| 低频功率放大器的设计与实现 |
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| 引用本文： | 丁丁,丁炜.低频功率放大器的设计与实现[J].兰州石化职业技术学院学报,2010,10(4):17-19. |
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| 作者姓名： | 丁丁 丁炜 |
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| 作者单位： | 兰州石化职业技术学院电子电气工程系,甘肃兰州730060 |
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| 基金项目： | 甘肃省重大科研基金，兰州石化职业技术学院科研基金 |
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| 摘 要： | 论述了基于AT89C51单片机的低频功率放大器的设计与实现。采用电压放大电路、功率放大电路和稳压电源电路构成功率放大器的主体,配以高精度采样电阻及12位A/D转换器,实现了通频带30Hz～50kHz范围内的低频放大,保证了失真度小于1.2%,具有较高的精度与稳定性。实验结果表明电路功能和性能指标均已达到设计要求。
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| 关 键 词： | 低频功率放大器 电压放大电路 带阻滤波器 |
Design and Accomplishment of Low Frequency Power Amplifier |
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| DING Ding,DING Wei.Design and Accomplishment of Low Frequency Power Amplifier[J].Journal of Lanzhou Petrochemical Vocational College of Technology,2010,10(4):17-19. |
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| Authors: | DING Ding DING Wei |
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| Institution: | (Department of Electronic and Electric Engineering,Lanzhou Petrochemical College of Vocation Technology,Lanzhou 730060,China) |
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| Abstract: | This paper presents a discussion on AT89C51 SCM design and accomplishment of low frequency power amplifier.The main body is composed of voltage amplifier circuit,power amplifier and preamplifier.Matched with high-accuracy sampling electric resistance and 12 A/D converters,the low frequency amplifier on the range of 30Hz~50 KHz has been accomplished,making sure that the distortion factor is smaller than 1.2%,with higher accuracy and stability.According to the simulation results,the function and performance of the whole circuit can meet all the requirements. |
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| Keywords: | low frequency power amplifier voltage preamplifier circuit band stop filter |
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