弱电流测量中的电流-频率变换电路  

I-F Converter in Weak Current Measurement

作　　者：董成富[1] 苏弘[1] 邢建萍[1] 李小刚[1] 马晓莉[1] 

机构地区：[1]中国科学院近代物理研究所,甘肃兰州730000

出　　处：《电子元器件应用》2004年第9期20-21,共2页Electronic Component & Device Applications

摘　　要：介绍了一种弱电流测量中的电流-频率(I-F)变换电路,它将输入的电流信号直接变换为脉冲频率输出,然后送入计数器计数和计算机处理。并且对其电路原理作了详细的阐述。经过在现场检验和使用,该电路具有工作稳定可靠,灵敏度高,抗干扰能力强等特点。The I-F converter (current-frequency converter) in the weak current measurement is introduced.The input current signal is directly converted into pulse frequency,then counted and processed by a computer.The operating principle of circuit is described.It is proved that the circuit is reliable,sensitive and antisturbance.

关 键 词：弱电流 I-F变换电路 辐射 

分 类 号：TM933.12[电气工程—电力电子与电力传动]