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1、河南工程学院毕业设计摘要低频功率放大器是目前普遍应用于音频放大上的一种放大器，本方案采用分立MOS管IRF640和IRF9640组成，分立元件功放的优点是可以对工作状态和性能进行逐级调整，具有通频带宽，负载能力强，高保真等优点。本设计的低频功率放大器同时还具有测量显示功率输出、电源供给功率和整机效率的功能。本文首先对功率放大器的课题背景作简要的说明，随后对功率放大器的一些基础知识进行介绍。此外，相应的介绍低频功率放大器的各单元电路———前置放大、音调控制电路、音量控制电路和功率放大部分及功率测量的组成与
2、工作原理，详细叙述了前置放大、功率测量电路部分。最后，本文具体叙述实用低频功率放大器的安装与调试，并对电路在工作中易出现的失真情况做了细致的分析。关键词：低频功率放大器功率输出音调控制电路音量控制电路27河南工程学院毕业设计AbstractLow-frequencypoweramplifieriswidelyusedintheaudioamplificationonanamplifier,theprogramusingdiscreteMOStubeIRF640andIRF9640component,di
3、scretepoweramplifierhastheadvantageoftheconditionandperformancecanbeadjustedstepbystep,withthepass-bandbandwidth,loadability,fidelityandsoon.Thedesignoflow-frequencypoweramplifierisalsoshownwithmeasuredpoweroutput,powersupply,powerandefficiencyoftheunitf
4、unctions.ThispaperfirstabriefbackgroundofthesubjectPAinstructions,followedbysomebasicknowledgeofthepoweramplifieraredescribed.Inaddition,thecorrespondinglow-frequencypoweramplifiersintroduceeachunit---preamplifiercircuit,tonecontrolcircuit,thevolumecontr
5、olcircuitandpoweramplifiersectionandpowermeasurementofthecompositionandworkingprinciple,detaileddescriptionofthepreamplifier,powermeasurementcircuitpart.Finally,thispaperdescribestheutilityofspecificlow-frequencypoweramplifierinstallationandcommissioning
6、,andthecircuitintheworksituation,andsopronetodistortioninthedetailedanalysis.Keywords: Low-frequencypowerAmplifieroutputVolumecontrol,Tonecontrolcircuitcircuit 提供更好的翻译建议感谢您为Google翻译提供翻译建议。27河南工程学院毕业设计目录摘要·················································
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8、···························4第一章功率放大器技术指标概述·······························································6第一节功率放大器参数第一节······································································6第二节功率放大器分类······················
