半导体知识，放大电路分析基础、场效应管放大电路、负反馈放大电路、集成运算放大器、集成运算放大器的应用。波形发生与变换电路、低频功率放大电路、-semiconductor knowledge, amplifying circuit analysis based FET amplifier, negative-feedback amplifier, integrated amplifier, integrated operational amplifier applications. Occurre