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阴极射绕管的电子束偏离屏幕中心而发生的散焦现象,可以利用电子线路进行矫正。模拟计算机型的函数发生器可以产生校正偏压,该校正偏压能动态地与偏转信号同地步加到阴极射线管的聚焦元件上。
Cathode injection tube electron beam deviation from the center of the screen defocus occurs, you can use the electronic circuit for correction. The analogue computer type function generator can generate a correction bias that can be dynamically applied to the focusing element of the cathode ray tube synchronously with the deflection signal.