电容积分弱电流测量I/F变换电路  

Capacitance Integration Weak Current Measurement I/F Conversion Circuit

作　　者：李钢 杨仲秋 杨斌 周冬亮 李岩 闫海霞 LI Gang;YANG Zhong-qiu;YANG Bin;ZHOU Dong-liang;LI Yan;YAN Hai-xia(Heilongjiang Academy of Sciences,Haerbin Heilongjiang 150086,China)

机构地区：[1]黑龙江省原子能研究院,黑龙江哈尔滨150086

出　　处：《核电子学与探测技术》2022年第2期317-321,共5页Nuclear Electronics & Detection Technology

摘　　要：采用电容积分的方法设计了一种测量弱电流的电路.该电路将被测量的微弱电流转变成可被处理机接受和处理的脉冲信号.试验测试结果表明:电容积分法与电阻反馈法相比,电容积分法克服了高值电阻带来的限制,提高了抗干扰性能和灵敏度.A circuit for measuring weak current is designed by the method of capacitance integration.This circuit converts the measured weak current into a pulse signal that can be accepted and processed by the processor.The experimental test results show that compared with resistance feedback method,capacitance integration method overcomes the limitation brought by high-value resistance,improved anti-interference performance and sensitivity.

关 键 词：弱电流 电容积分器 I/F变换 复原电流源 灵敏度 

分 类 号：TL822[核科学技术—核技术及应用]