彩色电视机场扫描电路的作用与黑白电视机一样,主要是给场偏转线圈提供线性良好、幅度足够的场频锯齿波电流,使显像管电子束产生垂直方向的偏转,与行扫描电路产生的水平方向偏转共同在荧光屏上形成一幅光栅。 电路工作原理 图1是东芝X—53P机心的行、场扫描电路的原理图,扫描的小信号处理是由TA7609P行场扫描集成电路来完成。 Color TV airport scan circuit and black and white TV, the same is mainly to the field deflection coil to provide a linear, good amplitude of the field frequency sawtooth wave current, the CRT electron beam generated vertical deflection, and line scan circuit level Directional deflection together form a grating on the phosphor screen. Circuit works Figure 1 is the Toshiba X-53P movement of the line, field scan circuit schematic, small signal processing is scanned by the TA7609P line field scan IC to complete.