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The wireless reception headphone circuit

2016-11-03 10:19  
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The wireless reception headphone circuit
TDA2822-B-B wireless reception headphone is the tool that students receive the teaching audio. The writer has drawn a physical map, which is shown in the figure as reference. See as the figure, TDA2822M is the dual-channel audio amplifier integrated circuit (in the figure there is one channel). The magnet coil S receives the audio signal from the audio classroom, the signal is sent to the 6-pin of the chip by the central head of potentiometer W, and then it is amplified and output by 3-pin, finally, it passes the coupling capacitor C2 and is added on the headphones in parallel connection, so the headphone is making sounds.