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负反馈放大电路有哪几种啊
更新时间: 2020-10-04 00:00:00  

在放大电路中引入负反馈,虽然会导致闭环增益的下降,但能使放大电路的许多性能得到改善。放大电路的增益可能由于元器件参数的变化、环境温度的变化、电源电压的变化、负载大小的变化等因素的影响而不稳定,引入适当的负反馈后,可提高闭环增益的稳定性。负反馈放大电路有四种,如下所示:

1、电压串联负反馈;

2、电压并联负反馈;

3、电流串联负反馈;

4、电流并联负反馈。

关键词: 反馈 放大 电路

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