用反馈网络法判断放大器的反馈性质  

Judge the Nature of Feedback of Amplifier by the Feedback Network

作　　者：蔡建国[1] 瞿志海[1] 

机构地区：[1]武汉职业技术学院,湖北武汉430074

出　　处：《武汉职业技术学院学报》2004年第2期76-78,共3页Journal of Wuhan Polytechnic

摘　　要：负反馈放大器以优良的性能得到了广泛应用,然而学生往往觉得判断反馈的正负性质比较困难,尤其是复杂电路。本文提出了放大器反馈性质的另一种判断方法———反馈网络法。该法直观、逻辑清晰,结合瞬时极性判断法,使反馈性质的判断方法多样化,非常灵活方便,使反馈性质的判断不觉得困难。The negative feedback amplifier is widely used because of its perfect quality. However, the students often find it difficult to judge the nature of the feedback, especially in a complicated circuit. This paper presents a method to judge the nature of the feedback——feedback network method. This method, combined with the transient polarity method, is intuitional and has distinct logic, which diversifies the method of the judgement for feedback. It is flexible and convenient, making it easier to judge the nature of feedback.

关 键 词：反馈网络法 放大器 反馈性质 放大电路 

分 类 号：TN722[电子电信—电路与系统]