现代电子技术2011，Vol.34Issue(20)：156-158,3.
电磁超声换能器的前置放大电路设计
Design of Pre-amplification Circuit in Electromagnetic Ultrasonic Transducer
摘要
Abstract
Because the signal received by electromagnetic acoustic transducer (EMAT) is very weak, two weak signal amplifying circuits which respectively adopted NJM4580 and AD620 were designed. The virtual simulation for the two pre-ampli-fication circuits were conducted by Bode plotter and oscilloscope in MultisimlO produced by NI and the simulated results of the two circuits were compared. The results show that the circuit with AD620 is better than the one with NJM4580. The structure of the former one is more simple and the amplification capability is more superior.关键词
前置放大器/NJM4580/AD620/Multisim 10Key words
pre-amplification circuit) NJM4580/ AD620j Multisim 10分类
信息技术与安全科学引用本文复制引用
韩娜,李松松,李响..电磁超声换能器的前置放大电路设计[J].现代电子技术,2011,34(20):156-158,3.基金项目
国家自然科学基金资助项目(61072035) （61072035）
辽宁省博士启动基金资助项目(20081075) （20081075）
教育部留学归国基金项目 （）
大连市人才基金项目(2009J21DW006) （2009J21DW006）
