【摘要】 差分放大器在电子线路中有着广泛的应用,在模拟电子技术的教学中是重要内容之一。提出了差分放大器除了在直耦放大器中克服零点漂移外,其设置的目地是可以对2个输入端的差进行放大,同时对在非对称下情况如何减少失调电压及共模电压的范围做了详细的介绍,这些对于教学和电路设计及电路的合理应用却是非常重要的。更多还原

【Abstract】 Differential amplifiers are widely used in electronic circuits.They are also one of the important subjects in simulate electronic technology.This paper describes that differential amplifiers overcome zero offset in direct coupling amplifier and amplify the difference voltage between the two input terminals in differential amplifiers.Meanwhile,it describes how to decrease the offset voltage under unsymmetrical conditions and the magnitude range of the common mode voltage.These will be helpful to circuit design and teaching.更多还原