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在图1所示的基本的反相放大器电路中,控制上截止频率的传统方法是增加一只与R_2并联的电容器C。电容器C的电容量值可以控制截止频率。
In the basic inverting amplifier circuit shown in Figure 1, the conventional method of controlling the upper cut-off frequency is to add a capacitor C in parallel with R_2. The capacitance of capacitor C can control the cut-off frequency.