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在电视机检修的过程中,经常会接触到行逆程脉冲,而关于它的很多论述又讲得不太清楚,令人困惑不解,成为维修工作中的拦路虎、绊脚石。因此对其进行一番深入透彻地剖析,以达到“知其然知其所以然”的目的,为检修工作扫清障碍。 1.哪一个波形才是行逆程脉冲的波形? 我们知道.行逆程脉冲是在行扫描逆程期间由行偏转线圈与逆程电容产生LC振荡而形成的,观察时应从行管集电极波形,我们通常在图纸等资料上所见到的行管集电极电压波形如图1所示。
In the process of TV repair, often come into contact with the pulse of the line, and many of its discourse about it is not clear, puzzling, become a stumbling block in the maintenance work stumbling block. Therefore, a thoroughgoing and thorough analysis of it is carried out so as to achieve the purpose of “knowing what it is all about but knowing what it is” and to clear up the obstacles for overhauling work. 1. Which waveform is the waveform of the reverse pulse? We know that the line of the reverse pulse during the line scan is formed by the line deflection coil and the reverse capacitor LC oscillation formed, the observation should be from the tube collector Waveform, we usually see in the drawings and other data on the tube collector voltage waveform shown in Figure 1.