低频功率放大器的设计类论文

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1、低频功率放大器的设计论文[2]实用低频功率放大器主要应用是对音频信号进行功率放大，本文介绍了具有弱信号放大能力的低频功率放大器的基本原理、内容、技术路线。整个电路主要由稳压电源、前置放大器、功率放大器、波形变换电路和保护电路共五部分构成。稳压电源主要是为前置放大器、功率放大器提供稳定的直流电源。前置放大器主要是电压的放大。功率放大器实现电流、电压的放大。波形变换电路是将正弦信号电压变换成规定要求的方波信号。设计的电路结构简洁、实用，充分利用到了集成功放的优良性能。实验结果表明该功率放大器在带宽、失真度、效率等方面具有较好的指标、较高的实用性,为功率放大器的设计提供了广阔的思路关键词:转换

2、电路，放大级电路，功率放大，稳压电源电路ABSTRACTThispaperbrieflyintroducedthebasicprinciple，contentsandtechnicalrouteofthepoweramplifieroflowfrequencysigna1basedontheKnowledgeofanalogelectronicstechnology(Theentirecircuitisdividedintofourmajorparts(Thepartofthesupply，preamplifier，poweramplifierandwave—changingcircui

3、t(Thestructureofthiscircuitisconciseandfunctional.Keywords:Sinewave–squarewaveconversioncircuit,Weaksignalpreamplifiercircuit,Poweramplifiercircuit,Self-madepowersupplycircuit目录摘要„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„?ABSTRACT„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„?1绪论........................................

4、.....................52总体方案设计......................................................72.1总体方案论证....................................................72.2单元模块方案论证与比较:..........................................72.2.1波形变换电路:7................................................2.2.2弱信号前置放大级:..................

5、...........................82.2.3功率放大级:.................................................82.2.4自制稳压电源:................................................92.3方案选择........................................................93单元模块设计:...................................................93.1各单元模块功能介绍及电路设计:.....

6、...............................93.1.1波形变换电路:................................................93.1.2弱信号前置放大级电路:........................................113.1.3功率放大级电路:.............................................133.1.4自制稳压电源电路:...........................................153.2特殊器件的介绍.................

7、...............................154系统调试:......................................................174.1.稳压电源的调试:...............................................174.2.前置放大电路和波形转换电路的调试:...............................17........