、调试与测试等。
2. 在制作过程中，遇到一些问题，如焊接技术不熟练、元件选择不当等。
有关收音机的英文作文
有关收音机的英文作文示例1:Title: The Fascinating World of RadiosIntroduction:Radios have been an integral part of our lives for decades. They have evolved from being a simple means of communication to becoming a source of entertainment and information. This essay explores the history, significance, and impact of radios in our society.Body:1. Historical Background:Radios were first invented by Guglielmo Marconi in the late 19th century. His experiments with wireless telegraphy laid the foundation for modern radio communication. Over the years, radios have undergone significant transformations, from bulky,valve-based devices to sleek, portable ones.2. Communication and Information:One of the primary uses of radios is communication. They serve as a vital tool in broadcasting news, weather updates, emergencyalerts, and public service announcements. Radios are particularly important in areas with limited access to other forms of communication, such as remote villages or during natural disasters.3. Entertainment:Radios are a source of entertainment for millions of people worldwide. They offer a diverse range of music, talk shows, dramas, and sports broadcasts. Radio stations cater to various interests and preferences, providing a platform for artists, musicians, and radio hosts to showcase their talent.4. Educational Value:Radios play a crucial role in education. They are used in classrooms to enhance learning experiences. Educational programs broadcasted on radios cover a wide range of subjects, from science and history to language learning. Radios provide a valuable resource for students, especially those in underprivileged areas with limited access to other educational resources.5. Cultural Preservation:Radios help preserve and promote cultural heritage. Many radio stations focus on preserving traditional music, folklore, andregional languages. They provide a platform for local artists and cultural enthusiasts to showcase their talent, ensuring that cultural traditions are passed down through generations.6. Global Impact:Radios have a global reach, transcending geographical boundaries. International radio stations enable people to stay connected with news, music, and cultural events from around the world. Radios have played a significant role in shaping public opinion, promoting cross-cultural understanding, and fostering unity among diverse communities.Conclusion:Radios have come a long way since their invention, transforming from a means of communication to a powerful medium of entertainment, education, and cultural preservation. With their ability to reach millions of people worldwide, radios continue to play a vital role in our society, connecting people and providing a source of information, entertainment, and inspiration.