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1.工作原理下面以海信TC—2919KB型彩电为例作以介绍TA8739P方框图参见图1。应用电路参见图2所示。 (1)从N501(TA8783N)(32)脚输出的场激励脉冲,经R373输入至N371(TA8739P)(13)脚,经N371集成电路处理后,变成场锯齿波从N371⑧脚输出,此锯齿波内含有垂直枕形校正分量,再由场输出电路放大后,送到场偏转电路(偏转线圈),完成垂直方向扫描和枕校任务。水平扫描电路枕校抛物波从N371②脚输出,再
1. Working principle The following to Hisense TC-2919KB type TV as an example to introduce TA8739P block diagram shown in Figure 1. Application circuit shown in Figure 2. (1) Field excitation pulse output from N501 (TA8783N) (32) pin is input to N371 (TA8739P) (13) pin via R373 and processed by N371 integrated circuit to become field sawtooth output from N371⑧ pin. Wave contains a vertical pincushion correction component, and then amplified by the field output circuit, sent to the field deflection circuit (deflection coil), to complete the vertical scanning and pillow school tasks. Horizontal scan circuit Pinyin parabolic wave output from the N371 ② feet, and then