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示波器的垂直通道放大器主要由输入缓冲级、前置放大级、延迟线和末级放大器等四部分组成。本文通过对20MHz到100MHz等多种国外示波器的分析,就垂直通道中较新颖的电路且具有共性的输入缓冲级作一介绍。输入缓冲级宽带垂直放大器的输入缓冲级由衰减器和缓冲器组成。它的作用是将频率宽广、幅度相差很大的被测信号衰减成适当幅度然后加到前置放大器进行放大。在高增益的垂直通道中,由于输入缓冲级信号电平最低,
Oscilloscope vertical channel amplifier mainly by the input buffer stage, pre-amplifier stage, delay line and the final amplifier and other four parts. This article through a variety of 20MHz to 100MHz and other foreign oscilloscopes on the vertical channel of the more novel circuit and has a common input buffer for an introduction. Input Buffer The wideband vertical amplifier input buffer consists of an attenuator and a buffer. Its role is to a wide frequency, the amplitude of the measured signal is greatly reduced to the appropriate amplitude and then added to the preamplifier to enlarge. In the high gain vertical channel, the input buffer level signal level is the lowest,