This application note’s primary goal is to provide an easy-to-understand primer for users who are not familiar with 4-20mA current-loops and their applications. Some of the many topics discussed ...
A recent Design Idea (DI), “Silly simple precision 0/20mA to 4/20mA converter,” by prolific DI contributor Stephen Woodward uses the venerable LM337 regulator in a creative configuration along with a ...
The humble 4 to 20mA current loop has been a faithful servant of process control systems for decades, largely down to its reliability and simplicity. The underlying principles of the current loop are ...