摘要:21世纪的到来使得人们对科技的要求不断提高,随着人们居住条件的改善,高保真音响设备和高档的家庭影院也逐渐兴起。本文主要目的是设计OTL音频功率放大电路与TDA2030功率放大电路;其次,将两种音频放大器作比较,从而分析两者之间的优缺点。前者使用2N3904和2N2907的互补放大器实现功率放大,后者由TDA2030的功率放大集成电路实现功率放大,并通过相应公式计算表得出功率,进而可以进行效率高低的比较。实验由Multisim10。0仿真软件做出的模拟电路图,通过示波器的观察对理论推导进行了辅助分析,并对实验电路进行了性能仿真,最后,实际实验结果与理论推导和仿真分析结果一致。验证了试验的可行性。91916
毕业论文关键词:Multisim10。0,OTL,TDA2030功率放大电路,音频功率放大器,高效率
Abstract:In the twenty-first Century, people’s demands for science and technology have been continuously improved。 With the improvement of people’s living conditions, high fidelity audio equipment and high-end home theater are also gradually rising。 This paper uses the OTL audio power amplifier circuit and power amplifier circuit TDA2030two audio amplifier for comparison, the former using 2N3904 complementary amplifier and 2N2907 power amplifier, which consists of TDA2030 power amplifier integrated circuit to realize power amplification, and through the corresponding calculation formula to calculate power table, which can be used to compare the efficiency of。 The analog circuit experiment byMultisim10。0 simulation software is made, through the oscilloscope to observe the aided analysis of the theory, and the experimental circuit performance simulation is carried out, finally the actual experimental results and the theoretical analysis and simulation results。 The feasibility of the experiment is verified。
Keywords: multisim10。0, OTL, tda2030poweramplifier, audio power amplifier, high efficiency
目 录
1 绪论 5
1。1 音频放大器设计背景 5
1。2 音频放大器的发展 5
1。3 音频放大器设计内容及意义 6
1。3。1 论文主要内容 6
1。3。2 研究的意义 6
2 OTL音频功率放大器 6
2。1 乙类功放 6
2。1。1 乙类功率放大器计算 8
2。1。2 乙类功率放大器的仿真 9
2。2 OTL功放 10
2。2。1 模拟OTL功率放大电路的原理 10
2。2。2 OTL功率放大器的电路特点 11
2。2。3 OTL功率放大器的仿真 11
2。2。4 OTL功率放大器计算 13
3 D类功放 13