论文部分内容阅读
反馈是电子技术中的一个重要概念。它是指把电子系统的输出量(电压或电流)的一部分,经过一定的电路送回到它的输入端。如果送回的信号加强了原信号,就称为正反馈,反之,则称为负反馈。根据反馈电路与输入及输出电路的连接方式,负反馈可以归纳为以下四路类型:(1)串联电流负反馈;(2)串联电压负反馈;(3)并联电压负反馈;(4)并联电流负反馈。在放大电路中接入负反馈后可使放大电路放大倍数的稳定性、非线性失真和频率特性等多项性
Feedback is an important concept in electronic technology. It refers to the electronic system output (voltage or current) part of the circuit through a certain return to its input. If the signal sent back to strengthen the original signal, it is called positive feedback, otherwise, it is called negative feedback. According to the feedback circuit and input and output circuit connection, negative feedback can be summarized as the following four types: (1) series current negative feedback; (2) series voltage negative feedback; (3) parallel voltage negative feedback; (4) parallel Current negative feedback. Negative feedback in the amplifier circuit can amplify the magnification of amplification stability, nonlinear distortion and frequency characteristics of multiple