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Microcontroller-based Low-frequency Power Amplifier Design
Author(s): 
Pages: 16-18,22
Year: Issue:  2
Journal: Instrumentation Technology

Keyword:  NE5532场效应管;
Abstract: 设计了一种低频功率放大器,主要由前置放大、功率放大、稳压电源及输出测量显示等电路组成.系统采用STC89C52RC单片机为控制核心,使用高品质的双运算放大器NE5532进行小信号放大和带阻滤波,功放采用MOS晶体管,具有输出功率、电源功率、整机效率等测量功能,结果以数字显示.该机音响效果优良、信噪比高、频带宽、失真小、输入灵敏度高,有较大的功率余量和动态范围,可以高保真地还原出逼真的清纯音响.
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