摘要
着重讨论高精密放大器的系统构成及主要性能指标。它主要用于对称重传感器输出的微弱直流信号进行放大,并在一定范围可以调节放大倍数使该信号能够匹配模/数(A/D)转换器的标准信号范围。另外,当称重传感器空载或者加载容器时它都可以实现输出归零,同时当系统连续工作积累的漂移过大时它也可以使输出归零。
Constitution and main performance indexes of a high precision amplifier are discussed emphatieally. It can be mainly used to amplify the weak direct current signal of a weighing sensor, and it＇s amplifying gain may be adjusted in a certain scope to match the standard input scope of an analog -digital（A/D）converter. Moreover, it＇s output may be zeroed when the weighing sensor is no -load, a vessel is put on it, or the accumulated drifting of the system is too large.
出处
《陕西理工学院学报（自然科学版）》
2008年第1期37-39,共3页
Journal of Shananxi University of Technology:Natural Science Edition
基金
陕西理工学院科研基金资助项目(SLG0446)
关键词
高精密放大器
低漂移
归零
滤波
high precision amplifier
low drifting
zeroing
filtering
