《D类音频放大器的研究》-毕业论文.docVIP

D类音频功率放大器的研究 摘要：音频放大器已经有快要一个世纪的历史了,从最早的电子管放大器的第一个应用就是音频放大器。然而直到现在为止,它还在不断地更新、发展、前进。主要因为人类的听觉是各种感觉中的相当重要的一种,也是最基本的一种。为了满足它的需要,有关的音频放大器就要不断地加以改进。 本论文主要介绍D类音频功率放大器与AB类音频功率放大器相比的优点，并研究其工作原理以及与其他功率放大器的优势。 通过查阅资料、分析问题、设计方案、解决问题等等步骤，在历经一学期的设计与学习，总结出D类音频放大器在实际应用中带来的好处，例如可以延长电池寿命，产生的热量低等等。 关键词：放大器、高效率、音频 D class of audio power amplifier The author Li Chengcheng Guiding teacher Xu Yubao Abstract：Audio amplifier has is a century of history, from the earliest tube amplifiers first application is audio amplifier. However, up to now, it will continue to update, development and progress. Mainly because of the human auditory is all sorts of feeling of quite important, also is the most basic one. In order to meet the need of it, the audio amplifier will be constantly improved. This paper mainly introduces D class audio power amplifier and AB kind of audio amplifier the advantages compared, and study its working principle and the advantage with other power amplifier. Through the data access and problem analysis, design, solve problems and so on step, after a semester in the design and study, summarizes D class audio amplifier in the practical application of the benefits of, for example, can extend battery life, produce the quantity of heat low, and so on. Key words：Amplifier, high efficiency, audio 目 录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc326849711 1 绪论 PAGEREF _Toc326849711 \h 3 HYPERLINK \l _Toc326849712 1.1课题概述 PAGEREF _Toc326849712 \h 3 HYPERLINK \l _Toc326849713 1.1.1 D类功率放大器简介 PAGEREF _Toc326849713 \h 3 HYPERLINK \l _Toc326849714 1.2 研究背景 PAGEREF _Toc326849714 \h 4 HYPERLINK \l _Toc326849715 1.3论文研究目标和意义 PAGEREF _Toc326849715 \h 5 HYPERLINK \l _Toc326849716 2 D类功率放大器的分析 PAGEREF _Toc326849716 \h 5 HYPERLINK \l _Toc326849717 2.1其它类型的放大器的分析 PAGEREF _Toc326849717 \h 5 HYPERLINK \l _Toc326849718 2.1.1 A类功率放大器的优缺点 PAGEREF _Toc326849718 \h 5 HYPERLINK \l _Toc326849719 2.1.2 B类功率放大器的优缺点 PAGEREF _Toc326849719 \h 5 HYPERLINK \l _Toc326849720 2.1.3 AB类功率放大器的优缺点