电压幅值可达毫伏数量级的小信号峰值检测电路的设计

DESIGN ABOUT CIRCUIT OF WEAK-SIGNAL PEAK VALUE DETECTION WHOSE AMPLITUDE OF INPUT VOLTAGE AMOUNT TO MICRO-VOLT ORDER OF MAGNITUDE

讨论了一般峰值检测电路的缺陷,提供了检测信号电压幅值可达毫伏数量级的小信号峰值检测的电路,并对其应用给出了例子。在实际工作中往往只需对波形的正向峰值进行检测,故只对正峰值检测电路进行讨论。由于小信号检测存在噪声干扰的问题,最后还对噪声处理进行了讨论。

The thesis talks about the limitation of general peak value detection circuit and provides the circuit that it is a weak-signal detection circuit whose amplitude of input voltage amount to microvolt order of magnitude, furthermore, renders example of appliance. Only is the positive peak value of waveform often required detecting in fact work, so the circuit of positive peak value detection is only presented in the article. Due to noise problem in the weak signal detection, the article talks about how to deal with noise in the end.