Laptop sound card chip AD1981 functional block diagram
Source: InternetPublisher:sigma Keywords: Computer sound card laptop AD19 Updated: 2020/09/25
Shown is a video circuit composed of an IF processing circuit (MC1350) and a video detector MC1330AP. The IF carrier (45 MHz) modulated with
the video image signal is sent to the input of MC1350, and the IF is amplified within 1C. Then the IF carrier
is coupled to the input of MC1330AP through transformer T1, and the IF signal is detected in MC1330AP. , and finally outputs video image signals (including
audio signals). This circuit is characterized by fewer components and small size.
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