摘要
利用反馈元件与电路输入、输出端的连接方式,来简化反馈类型的判别过程,并根据电压和电流的相互转换关系,采用“瞬时电流法”判别反馈电路的性质;利用“虚短”和“虚断”的概念来估算深度负反馈电路的电压增益.通过对所举反馈电路的分析,来证明该方法的可行性和优越性.
Using the connecting fashions between the feedback component, the input and output spot of circuit, the process of distinguishing the type of feedback circuit can be simplified. According to the mutual relationship between voltage and electric current, a new method named instantaneous electric current will be put forward to distinguish the quality of feedback circuit. Using the concept of virtual short circuit and virtual open drcuit, the voltage gain of depth negative feedback circuit can be estimated. To demonstrate the feasibility and superiority of this method, a feedback circuit will be analyzed.
出处
《高师理科学刊》
2005年第4期90-92,共3页
Journal of Science of Teachers＇College and University
关键词
反馈类型
反馈元件
反馈性质
瞬时电流
虚断
虚短
the type of feedback circuit
feedback component
the quality of feedback circuit
instantaneouselectric current
virtual open circuit
virtual short circuit
