密勒扫描电路和恒流扫描电路是大家比较了解的两种锯齿电压发生器电路,它们早已被广泛地用于示波器等显示仪器中。由于这两种电路存在着各自的特点,作者拟在本文中根据自己多年来的工作体会对这两种电路作一些分析和讨论,以利于读者在实际应用中选择合适的电路方案和电路参数。由这两种电路所产生的电压锯齿波,通常经差分放大器放大后送到阴极射线示波管的水平偏转板,使示波管的显示光点能从左到右匀速运动,我们称之为 Miller scanning circuit and constant current scanning circuit is a better understanding of the two sawtooth voltage generator circuit, they have long been widely used in oscilloscopes and other display instruments. Because of these two circuits have their own characteristics, the author intends in this article based on their work experience over the years for some analysis and discussion of these two circuits in order to facilitate readers in the practical application of the appropriate choice of circuit programs and circuit parameters. The voltage sawtooth waves generated by these two circuits are usually amplified by a differential amplifier and then sent to the horizontal deflection plate of the cathode ray tube, so that the display light spot of the tube can move uniformly from left to right, which we call