【摘要】 运用结点电压法,结合运算放大器u-≈u+的概念,分析了几种典型的运放电路,其中包括用于信号运算方面的加法运算电路和积分运算电路,用于信号处理方面的高通滤波电路和低通滤波电路.用结点电压法分析运放电路,可将由运算放大器构成的电子电路图转化为电工等效图,拓宽了结点电压法的应用领域.更多还原

【Abstract】 Node voltage method is of very great significance in the theoretical lecturing of electrical engineering.By using the node voltage method,the analysis of several kinds of actual circuits composed of the operational amplifier is introduced in this paper.These actual circuits include the adding circuit,the integrated circuit,the high-pass filter and the low-pass filter.By using the method introduced in the paper,the circuit diagram composed of operational amplifier can be changed into the equivalent map of electrical engineering,and then the operational amplifier circuit can be easily analyzed by using this equivalent map.It is shown that the method is of great reference value in theoretical lecturing.更多还原