彩色电视机的保护电路分析

Analysis on Protective Circuits in Color TV Sets

保护电路是彩色电视机里比较复杂的电路,掌握一些保护电路的原理对电视机的维修有很大的帮助,详细分析了彩色电视机中的过压保护电路、过流保护电路、欠压保护电路、启动保护电路和尖峰脉冲吸收电路的结构、特点和工作原理。

Protective circuits in the color TV sets are very complex. So it is helpful to master some protective circuit principles when doing the maintenance. This paper analyzed in detail the structures, characteristics and working principles of peak pulse absorption circuits, over-voltage protective circuit, over-current protective circuit, under-voltage protective circuit and the start protective circuit in color TV sets.