示例2:Title: The Radio - A Timeless CompanionIntroduction:The radio has been a significant technological advancement that has revolutionized the way we communicate and entertain ourselves. Since its invention, the radio has played a pivotal role in shaping our society, providing us with news, music, and a means of connecting with the world. In this essay, we will explore the impact of the radio on our lives and its enduring relevance in the digital age.Body:1. Historical Background:The radio was invented in the late 19th century by various scientists and inventors, with Guglielmo Marconi being credited as the father of radio. Its early years were marked by experimentation and the establishment of radio stations. The radio gained popularity during the early 20th century, becoming a common household item.2. Communication and Information:One of the radio's most significant contributions is its ability to disseminate information and news. Radio broadcasts allow us to stay informed about current events, weather updates, and importantannouncements. Whether it's during emergencies or daily routine, the radio serves as a reliable source of information, especially in areas with limited access to electricity or the internet.3. Entertainment and Music:Radio has been a constant companion for music enthusiasts worldwide. It provides a platform for artists to showcase their talent and allows listeners to discover new genres and songs. From talk shows to live performances, radio programs cater to a diverse range of interests and preferences. Even with the advent of digital music platforms, the radio remains a popular medium for music lovers.4. Cultural Preservation:The radio has played a crucial role in preserving and promoting diverse cultures. Local radio stations often feature programs that celebrate regional music, traditions, and languages. This enables communities to maintain their cultural identity and fosters a sense of belonging among listeners. The radio serves as a unifying force, connecting people through shared experiences and traditions.5. Adaptation to the Digital Age:In recent years, the radio has undergone a transformation to adapt to the digital age. Online streaming and podcasting platforms have made radio programs accessible globally. Additionally, advancements in technology have enabled the integration of radio receivers into smartphones and other portable devices. These developments ensure that the radio remains relevant in an increasingly digital world.Conclusion:The radio has withstood the test of time and continues to be an integral part of our lives. Its role in providing information, entertainment, and cultural preservation cannot be understated. As we move towards a more interconnected world, the radio's ability to adapt and evolve ensures its continued significance in the years to come. So, let us appreciate the radio's enduring legacy and celebrate its contribution to society.示例3:RadioRadio is a device that has been a significant part of our lives for many years. It is used for various purposes, includingentertainment, news, and communication. In this article, we will explore the history and importance of radios.The invention of the radio can be credited to several individuals, including Nikola Tesla and Guglielmo Marconi. However, it was Marconi who successfully transmitted the first radio signal across the Atlantic Ocean in 1901. This breakthrough opened up a new era of communication and entertainment.Radios quickly became popular and accessible to the general public. They provided