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二、垂直枕形失真校正电路的分析与检修 在小屏幕彩电中,垂直枕形失真(即上下枕形失真)校正电路一般不单独设置,而常用提高场偏转线圈上的锯齿波电流来增大偏转角,再配合调节场幅来校正。大屏幕彩电由于显像管尺寸大,其偏转角也大(在110°以上),光栅垂直枕形失真就越严重,难以用加大场偏转电流的方法来校正,因此必须设置专门的枕校电路来实现失真校正。现以松下TC-29V30R型彩电为例,介绍这部分电路的原理与检修思路。
Second, the vertical pincushion distortion correction circuit analysis and maintenance In the small screen color TV, the vertical pincushion distortion (ie, up and down pincushion distortion) correction circuit is generally not set alone, and commonly used to improve the field deflection coil on the sawtooth wave current to increase Deflection angle, and then adjust the field to adjust. Large-screen color TV tube size as a result of its large deflection angle (at 110 °), the more serious vertical pincushion distortion, it is difficult to increase the field deflection current method to correct, so you must set up a special pillow school circuit To achieve distortion correction. Panasonic is now taking the TC-29V30R-type TV as an example, introduce the principle of this part of the circuit and maintenance ideas.