【正文】 .................................................9 音頻功率放大器的設(shè)計(jì)及 PCB 制作 ..............................................................10 集成功放 TDA7294 電路設(shè)計(jì) ...............................................................10 功率放大器的 PCB 制作 ....................................................................... 11 集成功放 TDA7294 芯片的散熱 ........................................................... 11 直流控制芯片 TA7630P 集成音頻濾波電路 ..................................................12 MP3 音頻解碼電路 ...........................................................................................13 MP3 音頻解碼器的功能介紹 ................................................................13 紅外線遙控器的功能介紹 ...................................................................13 單片機(jī)控制電路 ................................................................................................14 電源電壓顯示的處理器 Atmega8 單片機(jī)簡(jiǎn)介 ...................................14 功率采集處理電路 At89C52 單片機(jī)小系統(tǒng)簡(jiǎn)介 ...............................15 II 實(shí)時(shí)運(yùn)行功率的顯示 ........................................................................................16 直流電壓電流電量檢測(cè)模塊介紹 ........................................................16 液晶顯示電路介紹 ................................................................................17 功率顯示系統(tǒng)的電路設(shè)計(jì) ....................................................................18 電壓比較器的應(yīng)用電路設(shè)計(jì) ............................................................................18 集成運(yùn)放 LM324 介紹 ............................................................................18 利用 LM324 集成運(yùn)放設(shè)計(jì)的 16路電壓比較器 LED 驅(qū)動(dòng)電路 ..........19 4 系統(tǒng)軟件設(shè)計(jì) .............................................................................................................20 微處理器的 程序 開(kāi)發(fā)環(huán)境 ................................................................................20 At89C51 程序開(kāi)發(fā)環(huán)境介紹 ................................................................20 Atmega8 程序開(kāi)發(fā)環(huán)境介紹 ................................................................20 程序設(shè)計(jì)及流程圖 ............................................................................................20 功率檢測(cè)模塊及顯示的程序設(shè)計(jì) ........................................................20 功放電源電壓采集與顯示的程序設(shè)計(jì) ................................................22 5 系統(tǒng)調(diào)試及 性能測(cè)試 .................................................................................................24 直流電源的調(diào)試 ................................................................................................24 前級(jí)濾波放大電路的調(diào)試 ................................................................................24 信號(hào)檢測(cè)記錄 ....................................................................................................24 音頻功率放大器的放大性能測(cè)試 ........................................................24 前級(jí)濾波電路的性能測(cè)試 ....................................................................24 6 結(jié) 論 .....................................................................................................................28 7 參考文獻(xiàn) .....................................................................................................................29 8 附錄 .............................................................................................................................30 9 致 謝 .....................................................................................................................32 天津 職業(yè)技術(shù)師范大學(xué) 2021 屆 本科生 畢業(yè)設(shè)計(jì) 1 1 緒論 研究的背景與意義 音樂(lè)的發(fā)展史從古至今已有大量的制作，在我們的今天，音樂(lè)是流行、通俗、戲曲、民歌等等一片繁榮；各種流行音樂(lè)、影視制作深深融入我們的生活。32V, and the Power amplifier source indicates the actualtime working voltage by adopting ad Collecting voltage and dealing with 51 single chip. The volume, highlow sounds and Equilibrium degree are realized by 4pcs manual electric resistance of TA7630P speaker is based on the electric circuit that able to Convert FM and MP3 File decoding to audio is a multifuctional and intelligent speaker that possesses Remote controller by infrared ray,volume + , last/next songs, optional Output audio frequency, switchable MP3, FM external Audioin. What is more, there are actualtime working Power Consumption indicates by LCD12864 while playing music, and 16pcs Diodes keep twinkling according to the changing Power Consumption. It works based on the Audioin signal and 16way voltage parator. Key Words： Speaker。 關(guān)鍵詞 ： 音響； MP3 解碼； 環(huán) 變壓器； TDA7294； TA7630P ABSTRACT Music, Film and TV now are more and more popular along with the increasing of living standard. And,speaker is widely used for household and working. However, the performance of speaker now plays an important role for user,therefore, the intelligent speaker had been launched by designer in order to offer betterperformance speaker to speaker hobbyist. This kind of speaker takes AB audio frequency and integrated circuit TAD7294 as main Power reaches 40W*2 and THD = 10%. It is a multifunctionally intelligent and preferable speaker that possess actualtime power consumption indicator,power lighting,supply voltage indicator, receiver, MP3 Digital file decoding, adjustable AF audio frequency. Power amplifier source is provided by positive and negative DC voltage with working voltage 177。 32V可調(diào)，電源用ad 采集電壓通過(guò) 51 單片機(jī)處理后在數(shù)碼管顯示出實(shí)時(shí)電壓。 功放的電源需要正負(fù)直流電壓提供，工作電壓在 177。 天津職業(yè)技術(shù)師范大學(xué) Tianjin University of Technology and Education 畢 業(yè) 設(shè) 計(jì) 專(zhuān) 業(yè)： 電氣技術(shù)教育 班級(jí)學(xué)號(hào)： 電氣 1012 11 學(xué)生姓名： 賴惠平 指導(dǎo)教師： 李宏偉 副教授 二 〇 一五年六月 天津職業(yè)技術(shù)師范大學(xué)本科生畢業(yè)設(shè)計(jì) 智能音響系統(tǒng)開(kāi)發(fā)設(shè)計(jì) Development and design of intelligent sound system 專(zhuān)業(yè)班級(jí)： 電氣 1012 班 學(xué)生姓名： 賴惠平 指導(dǎo)教師： 李宏偉 副 教授 學(xué) 院： 自動(dòng)化與電氣工程學(xué)院 2021 年 6 月 摘 要 伴隨著人們生活水平提高，音影視越來(lái)越受到人們的歡迎，而音響在眾多場(chǎng)地的用途越來(lái)越多，家庭、工作隨處可見(jiàn)。10V ~ 177。通過(guò) TA7630P 電路 4個(gè)手調(diào)電阻來(lái)調(diào)節(jié)音響的音量、高低音及左右平衡度。10V ~ 177。 MP3 Decoder。如今科學(xué)技術(shù)提高，經(jīng)濟(jì)發(fā)展速度的飛快，人民生活水平不斷 的提高，影視設(shè)備是人們娛樂(lè)產(chǎn)品首選之一。在這