Title :
Design of High Stable Numerically Controlled Constant-current Source
Author :
Chang, Tieyuan ; Zhu, Guifeng ; Chen, Wenjun
Author_Institution :
Coll. of Electron. & Inf. Eng., Hebei Univ., Baoding, China
Abstract :
A numerically controlled constant-current source is designed. A negative feedback of closed-loop is used in the source based on single chip microcomputer. The system has a small ripple current and reliable step-adjustable function. The setting and the output are precise. The output of the constant-current source is stable when the load is changed. The errors can reach the level of 0.1%.
Keywords :
closed loop systems; constant current sources; microcomputer applications; microprocessor chips; numerical control; closed-loop feedback; constant-current source numerical control; single chip microcomputer; step-adjustable function; Circuit stability; Cooling; Design engineering; Educational institutions; Keyboards; Resistance heating; Resistors; Sampling methods; Temperature; Voltage; Closed-loop; Constant-current source; High Stability; SCM;
Conference_Titel :
Future Networks, 2010. ICFN '10. Second International Conference on
Conference_Location :
Sanya, Hainan
Print_ISBN :
978-0-7695-3940-9
Electronic_ISBN :
978-1-4244-5667-3
DOI :
10.1109/ICFN.2010.53
