A Study on the Design of DC Amplifier

DC증폭기의 설계방법에 관한 연구

In a chopper amplifier the input signal of the AC amplifier is a train of square-waves. In the rase of square-wave the operatiom of AC amplifier is much different from that of ordinary sinusoidal wave. In this paper for the purpose of contributing to the design of chopper amplifier destortions of waveforms in the amplifier were investigated. When the time constant of each stage is equal the waveform in each stave apppears as square wave whose top is exponentially decaying. And when each stave has different time constant the waveform in n-th stage is composed of n-square waves whose tops are exponentially decaying.

쵸퍼형DC증폭기의 AC증폭기의 인력신호는 일련의 단형연이다. 따라서 이 때의 AC증폭기의 동작은 정장파신호에 대한 그것과 큰 차이가 있다. 본 논문은 단형파에 대한 AC증폭기의 각단에서의 파형의 찌그러짐에 대한 해석을 하여 쵸퍼용AC증폭기의 설계상의 문제점을 고찰한 것이다. 각증폭단의 시정수가 동일한 경우에는 각단의 신호파형은 모두 지수감쇠속형파로 되며, 시정수가 다를 경우에는 여러개의 지수감쇠구형파의 합성파로 된다. In a chopper amplifier the input signal of the AC amplifier is a train of square-waves. In the rase of square-wave the operatiom of AC amplifier is much different from that of ordinary sinusoidal wave. In this paper for the purpose of contributing to the design of chopper amplifier destortions of waveforms in the amplifier were investigated. When the time constant of each stage is equal the waveform in each stave apppears as square wave whose top is exponentially decaying. And when each stave has different time constant the waveform in n-th stage is composed of n-square waves whose tops are exponentially decaying.