音响放大器设计  

Design of audio amplifier

作　　者：张文娟[1] 

机构地区：[1]中国兵器工业第58研究所,四川绵阳621000

出　　处：《电子设计工程》2015年第6期110-113,117,共5页Electronic Design Engineering

基　　金：国家自然科学基金项目(61133016)

摘　　要：针对传统音响放大的设计缺点,结合现代电子技术,采用音响放大集成电路,设计了一种音响放大器。首先分析了音响放大器的工作原理及电路组成,然后详细介绍了电源电路设计、电源整流、电源滤波;前置放大器设计;功率放大器设计;最后,分别对有效频率、总谐波失真、额定输出功率、输入阻抗、输出阻抗等主要技术指标进行了调试。调试结果表明,主要技术指标均达到设计要求,该设计具有较好的性价比,音响输出非常理想。According to traditional audio amplifier design shortcomings, combined with modern electronic technology, using audio amplification IC, an approach of the audio amplifier is designed. Firstly,analysis the principle and circuit of the audio amplifier.then introduces the power circuit design, power rectifier, power filtering in detail; preamplifier design; PA design.At last, debugging the major technical indicators such as the effective frequency, THD, the rated output power, input impedance, output impedance etc. Debugging results showed that the main technical indicators have reached the design requirements, which has a good value for money, ideal for audio output.

关 键 词：音响放大器 电源 前置放大器 功率放大器 

分 类 号：TN72[电子电信—电路与系统]