Research and Discussion on Measuring Method of Weak Current Signal

Abstract

There are a large number of weak current signals in production practice and scientific research. For high-precision instruments, the accurate measurement of weak current signals is related to the normal use of the instrument. Because of its weak value and susceptibility to interference, the measurement of weak current has always been the focus of discussion and attention. This article introduces the current development status of weak current measurement and the principles and comparative analysis of the two common basic measurement methods current-to-voltage conversion method and current-to-frequency conversion method, and provides measures to improve measurement performance during the use of the two measurement methods.