摘要
本文从反馈电路的表达式出发,通过实际反馈电路分析,揭示了在输入回路中反馈信号与输入信号因同相、反向而存在正、负反馈的规律,并归纳出四种基本反馈电路中正负反馈极性的判断方法.
Starting from the mathematical expressions of feedback circuits and by means of analysing some feedback circuits,this paper tells the rules by whichpositive or negative feedback occurs whenfeedback signal and input signal in input loop are in same or opposite phase,summarizing methods to judge positive and negative signs of four basic feedback circuits.
出处
《青海师范大学学报（自然科学版）》
2010年第3期62-64,共3页
Journal of Qinghai Normal University(Natural Science Edition)
关键词
反馈类型
反馈极性
判断规则
feedback
feedback signsphase
judgment rules
