多环负反馈放大电路模式与分析

Models of multi-loop negative feedback circuit and analysis

实际的负反馈放大电路,并非都是由基本放大电路和反馈网络构成一个闭环系,还有由多个基本放大电路和多个反馈网络构成的多环系统,给出了几种多环负反馈放大电路的一般方框图和“闭环”增益一般表达式,并浅析.

The actual negative feedback amplifying circuit doesn' t form a closed - loop only from the basic amplifying circuit and the feedback network, but forms the mult - loop system multi-loop negative feedback circuit from several basic amplifying circuits and several feedback networks. Here this article describes and analyses the general charts of several multi-loop negative feedback amplifying circuits and the general formula of the 'closed -loop' amplifying (transfer function).