声频功率放大器新旧标准解析及相关性能参数检测研究  

Analysis of new and old standard and detection of related performance parameters for audio power amplifier

作　　者：邝永辉 Kuang Yonghui(Guangdong Quality Supervision Testing Station for Electroacoustic Product,Jiangmen Guangdong,529000)

机构地区：[1]广东省质量监督电声产品检验站,广东江门529000

出　　处：《电子测试》2018年第2期51-53,共3页Electronic Test

摘　　要：声频功率放大器是音响系统的重要组成部分,是声频信号经过声频功率放大器放大以后获得足够功率馈送给扬声器完成声音信号的再现。本文首先介绍了甲类功率放大器、乙类功率放大器、甲乙类功率放大器、定阻式功率放大器、定压式功率放大器的工作原理;再介绍了声频功率放大器新旧检验标准SJ/T 10406-2016《声频功率放大器通用规范》和SJ/T 10406-1993《声频功率放大器通用技术条件》;最后介绍了声频功率放大器相关性能参数的检测。The audio power amplifier is an important part of the audio system,and the audio signal is amplified by the audio power amplifier to obtain sufficient power to feed the speaker to complete the reproduction of the sound signal.This paper first introduces Class A power amplifier,Class B power amplifier,Class AB power amplifier,constant resistance type power amplifier,constant voltage power amplifier;and then introduced the audio amplifier old and new test standard S J/T 10406-2016({general specification for audio power amplifier〉〉、S J/T 10406-1993《general requirements for audio power amplifier》;finally introduces the detection of audio power amplifier performance parameters.

关 键 词：声频功率放大器 SYS-2722音频分析仪 增益限制的有效频率范围 总谐波失真加噪声(THD+N) 

分 类 号：TN912.2[电子电信—通信与信息系统]