高品质功率放大器的改进  

The Improvement of Power Amplifier of High Quality

作　　者：魏纳新[1] 

机构地区：[1]台州学院信息与电子工程学院,浙江临海317000

出　　处：《台州学院学报》2005年第3期52-55,共4页Journal of Taizhou University

摘　　要：市场上销售的高品质功率放大器虽然品质很好,但电路复杂、价格昂贵,不易被消费者接受。自制的功率放大器价格便宜,不仅在0.4kHz-20kHz频率范围内放大倍数(Av)基本保持不变,而且在低频端(0.01kHz-0.4kHz)放大倍数提升,补偿了扬声器低频段的低响度,音质更佳。其性能稳定,基本上达到了高保真的效果。Power amplifier of high quality sold in the market are of fine quality, but it is hard for consumers to accept them because of its complicated circuits and high price. In this paper, we made an amplifier with low price, its magnifying multiple almost keeps unchanged in the range 0.4 - 20kHz, but also is strengthened in low frequency （0.01 - 0.4kHz）, which makes up for the low volume of low - frequency section of loudspeaker and makes its tone quality better. On the whole, its performance is good and it has hi -fi effect.

关 键 词：高品质 功率放大器 改进 

分 类 号：TN722.75[电子电信—电路与系统]