| 高效率G类音频功率放大器的分析与设计 |
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| 引用本文： | 夏守行.高效率G类音频功率放大器的分析与设计[J].电声技术,2009,33(8):37-41,59. |
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| 作者姓名： | 夏守行 |
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| 作者单位： | 浙江工贸职业技术学院电子工程系,浙江,温州,325000 |
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| 摘 要： | 在晶体管是理想的情况下推算G类功放的效率曲线，再根据实际情况估算G类功放的大致平均效率．得出G类功放的电源效率随电源组数增加而增大的具体数值关系。利用A／D转换技术原理提出一种数字切换G类功放电源的全新方法，使较少的电源数组合出较多的电源组数，这种方法比常规幅值直接切换电源的G类功放具有更高的效率。对G类功放特有的切换干扰、损耗和速度等细节问题指出了解决方案。
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| 关 键 词： | G类功放效率 效率曲线 平均效率 数字切换 切换干扰 |
Analysis and Design of High Efficiency G-type Audio Power Amplifier |
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| XIA Shou-xiag.Analysis and Design of High Efficiency G-type Audio Power Amplifier[J].Audio Engineering,2009,33(8):37-41,59. |
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| Authors: | XIA Shou-xiag |
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| Affiliation: | Department of Electronic Engineering;Zhejiang Industry & Trade Polytechnic;Wenzhou Zhejiang 325000;China |
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| Abstract: | In the case that transistors are ideal, efficiency cure of G-type amplifier is calculated, then its approximate average efficiency according to practical situations is evaluated, and the detailed value relationship between power supply efficiency and group number of power supply in G-type amplifier is figured out. Technical principles of A/D converter is used to raise a brand-new method to switch the power supply of G-type amplifier by digital method. This method can create more power supply groups with les... |
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| Keywords: | G-type power amplifier efficiency curve average efficiency digital switch switching disturbance |
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