建议用两路直流放大器的零补偿线作为参考线。
Using zero compensating line of two direct-current amplifiers as a reference line was suggested.
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。
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.
实验证明这种直流放大器与YM 3891型直流放大器效果相近，是一种价廉、实用的直流放大器。
Experimental results indicate that, the DC amplifier is similar to YM3891DC amplifier functionally, but cheaper and more practical than the latter.
实验与分析表明，高压直流放大器采用功率场效应管和电压闭环控制后，可拓展放大器通频带，提高放大器输出能力和长时间稳定性。
The experimental and analytical results demonstrate that wide bandwidth, high voltage output and long-time stability can be achieved with power MOSFETs and a closed-loop scheme.
实验与分析表明，高压直流放大器采用功率场效应管和电压闭环控制后，可拓展放大器通频带，提高放大器输出能力和长时间稳定性。
The experimental and analytical results demonstrate that wide bandwidth, high voltage output and long-time stability can be achieved with power MOSFETs and a closed-loop scheme.
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