[音频功率放大器设计.docVIP

《课 程 设 计》 音频功率放大器 名 称: 电子信息专业基础课程设计2012/12/27至 2012/01/06 指导教师: 教师评语: 评阅成绩： 评阅老师： 摘要 设计OTL音频功率放大器，功率放大器的作用是给音响放大器的负载RL（扬声器）提供一定的输出功率。当负载一定时，希望输出的功率尽可能大，输出的信号的非线形失真尽可能的小，效率尽可能的高。本实验设计的是一个 OTL 功率放大器，该放大器采用TDA2030音频放大器芯片，TDA2030是高保真集成功率放大器芯片,输出功率大于10W,频率响应为10~1400Hz，其内部电路包含输入级、中间级和输出级,且有短路保护和过热保护,可确保电路工作安全可靠，采用正输出单电源供电。用multisim软件对OTL功率放大器进行仿真实现。根据实例电路图和已经给定的原件参数，使用multisim软件模拟电路，并对其进行静态分析，动态分析，显示波形图，计算数据等操作。 关键词： OTL功率放大电路； multisim软件仿真； TDA2030音频放大器； Abstract The design of OTL audio power amplifier, power amplifiers function is to the audio amplifier load RL ( speaker ) provides certain output. When the load is constant, hope output power is as large as possible, the output signal of the non linear distortion as small as possible, efficiency as high as possible. The experimental design is a OTL power amplifier, the amplifier using TDA2030 audio amplifier chip, TDA2030 is high fidelity integrated amplifier chip, the output power is greater than 10W, frequency response of 10~1400Hz, its internal circuit includes an input stage, middle stage and an output stage, and a short circuit protection and overheat protection circuit, can ensure the working safety reliable, the positive output of single power supply. Using Multisim software to the OTL power amplifier simulation. According to the circuit diagram and has given the original parameter, use Multisim software to simulate the circuit, and carries out the static analysis, dynamic analysis, waveform display diagram, calculation data operation. Key words: OTL power amplifying circuit; Multisim Simulation; TDA2030 audio amplifier; 目录 1、音频功率放大器 4 2、Multisim 2001程序概论 6 2.1 Multisim简介 6 2.2 Multisim 2001功能及特点 6 2.3软件的运行环境 7 3、设计内容及目的 7 3.1设计目的 7 3.2设计内容及要求 8 3.3实