【摘 要】
：
三、主副图像、伴音中频电路(PM、PS 板)本电路主要由双面声表面滤波器、主副中放集成块和外围元件组成。由于主副中放的图像及伴音解调过程相同,下面仅以主路为例进行分析
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三、主副图像、伴音中频电路(PM、PS 板)本电路主要由双面声表面滤波器、主副中放集成块和外围元件组成。由于主副中放的图像及伴音解调过程相同,下面仅以主路为例进行分析。主副中放 PM、PS 板,均用 TA8800N 做图像及伴音中频处理。从主调谐器输出的主中频信号经耦合电容 C_(102)进入图像预中放 V_(101)的 b 极,放大后输出的中频信号加到声表面 Z_(101)的图像中频输入④端,经 Z_(101)
Third, the main image, audio intermediate frequency circuit (PM, PS board) The circuit is mainly composed of double-sided surface acoustic filter, the main assembly into the integrated block and peripheral components. As the main and deputy placed in the same image and audio demodulation process, the following only the main road as an example for analysis. PM placed in the main PM, PS board, are used to do the image and audio IF TA8800N processing. The main IF signal output from the main tuner enters into the b pole of V_ (101) in the image through the coupling capacitor C_ (102), and the amplified intermediate frequency signal is added to the intermediate frequency input end of the audio surface Z_ (101) The Z_ (101)
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