a means of entertainment through music, dramas, and other programs. Families would gather around their radios in the evenings to listen to their favorite shows. It was a form of shared experience and brought people together.During World War II, radios played a crucial role in disseminating information and maintaining morale. They were used to broadcast news updates, government announcements, and even propaganda. Soldiers relied on radios for communication and receiving orders. The radio became an essential tool for both military and civilian populations.As technology advanced, radios evolved as well. From the bulky, analog devices of the past, we now have sleek, digital radios with various features. Today, we can listen to radios not only through traditional FM/AM frequencies but also through online streaming platforms and satellite radio.The importance of radios extends beyond entertainment. They are still widely used for emergency communication, especially in remote areas or during natural disasters. Radios can provide vital information and instructions during emergencies when other means of communication may be disrupted.In conclusion, radios have played a significant role in our lives for over a century. They have entertained us, connected us, and provided us with crucial information. Despite the rise of other technologies, radios continue to be relevant and continue to evolve. They remain a valuable device for communication and entertainment.。
收音机实践报告(2篇)
第1篇一、实践背景随着科技的发展，无线通信技术日益普及，收音机作为传统的无线接收设备，在人们的日常生活中仍然扮演着重要角色。
为了更好地了解收音机的工作原理和实际应用，我们进行了一次收音机实践。
二、实践目的1. 理解收音机的工作原理；2. 掌握收音机的组装和调试方法；3. 了解收音机在实际生活中的应用。
三、实践内容1. 收音机工作原理收音机是一种接收无线电波的设备，其工作原理如下：（1）天线接收无线电波：收音机的天线可以将空间中的无线电波接收下来。
（2）高频放大器：天线接收到的无线电波经过高频放大器进行放大。
（3）混频器：高频放大器输出的信号与本振信号进行混频，得到中频信号。
（4）中频放大器：中频信号经过中频放大器进行放大。
（5）检波器：中频放大器输出的信号经过检波器，将高频信号转换为音频信号。
（6）低频放大器：音频信号经过低频放大器进行放大。
（7）扬声器：低频放大器输出的信号通过扬声器播放出来。
2. 收音机的组装与调试（1）组装：首先，我们需要准备好收音机的各个部件，包括天线、高频放大器、混频器、中频放大器、检波器、低频放大器、扬声器等。
然后，按照电路图的要求，将各个部件连接起来。
（2）调试：组装完成后，我们需要对收音机进行调试，使其正常工作。
调试步骤如下：①调整天线长度：根据接收信号的频率，调整天线长度，使其与接收信号的波长相匹配。
②调整本振频率：调整本振频率，使其与接收信号的频率接近。
③调整中频放大器增益：调整中频放大器增益，使中频信号得到适当的放大。
④调整低频放大器增益：调整低频放大器增益，使音频信号得到适当的放大。
3. 收音机在实际生活中的应用收音机在实际生活中有着广泛的应用，以下列举几个方面：（1）天气预报：收音机可以接收气象部门发布的天气预报，为人们的生活提供便利。
（2）交通广播：收音机可以接收交通广播，了解路况信息，为出行提供参考。
（3）新闻资讯：收音机可以接收新闻广播，了解国内外大事，增长知识。
无线电收音机
目录摘要 (1)引言 (2)1 无线电广播接收机的基础知识 (2)1.1无线电波的发射与接收 (2)1.1.1无线电波的发射与接收 (3)1.1.2无线电广播收音机 (5)2收音机的背景与发展 (6)2.1收音机的背景 (6)2.2收音机的发展 (7)3全硅六管超外差式收音机 (9)3.1超外差式收音机工作原理 (9)3.2超外差式收音机电路分析 (11)3.3元器件说明 (15)3.4超外差式收音机的安装与调试 (19)3.4.1安装 (19)3.4.2调试及故障排除 (22)4结束语 (24)致谢 (25)参考文献 (26)附录1 (27)附录2 (28)全硅六管超外差式收音机的装配与调试卞盼盼摘要：电子设计自动化技术已渗透到电子系统和专用集成电路设计的各个环节，个中软件应用到电子设计，使电路的设计、调整和改进更加高效便捷。
简单分析了超外差式调幅收音机电路的工作原理及其组装和调试。
现在的9018将原来的插座改为立体声耳机插座，电路原理图未变，步线有所调整。
更改后的收音机灵敏度更高、声音更洪亮、用途更广泛，适合MP3、单放机等机型所使用的耳机。
散件为3V 低压全硅六管超外差式收音机，具有安装调试方便、工作稳定、生硬洪亮、耗电省等优点。
它由输入回路高放混频级、一级中放、二级中放、前置低放兼检波级、低放级和功放级等部分组成，接受频率范围为535KHZ～1605KHZ的中波段。
