一种新型库仑滴定恒流源  

A New Constant Current Source for Coulometric Titration

作　　者：张明晓[1] 李学刚[1] 张光先[1] 艾平[1] 

机构地区：[1]西南农业大学基础科技学院,重庆630716

出　　处：《分析化学》1996年第8期981-984,共4页Chinese Journal of Analytical Chemistry

摘　　要：本文报道一种新型库仑滴定恒流源，采用集成精密稳压电源LM317设计而成，输出电流范围为50，00～500．0mA，变化率≤±0．1％。应用于酸碱滴定和氧化还原滴定等常量分析，结果表明，相对标准偏差≤0．1％。并且该装置电路简单、价格低廉。In this paper, a design of new constant current source for coulometric titrator has been reported. The design of this device adopted a precision constant voltage power supply LM 317, which guaranteed the device for an output current ranging from 50. 00 to 500. 0 mA and a variation of output current ≤±0. 1 %. It has been applied to the macroanalysis such as acid-base titration and redox titration with relative stantard deviation of analysis≤0. 1 %. In adition, the electric circuit of this equipment is simple and its price is cheap.

关 键 词：恒流源 库仑滴定仪 库仑滴定 

分 类 号：TH832.22[机械工程—仪器科学与技术]