【摘要】 本实验基于压力传感器的高阻抗小信号输出,分别通过单个运算放大器差分电路、三个运算放大器构成的仪用放大电路以及集成仪用放大电路来放大,应用零点与增益调整电路来实现重量与电压的一一对称,通过数字万用表的电压值来表示重量。该实验具有趣味性、实用性和不确定性有利于学生发现问题、分析问题、解决问题。更多还原

【Abstract】 In this experiment, high impedance small signal based on pressure sensor output, difference respectively through a single operational amplifier circuit, consisting of three operational amplifier instrument using amplifying circuit and integrated instrument amplifier circuit to amplify, application of zero and gain control circuit to achieve weight and the voltage of the symmetry, said the weight through the voltage value of the digital multimeter. The experiment is interesting, practical and uncertain, which is helpful for students to find, analyze and solve problems.更多还原