| DM制丁类放大器的工作效率与转换效率 |
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| 引用本文： | 张学军,崔德怀.DM制丁类放大器的工作效率与转换效率[J].湖南城建高等专科学校学报,2008(3):44-46. |
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| 作者姓名： | 张学军 崔德怀 |
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| 作者单位： | 湖南城市学院物理与电信工程系,湖南益阳413000 |
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| 基金项目： | 湖南省“十一五”规划重点课题（XJK06AZC010）;湖南城市学院科研基金资助项目 |
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| 摘 要： | 分析了DM制丁类放大器的工作效率、输出功率和转换效率，并讨论了提高其输出功率和转换效率的方法．得到如下结论：①CDA双管输出功率为单管的4倍；②CDA双管输出电路工作效率可大于90％、最大的转换效率可达55．2％；③提高CDA双管输出电路电源电压可以提高其工作效率，增大音频信号输出功率，增大开关管能给出的最大输出功率．
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| 关 键 词： | 丁类放大器 增量调制 工作效率 输出功率 转换效率 |
Work Efficiency and Conversion Efficiencyof DM System Class D Amplifier |
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| ZHANG Xue-jun,CUI De-Huai.Work Efficiency and Conversion Efficiencyof DM System Class D Amplifier[J].Journal of Hunan Urban Construction College,2008(3):44-46. |
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| Authors: | ZHANG Xue-jun CUI De-Huai |
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| Affiliation: | (Department of Physics and Electric Information Engineering, Hunan City University, Yiyang, Hunan 413000, China) |
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| Abstract: | The efficiency, output power and conversion efficiency of DM system Class D Amplifier are analyzed. The methods of improving the output power and conversion efficiency are discussed. The following conclusions are made out as follows： ①The output power of the double-tube CDA is four times of the single-tube CDA; ②The efficiency of the output circuit of double-tube CDA is above 90%, the conversion efficiency is up to 55.2%; ③Improving the double-tube CDA output circuit power voltage can improve its work efficiency, increase the output power of audio signals, and increase the greatest output power given by switch tube. |
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| Keywords: | Class D amplifier delta modulation work efficiency output power conversion efficiency |
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