彩电场输出集成块LA7830常见故障分析

Analysis of Common Breakdown in Field Output Integrated Cube LA7830 of Colour TV

简述LA7830的工作原理 ,分析了其典型应用中内部OTL电路各阶段电流、电压波形形成过程及特点 .

This article briefly describes the working law of LA7830 and analyses the formation course and features of galvanic and voltage waves of each state of inner OTL Circuit during the typical use of LA7830. On this base ,it also discusses what effect the deterioration of each inside and outside component & part of integrated circuit has on TV operation as well as the causes of TV damages.