OTL音频功率放大电路的分析与设计  

Analysis and Design of OTL Audio Power Amplifier Circuit

作　　者：张倩 ZHANG Qian(School of Automation, Shenyang Institute of Engineering, Shenyang 110136, Liaoning Province)

机构地区：[1]沈阳工程学院自动化学院,辽宁沈阳110136

出　　处：《沈阳工程学院学报（自然科学版）》2018年第2期171-174,共4页Journal of Shenyang Institute of Engineering:Natural Science

摘　　要：功率放大电路广泛的应用于仪器仪表、自动控制、电子信息等工业领域。OTL功率放大电路是采用单电源供电并且无输出电容耦合的功率放大电路。该设计采用NE5532音频集成运放构成电压放大电路提高电压增益,采用OTL功率电路放大电流和电压,实现功率放大后驱动负载工作,直流稳压电路用于系统供电。利用Multisim软件设计了一种用于音频频带的功率放大电路,电路设计合理、输出波形失真度低,可以广泛应用于音频功率放大设备中。The power amplifier circuit is widely used in instruments and meters,automatic control,electronic information industry and so on. The OTL power amplifier circuit is a power amplifier with single power supply and no output capacitance coupling. This design adopts the NE5532 audio integrated operational amplifier to make voltage amplification circuit to improve the voltage gain. The OTL power circuit is used to magnify the current and voltage,realize the driving load after power amplification,and the dc stabilizing circuit is used to power the system. In this paper,Multisim software is utilized to design an audio frequency band power amplifier circuit which is reasonable design and its output waveform distortion is low,so it can be widely used in audio power amplifier devices.

关 键 词：功率放大 音频 OTL NE5532 

分 类 号：TN721[电子电信—电路与系统]