电子科技2012，Vol.25Issue(3)：75-77,81,4.
一种双相位锁相放大电路设计
A Design Method for the DUAL Phase Lock-in Amplifier
苏鑫 1罗文广 2马超 1吴再群3
作者信息
- 1. 桂林电子科技大学电子工程与自动化学院,广西桂林541004
- 2. 广西工学院电子信息与控制工程系,广西柳州545006
- 3. 百色学院物理与电信工程系,广西百色533000
- 折叠
摘要
Abstract
In order to better Abstract the weak signal submerged by noise,this paper analyzes the theory of the phase lock-in amplifier and designs a dual phase lock-in amplifier using CD4046 and AD630.Experimental results show that the amplifier can measure alternating-current less than 1 mA and it is a high-precision and practical phase lock-in amplifier with a sensitivity of 20 mV/mA and a precision of 0.05%.关键词
锁相放大电路/CD4046/AD630Key words
phase lock-in amplifier/CD4046/AD630分类
信息技术与安全科学引用本文复制引用
苏鑫,罗文广,马超,吴再群..一种双相位锁相放大电路设计[J].电子科技,2012,25(3):75-77,81,4.
