摘要
研究采用相敏检波技术测试直流微弱信号的一种电路,并给出实验结果,其检测灵敏度可达0·spV,测试精度优于土O.5·
This paper introduces a kind of utility circuit to measure sma1l direct voltage. It also gives the experiment results. The sensitivity is 0. 5 pV, and the accuracy is better than ±0. 5 %.
出处
《广西师范大学学报(自然科学版)》
CAS
1997年第4期53-57,共5页
Journal of Guangxi Normal University:Natural Science Edition