| 单片机在大功率功放电路中的应用 |
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| 引用本文： | 黄晓鑫,陈炳文,邓伟. 单片机在大功率功放电路中的应用[J]. 现代电子技术, 2006, 29(14): 134-135,138 |
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| 作者姓名： | 黄晓鑫 陈炳文 邓伟 |
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| 作者单位： | 揭阳职业技术学院,广东,揭阳,522000 |
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| 摘 要： | 大功率功放存在2大问题:第一是输出信号失真,主要有:非线性失真和削波失真,这会影响音质,严重时还会烧坏扬声器。第二是保护问题。主要有:扬声器短路保护、输出信号直流保护。保护做得不好,很容易烧坏功放输出管和扬声器。单片机具有强大的测控功能,可以用来解决大功率功放的失真校正和电路保护的问题。实践证明,本系统有较好的效果。将讨论如何用单片机ATMEL 89C2051实现这一目标。
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| 关 键 词： | 大功率功放 单片机 线性补偿 动态压缩 |
| 文章编号： | 1004-373X（2006）14-131-02 |
| 收稿时间： | 2006-04-04 |
| 修稿时间： | 2006-04-04 |
Application of Single Chip on High Power Amplifier |
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| HUANG Xiaoxin,CHEN Bingwen,DENG Wei. Application of Single Chip on High Power Amplifier[J]. Modern Electronic Technique, 2006, 29(14): 134-135,138 |
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| Authors: | HUANG Xiaoxin CHEN Bingwen DENG Wei |
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| Affiliation: | Jieyang Vocational Technical College,Jieyang,522000,China |
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| Abstract: | The high power amplifier exists two problems:first is distortion of the output signal,including nonlinear distortion and chopper distortion,this will affect the timbre,in the serious situation it will burn out the speaker.Second is the protection problem,mainly has shortcircuits protection for the speaker,direct current protection for the output signal.If the protection is not good,it is very easy to burn out the power amplifier output transistor and the speaker.single chip has functions of measure and control,it is applied to adjust distort and circuit protecting of high power amplifier.It has better effect.This paper discusses how to achieve this destination by ATMEL 89c2051 MCU. |
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| Keywords: | high power amplifier single chip compensation of linearity dynamic encapsulate |
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