视放末级电路的主要作用是:将三基色信号放大到显像管正常工作所需要的幅度,许多彩电的视放末级还兼有基色解码功能,即将亮度信号和三个色差信号变换成三基色信号。从结构上看,视放末级将三个结构相似的基色矩阵及放大电路合在一起,三路色差 As the final stage of the circuit as the main role is to: the three primary color signal amplification to the normal work of the CRT required amplitude, many color TV’s final stage also has a color-decoding function, the brightness of the signal and the three color signals into three primary colors signal. From the structural point of view, depending on the final level will be three similar structure of the primary color matrix and amplifier together, the three color