文档介绍：HAOJING COLLEGE SHAANXI UNIVERSITY OF SCIENCE & TECHNOLOGY
毕业设计说明书(论文)
题目: 音频功率放大器的设计
Design of Audio Power Amplifier
ABSTRACT
Electronic information technology almost dominates development of entire industries. With the progress and development of electronic technology in power amplifier design features are constantly updated. Power amplifiers in home appliances, digital products are increasingly being used in applications. It closely related to our daily life. With the improvement of living standards, there is a growing emphasis on visual, audio enjoyment. In most cases, it increases system performance, such as better sound effects, which promote consumers to buy products, it is an important factor. Audio power amplifier and other electronic devices as audio level after the amplifier, its main role is to pre-level audio signal for power amplification to drive the load of work, get a good sound. Stereo audio power amplifier is also electro-acoustic devices such as the main part of the energy consumption of power.
Currently, analog amplifier audio power amplifier still the mainstream product, analog amplifier has experienced decades of continuous improvement and perfection of the technology has developed to a peak. In this paper, our own design of LM1875 audio amplifier for audio applications has very low distortion and high-quality sound, and also has a high gain, fast slew rate, wide power bandwidth, large output voltage swing, high current power capacity and very wide range of other characteristics. By using large loop negative feedback to control voltage output, and together with the dual-power rectifier circuits, amplifiers with pensation, gain control is about 26dB. It can be used with high-quality audio systems, stereo player and so on.
KEY WORDS: LM1875-power chips, audio power amplifier, high-fidelity
音频功率放大器的设计
摘要
电子信息技术几乎主宰了整个电器行业的发展,随着电子技术的进步发展在功率放大器的设计上功能也不断更新。功率放大器在家电、数码产品中的应用也越来越广泛,与我们日常生活有着密切关系。随着生活水平的提高,人们越来越注重视觉,音质的享受。在大多数情况下,增强系统性能,