Inductive wireless earphone circuit diagram

Inductive wireless earphones are widely used for wireless reception of audio signals in audio-visual education, home TVs and stereos. When used, they can not only eliminate the inconvenience caused by earphone wiring, but also avoid interference with other people's rest and study. This circuit is mainly assembled from the four NAND gate integrated circuit CD 4011 and a small number of peripheral components. The circuit is simple, the sound quality is excellent, no debugging is required, and it can be installed once.