一、前言 由于显象管运用电压较高,屏幕较大,要求外廓尺寸尽量的小,偏转误差尽量的小,因此电子束的偏转几乎都使用磁偏转系统。偏转系统对于显象管而言,是一个电子光学部件,相当于电子。对于扫描发生器而言,它们又是一个电性负载由于偏转线是管后加在显象管上的,即是“管处零件”。因此对于电真空器件制造者而言,一直认为这是一个“无线电零件”,不愿化更多的精力去研究它。 然而随着显象板广角偏转技术的发展,人们逐渐认识到偏转系统对于获得光栅的几何正确性和保证整个象场上的清晰度具有重要的意义。可以认为,利用电子枪在荧光屏中心得到一个锐细的光点只是为在整个荧光屏上获得清晰图象提供了一个 I. Introduction As the use of high voltage kinescope, the screen is larger, requiring the outer dimensions as small as possible, the deflection error as small as possible, so the electron beam deflection almost all use the magnetic deflection system. The deflection yoke is an electro-optical component, equivalent to an electron, for a kinescope. For the scan generator, they are an electrical load, because the deflection line is added to the tube after the tube, which is “tube parts.” So for the vacuum device manufacturer, has always considered it a “radio component”, do not want to devote more energy to study it. However, with the development of the wide-angle deflection technology of the imaging plate, people gradually come to realize that the deflection system is of great significance for obtaining the geometrical correctness of the grating and ensuring the definition of the entire image field. It is believed that the use of an electron gun to obtain a sharp spot at the center of the phosphor screen provides only a sharp image across the screen