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发明名称
一种音频功放电路
摘要
一种音频功放电路,由功率放大器、扬声器组成,其特征是把采样电阻R串联在扬声器回路中提取输出信号,并通过一个由有源滤波器构成的频率均衡电路连接到功率放大器的同相输入端,组成正反馈电路,通过调整正反馈电路的参数值使功率放大器工作在放大状态并调整其频率特性曲线,本实用新型可以改善音频功放电路的瞬态响应,提高频响,降低失真。
申请公布号
CN2501252Y
申请公布日期
2002.07.17
申请号
CN01266439.1
申请日期
2001.11.07
申请人
宋建平
发明人
宋建平;吴有珍
分类号
H03F1/32;H03F3/183
主分类号
H03F1/32
代理机构
代理人
主权项
1,一种音频功放电路,由功率放大器(6)、扬声器(7)组成,其特征是设有一个采样电阻(R),所述采样电阻(R)串联在扬声器(7)的接地回路中,一个频率均衡电路(8),所述频率均衡电路(8)由至少一个的有源滤波器组成,所述频率均衡电路(8)有一个输入端(1)、一个输出端(2)、一个公共端(3),所述输入端(1)、公共端(3)并联在采样电阻(R)两端,其中公共端(3)接地,所述频率均衡电路(8)的输出端(2)与功率放大器(6)的同相输入端(5)相连。
地址
210024江苏省南京市钱塘路2号306室
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