Design of an amplifiera of high precision
Wang Chun · Journal of Shaanxi University of Technology · 2008
Constitution and main performance indexes of a high precision amplifier are discussed emphatically.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.