基于电子管SEPP电路的高保真耳机放大器设计  

Design of High Fidelity Headphone Amplifier Based on Vacuum Tube SEPP Circuit

作　　者：周静雷[1] 李城梁[1] 齐博[1] 

机构地区：[1]西安工程大学电子信息学院,陕西西安710048

出　　处：《电声技术》2009年第12期28-32,共5页Audio Engineering

摘　　要：以包含自举电路的共阴式倒相电路作为输入级,以SEPP电路作为输出级,设计了一款高保真耳机放大器。基于电子管微变等效电路分析方法,计算出输入级和输出级电路的主要参数,并对整个放大器的开环和闭环参数进行了分析,文中还采用客观测量和主观评价的方式对该放大器的性能进行了说明。A high fidelity headphone amplifier is designed in this paper, which contains the co-cathode inverse phase circuit including the bootstrapping as the input entry, and SEPP circuit is used as the output entry. Based on analysis of vacuum tube slight variation equivalent circuit, the primary parameters of the input and output entry are calculated and the open-loop and closed-loop parameters of the whole amplifier are analyzed. In the end, the function of the amplifier is explained through impersonal-measurement and subjective evaluations.

关 键 词：共阴式倒相 自举电路 SEPP 耳机放大器 电子管 微变等效 

分 类 号：TN72[电子电信—电路与系统]