脉宽调制型正弦波铃流信号源的研究  

A Research of the Modulating Pulse Wids Model Sine Wave Bell Cuqrent Sourse

作　　者：王德志[1] 刘秀贤[1] 韩德荣[1] 畅玉亮[1] 

机构地区：[1]沈阳化工学院自动化系

出　　处：《沈阳化工学院学报》1989年第1期25-33,共9页Journal of Shenyang Institute of Chemical Technolgy

摘　　要：本文介绍了采用新的脉宽调制原理和微电脑技术,研制出的25赫兹正弦波铃流源。并对该铃流源做了较客观的估价,提出了改进设想和予期达到的目标。In this paper, using a new principle of PWM and the technique of storage-system in a microcomputer are discribed, and a 25 Hz sinusidal bell current source has been developed. The bell current source is objectively evaluated. Finally improvement conception and expected attainment target are proposed.

关 键 词：铃流源 脉调制 正弦波 电话交换 

分 类 号：TN916.42[电子电信—通信与信息系统]