摘要
当为控制系统选择数字信号输入/输出模块的接口类型时,正确理解Sinking Current(灌电流)和Sourcing Current(拉电流)的概念是非常重要的。讨论数字信号输入/输出接口/连接电路时会经常使用这些术语,在设计与负载连接的电路时,除了考虑电压、电流、功率等匹配外,更要注意灌电流型和拉电流型DI/O的区别,以使得连接电路更合理、可靠,逻辑表达更清楚和正确。
It is important to comprehend the concept of Sinking Current and Sourcing Current when choosing the DI/O module interface type for control system. Both of these are frequently used when discussing digital signal input/output interface and connect circuit. When the circuit connected to the load is designed, it should be paid great attention to the difference of DI/O between Sinking Current and Sourcing Current, besides considering the matching of voltage, current, and power, to ensure the connect circuit logical and reliable.
出处
《物联网技术》
2014年第3期49-51,共3页
Internet of things technologies
