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一 引言 本电路用于彩色电视接收机的色度处理部分,用它完成自动色度控制(ACC);色度放大,色饱和度控制;消色控制;色同步信号选通与消隐等作用。与X76及一些外围元件连接后完成负载波放大,鉴相,PAL识别,同步调解等作用。由于电路内有ACC控制系统,所以,既使接收来的信号幅度有变化,输出也能保持不变或变化很小,保证了电视机的接收效果。本电路采用双列直插式封装,使用方便。
I. INTRODUCTION This circuit is used in the chrominance processing part of a color television receiver and uses it to perform automatic chrominance control (ACC), chrominance amplification, color saturation control, achromatic control, gating and blanking of color burst signals . With X76 and some external components connected to complete the load wave amplification, phase identification, PAL recognition, simultaneous mediation and so on. Due to the ACC control system in the circuit, even if the amplitude of the received signal varies, the output can remain unchanged or change very little to ensure the receiving effect of the television. The circuit uses dual in-line package, easy to use.