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众所周知,简单地由电容器,电阻和开关(一般为闸流管或电子开关)所组成的扫描电路(图1)所产生的锯齿形电压的线性程度在幅度比较大时即不能令人满意。利用
It is well-known that the linearity of the zigzag voltage generated by a scanning circuit (FIG. 1) consisting of capacitors, resistors and switches (typically thyristors or electronic switches) is unsatisfactory when the amplitude is relatively large. use