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在各种报刊、电台、电视台上常看到或听到“反馈”一词,那么“反馈”源于何处呢?“反馈”一词来源于电子技术中一个术语。什么是“反馈”呢?反馈可以说是一种手段,凡通过一定方式把放大电路的输出回路的某一个电量(电压或电流)的一部分或全部送回到回路中,这种反送的过程叫作“反馈”。“反馈”在电子技术中的作用有:(1)稳定静态工作点和放大倍数;(2)减少非线性失真,扩展频带;(3)改变输入
The word “feedback” is often seen or heard in various newspapers, radio and television stations. Where does “feedback” come from? The word “feedback” comes from a term in electronic technology. What is “feedback”? Feedback can be said to be a means by which a part or all of a certain amount (voltage or current) of the output circuit of the amplifying circuit is sent back to the circuit in a certain manner. Called “feedback.” The role of “feedback” in electronic technology is: (1) stable quiescent operating point and magnification; (2) reduction of nonlinear distortion and expansion of frequency band; (3) change of input