微小信号放大电路设计  

Design of amplifying circuit for tiny signal

作　　者：孟丽霞[1] 于林丽[1] 濮钰麒[1] 王斌[1] 林燕凌[1] 居滋培[1] 

机构地区：[1]上海理工大学,上海200031

出　　处：《仪器仪表学报》2006年第z1期1012-1013,共2页Chinese Journal of Scientific Instrument

摘　　要：热探测传感器当信号较小时,其输出电信号只有几十微伏,需要放大几万倍,才能满足A/D转换的需要,本文介绍的微小信号放大电路不仅满足了电压放大的要求,而且设计了相关的电路,避免了信号失真,以及高频、低频和50Hz市电的干扰。该电路可广泛适用于仪表的信号处理中。To a heat detector,when the signal is tiny,the output electrical signal will be only ten times of v,which must be amplified ten thousand times to meet the need of A/D transformation.The amplifying circuit for tiny signal presented here can not only amplify the voltage,but can also avoid signal distortion caused by disturbance and the disturbances of high frequency,low frequency,and 50 Hz public frequency.It is widely used in signal processing of instruments.

关 键 词：电路 信号 滤波 

分 类 号：TH7-55[机械工程—仪器科学与技术]