摘要
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。实验证明这种直流放大器与ＹＭ３８９１型直流放大器效果相近，是一种价廉、实用的直流放大器。
In this paper, a method used to amplify faint direct current signal is put forward, and the circuits of direct current amplifier to realize the method are devised. Experimental results indicate that, the DC amplifier is similar to YM3891DC amplifier functionally,but cheaper and more practical than the latter.
关键词
微波
集成电路
直流放大器
microwave
direct current
integrated circuit
amplifier
