一种基于AT电源的嵌入式计算机软关机电路设计  

A Design of Soft Power off Circuit for Embedded Computer with AT Power Supply

作　　者：徐伟 吴体康 蔡建军 

机构地区：[1]南京莱斯信息技术股份有限公司,南京210007

出　　处：《信息化研究》2013年第1期61-65,共5页INFORMATIZATION RESEARCH

摘　　要：文章介绍一种计算机软关机电路,通过模拟AT扩展(AT extended,ATX)电源信号和对AT电源输入端进行延时控制,实现类似于ATX计算机软关机的关机功能,通过一键操作,即可正常退出操作系统,又可断开机器电源。Embedded computer with AT power supply is frequently used in the industial and militray field. This article introduces a design of power off circuit. The circuit is a realization of power switch by simulating ATX power signal and delaying the time to turn off AT power supply. By this circuit a single power off op- eration can both turn off the operation system and shut down the machine Dower.

关 键 词：计算机主板标准电源(AT电源) 计算机 软关机 

分 类 号：TP331.1[自动化与计算机技术—计算机系统结构]