基于数字逻辑电路的音频信号放大设计与实现  

Design and Implementation of Audio Signal Amplification Based on Digital Logic Circuit

作　　者：张华忠[1] 李世琛 Zhang Huazhong;Li Shichen(Civil Aviation Flight University of China,Insititute of Electronic and Electrical Engineering,Guanghan 618307)

机构地区：[1]中国民用航空飞行学院航空电子电气学院,广汉618307

出　　处：《现代计算机》2022年第9期118-120,共3页Modern Computer

基　　金：2021年中央高校教育教学改革专项资金项目(E2021013)。

摘　　要：实现了对音频信号的无失真放大。利用OP07搭建信号放大电路,实现了对微小信号的不失真放大,结合RC高通滤波器实现对所需频率信号的提取,使用TDA2030集成运放搭建功率放大电路,实现对信号二次放大,成功驱动小型扬声器工作。针对运放单电源供电的情况,通过合理使用电阻和电容,解决了运放单电源供电存在的部分问题。The distortion free amplification of audio signal is realized.Using OP07 to build a signal amplification circuit to realize the undistorted amplification of small signals,combined with RC high pass filter to extract the required frequency signals,and using TDA2030 integrated operational amplifier to build a power amplification circuit to realize the secondary amplification of signals and successfully drive small speakers.According to the situation of single power supply of operational amplifier,some problems existing in single power supply of operational amplifier are solved by rational use of resistance and capacitance.

关 键 词：音频信号放大 OP07 TDA2030 单电源供电 

分 类 号：TN79[电子电信—电路与系统]