同相运放电路放大倍数的线性分析

Linear Analysis of Amplification Factor of the Same-phase Op-amp Circuits

针对同相比例运放实验装置,以测定电路的放大倍数为研究对象。用非等精度测量方案获取原始数据,引入SPSS线性功能处理样本数据,得到系统输出电压与输入电压的关系曲线,验证电路输出电压与输入电压具有线性关系,由此标定出同相比例运放的放大倍数。并用数字存储示波器直接存储同相运放的同相功能。用置信概率为95%的不确定度评价实验数据及结果,最终得到更加直观、合理的实验结果。

According to the same-phase proportional operational amplifier experiment device,measuring the amplification factor of the circuit is designed to the research object.The measurement data are obtained by the way of non-equal precision measurement.Using the linear estimation function of SPSS is to analyze the experimental data.Its aim is to get the output and input voltage calibration curve and to verify the linear relationship between output and input voltage.The result is that the coincident proportional amplification multiples are obtained.At the same time,using the function of signal the direction of observation and record function with confidence probability of 95%is to analyze and evaluate the measurement data and experimental results.According to above procedures,the research can get more reliable and reasonable results.