In this paper, a method used to amplify faint directcurrent signal is put forward, and the circuits of directcurrentamplifier to realize the method are devised.
本文提出一种放大微弱直流信号的方法，同时设计了实现这一方法的直流放大器电路。
2
The design principle and specific process of the pulse width servo amplifier is introduced, which is used to drive directcurrent motor to work.
介绍一种脉冲调宽型伺服放大器的设计原理及具体过程。
3
It must be set up suitable quiescent point in order to works in linear region. This decides that the analysis of amplifier includes directcurrent analysis and alternating current analysis.