故障-安全型输出电路的研制  

DEVELOPMENT ON FAIL-SAFETY MODEL OUTPUT CIRCUIT

作　　者：杜雪芳[1] 魏臻[1] 陆阳[1] 韩江洪[1] 

机构地区：[1]合肥工业大学计算机与信息学院

出　　处：《合肥工业大学学报（自然科学版）》1997年第6期52-55,共4页Journal of Hefei University of Technology：Natural Science

摘　　要：一个电路输出直流信号时，往往需要快速地、准确无误地控制其输出信号的通断。文章介绍一种必须由一定频率的脉冲信号控制，才有直流信号输出的电路，且当电路中任一元件损坏时，输出均为低电平。整体电路符合故障－安全特性的要求。It is usually required to control quickly and accurately output signal's on-off of a circuit as it is outputing DC signal. This paper presents a kind of output circuit,which has DC signal output only when it is controled by pulse signal of fixed frequtncy,and its output is low electrical level when any component damaged in circuit.Integral circuit accords with the demands of fail-safety specific property.

关 键 词：故障-安全 方波脉冲控制 直流信号输出 

分 类 号：TN871[电子电信—信息与通信工程]