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从高频头输出的图像中频信号和第一伴音中频信号,加到中频放大电路中进行放大。然后,图像中频信号送到视频检波电路中检波得到彩色全电视信号FBYS,第一伴音中频信号经变频得到第二伴音中频信号。这两个信号一起加到顶视放进行放大,之后各部分信号分开,加到各自的电路中。图1是东芝x—53P机心实用的图像中放和视频检波电路,它主要由集成电路TA7607AP组成。TA7607AP采用16脚双列直插封装,各引脚功能是:①、(16)脚为图像中频输入;②、(15)脚
The intermediate frequency signal and the first audio intermediate frequency signal output from the tuner are added to the intermediate frequency amplifying circuit for amplification. Then, the image intermediate frequency signal sent to the video detection circuit to detect the color full-color television signal FBYS, the first audio intermediate frequency signal is converted to a second intermediate frequency audio signal. The two signals are added to the top of the line together to zoom in, after which each part of the signal separately, added to their respective circuits. Figure 1 is Toshiba x-53P movement of the heart of the image and video detection circuit, which is mainly composed of integrated circuits TA7607AP. TA7607AP dual 16-pin DIP package, the pin functions are: ①, (16) feet for the image IF input; ②, (15) feet