关键词：高放混频级低放兼检波级低压全硅管Abstract：Electronic design automation technology has infiltrated into electronic systems and application-specific integrated circuit design in all aspects, in a software applicati on to the electronic design and simulation, circuit design, adjust and improve more effici ent convenient. A simple analysis of the superheterodyne AM radio circuit and the principl e of assembly and debugging. Now the 9018 the original stereo headphone socket to socket, circuit schematics unchanged, infantry line adjustments. After the change of radio sensiti vity higher, sound more resonant, more extensive use for MP3, player models, such as by us ing headphones. Parts of 3 V low-voltage of the silicon six superheterodyne radio, with th e installation debugging convenience, the stability, rigidity, whose advantages in power c onsumption. It is the importation of high-level radioactive mixer circuit level, in a rele ase, the two-in, pre-release of the detection of low-level, low-level and on the high-leve l and other components, to accept the frequency range of 535 KHZ～ 1605KHZ in the band.Key Words: Mixing high-level, Low-level detection , Low-voltage of the silicon引言集成电路具有体积小、功耗低、可靠性高、性能好以及易于使系统整机实现少调整和不调整等优点，通信电路也正迅速向这方向发展。
收音机原理及历史简析
电工电子实习资料查询报告学院：光电工程学院专业：光电信息科学与工程(工) 学号：姓名：张帅摘要：对于普通老百姓来说，收音机是一件好东西。
听听新闻、歌曲、评书……现在，很多城市都有着多套广播节目，节目也是越来越精彩。
如果你的收音机能够接收短波和中波，那么你就真的可以坐在家中听世界了。
收音机的存在丰富了我们生活，在本文中介绍了收音机的发展历史以及常见的收音机原理。
也介绍了除基于双D触发器的电子蜡烛之外，新兴电子蜡烛的电路原理。
关键词：收音机；发展历史；原理；电子蜡烛一、收音机一、历史演变一百多年前，在这一刻一位年仅31岁的犹太青年科学家海因里希·鲁道夫·赫兹的名字被永远留驻在了一本名为“科学”的史书上。
他在他的实验室里证实了电磁波的存在!在向伟大的赫兹先生致敬完毕之后我们的文章正式开始。
首先我们将时代拉回到收音机发明的前夜那个信息发布方式落后的年代。
当时的人们肯定不会想到过了这个漆黑，寂静而看似普通的夜晚，他们忍受了千年，也使用了千年的信息广播方式(报纸)正在被世界上某个角落里而的一群人改变着。
无论是波帕夫抑或是马可尼.波波夫(学术界对收音机的发明者有争议)他们或许从来没有想过这个看似普通的夜晚他们的新发明会将人类社会引入一场怎样的巨大变革之中。
在影响人类社会的100项科技进步中收音机的发明排在了很靠前的位置仅仅次于火的使用、车轮、与印刷技术对人类社会带来的推动，在有了收音机这种全球通讯用具后，各国之间的信息交流恍然间加快。
我们现在生活中不可或缺得电视机、人造卫星、手提电话全都起源于收音机技术。
1、不用电的收音机1900年的时候，一个叫做Greenleaf Whi nier Pickard的人制作了世界上第一台矿石收音机。
矿石收音机的诞生宣告着一个时代的开始，一个收音机成为消费品进入千家万户的时代，矿石收音机是一个简单的无线电接收机，由长导线天线，用于选择信号频率的一调谐器和由二极管解调器构成的检波器组成，，这种收音机的最大特点是不需要任何的电池和电能就能够工作。
调频立体声收音机matlab仿真
湖南师范大学研究生课程论文论文题目调频收音机仿真课程名称现代通信技术姓名彭善华学号 ************ 专业电路与系统年级 2010级学院物理与信息科学学院日期(年月日) 2011年7月6日研究生课程论文评价标准湖南师范大学研究生处制摘要：调频收音机就是通过采用调频调频载波方式传输无线电信号的收音机，调频立体声收音机属于超外差式调频收音机。
本文利用Matlab软件的Simulink仿真工具箱来模拟仿真调频立体声收音机。
关键词：调频，超外差，调频立体声收音机一背景收音机作为现代的娱乐工具，与人们的生活紧密相关。
众所周知，音频及其他低频信号不能直接进行远距离传遍，而必须借助于高频无线电载波。
现如今电台大部分具备调频立体声广播的条件，调频立体声收音机也普及了。
目前，国际上较为普及的立体声广播都是双声道的，而且使用最多的是采用导频制式，我国也采用这种制式。
国际调频广播的标准频段规定为87～108MHz，我国、美国、欧洲一些国家就采用了这一标准频段。
也有些国家不采用这一频段，如苏联(采用64.5～73MHz)、日本(采用76～90MHz)及西欧的一些国家(采用87.5～104MHz)。
目前调频式或调幅式收音机，一般都采用超外差式，它具有灵敏度高、工作稳定、选择性好及失真度小等优点。
使载波频率按照调制信号改变的调制方式叫调频。
已调波频率变化的大小由调制信号的大小决定，变化的周期由调制信号的频率决定。
已调波的振幅保持不变。
调频收音机就是通过采用调频载波方式传输无线电信号的收音机。
由于采用的波长较短，因此传输的信号要比采用调幅方式传播信号的收音机要好很多，但是因为是短波，因此传播距离比较短。
二调频立体声收音机原理立体声收音机原理方框图如图1所示。
图1.超外差式收音机原理图高放，即高频放大器，功能是选择所要接收（频率）的信号，并对其进行低噪声放大。
由于设置了自动增益控制（AGC ）电路，它还可以保证在接收信号大幅度变化时，输出信号幅度基本上维持在一个允许的范围内。
电工电子实习收音机范文（2篇）
电工电子实习收音机范文为期四周的实习很快就结束了，在这四周的实习中我学到了很多在课本上学不到的知识，例如简单的焊接技术，非常感谢这次的培训，让我学到那么多，以后我也会更加的努力。
首先，我们都拿到自己的烙铁和工具包，练习最基本的焊接方法，一开始看老师演示的视频，感觉挺简单的，手就发痒，就想自己试一试，结果自己焊出的样子却非常难看，而且不如老师的结实。
经过老师的亲手指教，我发现了自己的问题，不急不躁的一步一步来，终于有点样子了。
第一次真正动手操作，我就知道了一个道理：眼高手低，看着简单的事情真正做起来并不容易。
做事要虚心，不要急躁。
接下来的实习我们就要焊接自己的万用表，我们每个人都领到一个盒子，里面装着很多的电阻以及各种不知道干什么用的东西，一下子懵了，根本想象不出这些东西怎么会通过焊接和组装，成为一个可以测量电压、电流、电阻的万用表呢?!老师首先是让我们看演示的视频，接下来又告诉了我们几个注意事项以及容易出现的问题，叮嘱我们不要着急，仔细认真地焊。
