应用于D类功放的新型三角波发生器设计
Design of a New Triangular Wave Generator Applied to D-class Power Amplifiers
李良钰 1蔡教武 1乔瑞杰 1黄春平1
作者信息
摘要
阐述针对D类音频功放中三角波信号的正向上升与负向衰减对称性不好和线性度不高的问题,借助Mutisium仿真工具,通过加入二极管、变阻器,引入恒流源的方法,对555组成的三角波发生器的充放电回路改进和优化,设计了适应D类音频功放参数要求的三角波产生电路,并形成实际应用电路,提高了三角波信号的正向上升与负向衰减对称性和线性度.
Abstract
This paper expounds the problem of poor symmetry and low linearity of the positive rise and negative attenuation of triangular wave signals in Class D audio amplifiers.Using the Mutisum simulation tool,the charging and discharging circuit of the triangular wave generator composed of 555 is improved and optimized by adding diodes,variable resistors,and introducing a constant current source.A triangular wave generation circuit that meets the parameter requirements of Class D audio amplifiers is designed,and a practical application circuit is formed to improve the symmetry and linearity of the positive rise and negative attenuation of triangular wave signals.
关键词
D类功放/三角波/对称性/线性度Key words
D-class amplifier/triangular wave/symmetry/linearity引用本文复制引用
出版年
2024
NETL
NSTL
万方数据