试论电子放大电路中的电压-电流反馈

Trial exposition on voltage-current feedback of electronic amplifier

文章提出了电压-电流反馈的概念,指出电压-电流反馈对放大器的输出电阻无改善作用,也不能产生恒压输出或恒流输出。分析了电压-电流反馈放大电路。为反馈放大电路的初学者更好地理解电压反馈和电流反馈提供了一种新的方法。

A concept of voltage-current feedback is put forward. It is pointed out that this feedback has no function of improving the output resistance of an amplifier, and could not let the amplifier produce constant voltage or current output. This paper analyzes the electronic amplifier of voltage-current feedback and gives a new method for the beginners of learning feedback amplifier to better understand the theorem of voltage feedback and current feedback.