大屏幕彩色电视机的行场扫描电路在工作原理上与普通彩色电视机一样,但在电路组成形式上有所变化,特别是使用I~2C总线的电视机,其扫描电路与传统电视机的扫描电路比较有较大的变化,有关内容将在下期专题介绍,本文只对采用传统扫描技术的大屏幕彩色电视机中的相关电路作重点的讨论。行扫描电路及保护电路大屏幕彩色电视机的行扫描电路早期曾使用过两只行输出管,这两只行输出管相互串联,其中一只用来输出行锯齿波电流,另一只用来输出中压和高压,这样做虽然减少了每一只 Large-screen color TV line scan circuit works in the same way as ordinary color TV, but the circuit components vary, especially the use of I ~ 2C bus TV, the scanning circuit and the traditional television Scan circuit comparison has a greater change, the content will be introduced in the next issue, this article only on the large-screen color TV with traditional scanning technology related to the circuit for the focus of the discussion. Row scan circuit and the protection circuit Large-screen color TV line scan circuit has used two early output tube, the two output lines in series with each other, one of which is used to output line sawtooth current, the other only Output medium voltage and high voltage, while reducing each one only