Design of High Precision Digital AC Constant Current Source
Hongzheng Liu, Haiyan Yuan, Zhen Shi, Shougang Sui, Kuan Wang · Proceedings of the 2017 3rd International Forum on Energy, Environment Science and Materials (IFEESM 2017) · 2018
This paper introduces the design idea and realization method of AC constant current source, which is composed of direct digital synthesizer and digital potentiometer.The design has advantages of simple structure, strong practicability, high stability and high precision, and equipped with a standard expansion interface, practical application on the instruments, testing equipment which is need for high precision constant current source.then the system control quantity is calculated by PID algorithm ， and by adjusting the digital