一种雷管电参数测试仪的恒流电路设计

Design of the constant current source circuit of a detonator electric parameter tester

本文阐述了一种雷管电参数测试仪的恒流电路设计,电路采用msp430单片机,DAC数模转换模块、有源负载及负反馈电路设计实现了电流的恒定输出,提高了电流输出的稳定性。同时整机电路设计采用微电脑控制单元,实现了时间和电流的数字化设定,具有较高的测试精度。

Design of the constant current source circuit o f a detonator electric parameter tester is presented in this paper, the circuit is comprised of msp430 single chip microcomputer, DAC, active load and negative feedback circuit, which realizes the constant circuit and improves the stability of the circuit. Meanwhile, the circuit design adopts microcomputer control cell, carries out the digital setting of time and current and has high test precision.