直接耦合放大器直接耦合以后,前后级放大电路的静态工作点到底是怎样变化的,本文引入等效直流负载电阻的概念可以用图介法进行分析。一、估算各级放大电路单独设置静态工作点的情况。如图1中两个放大电路,其电路参数如图中所示,对于硅管可取 After the direct coupling amplifier is directly coupled, the static operating point of the amplifying circuit at the front and the rear stage changes in the end. The concept of equivalent DC load resistance introduced in this paper can be analyzed by graph-mediated method. First, estimate the magnification circuit at all levels to set the static working point alone. As shown in Figure 1, two amplifier circuits, the circuit parameters shown in the figure, desirable for the silicon tube