HJD-79型恒电流自动滴定仪全部采用国产集成电路组装而成,线路结构简单,小型轻便,造价低廉,能自动控制滴定终点并及时报警。它主要包括恒电流源电路、补偿式测量电极电位装置、比较控制电路和自动报警线路及双组稳压电源等。本仪器的恒电流源分为10档——50、100、200、500uA和1、2、5、10、20、50mA可供选择,精度优于±0.1％。电极电位控制范围 HJD-79 constant current automatic titrator all assembled by the domestic integrated circuit, the line structure is simple, small and lightweight, low cost, automatic titration endpoint and timely alarm. It mainly includes constant current source circuit, compensation measuring electrode potential device, comparison control circuit, automatic alarm circuit and double-regulated power supply. The instrument constant current source is divided into 10 files - 50,100,200,500 uA and 1,2,5,10,20,50 mA to choose from, accuracy better than ± 0.1%. Electrode potential control range