这一次，我碰到了一个比较棘手的问题，烙铁不好用，不沾锡，总是起球儿，这样不仅焊的速度慢了好多，而且影响美观。
焊了几个之后，我终于受不了了，便找老师来帮忙。
老师帮我在电路板上摩擦了一会儿，并且告诉我以后碰到这样的问题怎样处理。
经过老师的处理。
烙铁正常了，真的很感激各位老师的热心帮助。
焊接的这次成功，让我很贴切的意识到一丝不苟的重要性。
在工作和学习中，我们一定要一心一意，否则事倍功半，被别人甩到后面。
在我们焊接完成后，我们就要安装了，这是比较需要技巧的一步，不仅要紧紧地卡住电路板，而且要完全吻合，否则就会出现不理想的现象，比如液晶屏显示不稳定等。
安装好之后，我们都拿着自己的作品让老师检验，心里面非常地高兴，每个完成的同学脸上都洋溢着自豪的深情。
在实习的过程中，我也得到了老师们很好的教导和帮助，非常感谢你们的谆谆教诲，在以后的日子里我也会牢记老师们的教诲，更加努力做的更好。
我的七管超外差收音机设计
通信电子课程设计论文七管超外差收音机设计姓名:班级:学号:摘要:收音机里包括了选频滤波电路,振荡电路,高频小信号放大电路,变频电路,检波器,功率放大等很多电路.由天线接收的信号经输入回路选频后与本机产生的正弦波振荡信号（其频率总比输入回路选出的信号的频率高465kHz），共同送入变频级进行混频，产生一个固定的差频信号，即465kHz。
465kHz中频信号经过几级中频选频放大电路的放大后，加至检波级进行检波。
解调出的音频信号经前置低放级电压放大、功率放大级放大后推动喇叭发出声音。
关键词:变频；放大；检波;超外差Abstract: 7 transistors superheterodyne radio includes the radio frequency-selective filter circuit, oscillation circuit, high-frequency small signal amplification circuit, inverter circuit, detector, power amplifier, and many other circuits. From the antenna to receive the signal through the input circuit with the machine after the selected frequency sine wave generated by oscillations signal (its frequency is better than the signal input circuit selected high frequency 465kHz), co-conversion stages and into the mixer, resulting in the difference between afixed-frequency signal, ie 465kHz. 465kHz IF signal through several stages of IF amplification of frequency-selective amplifying circuit after the charge to detection level for detection. Demodulated audio signal through the pre-level low-level voltage amplification, power amplification stage amplified speakers to promote their voices heard. Keywords:conversion;amplification;detector;superheterodyne0 引言天空中有很多不同频率的无线电波，需要一个选择性电路，把所需的信号（电台）挑选出来，并把不要的信号“滤掉”，以免产生干扰。
关于收音机的介绍作文
关于收音机的介绍作文英文回答：A radio, also known as a wireless receiver, is a device that can receive radio waves and convert them into sound.It is a popular form of entertainment and information, allowing people to listen to music, news, talk shows, and other programs. Radios come in various forms, including portable handheld devices, car radios, and home stereo systems.Radios operate by receiving radio waves transmitted by radio stations. These waves are then converted intoelectrical signals, which are amplified and converted into sound by the radio's speakers. Most radios also have tuning controls that allow the user to select different radio stations and adjust the frequency to improve reception.Radios have been a staple in households for decades, providing a convenient way to access news and entertainment.With the advancement of technology, radios have evolved to include features such as digital displays, preset station buttons, and even the ability to connect to the internet for streaming audio.Radios are also important for emergency communication, as they can provide critical information during natural disasters or other emergencies when other forms of communication may be unavailable. In addition, radios are used in various industries for communication and broadcasting purposes.Overall, radios continue to be a popular and useful device for accessing a wide range of audio content and staying informed about the world around us.中文回答：收音机，又称为无线电接收机，是一种能够接收无线电波并将其转换为声音的设备。