Multisim10在负反馈放大电路教学中的应用

Application of Multisim 10 in the Negative Feedback Circuit Teaching

反馈是模拟电路教学中的重点和难点,放大电路引入负反馈,能有效地改善电路性能。应用Multisim仿真软件对负反馈放大电路进行仿真,验证了负反馈对放大电路的放大倍数、输入电阻、输出电阻、非线性失真和通频带的影响。与传统的分析方法相比,仿真分析使电路分析变得生动形象、直观可信,提高了学生的学习兴趣和教师的教学质量。

Feedback circuit is focus and difficulties in analog circuit teaching, introducing negative feedback into amplifying circuit can effectively improve the circuit performance. The simulation analysis of the negative feedback amplifier circuit is proposed based on Multisim lO.h verifies the effects of negative feedback to the amplifier circuit, including magnification, input resistance, output resistance, the nonlinear distortion and the frequency band. Compared with traditional analysis methods ,the simulation analysis is vivid, intuitive and reliable, improve the learning interest of the students and the teaching quality of Teachers.