Patients with insomnia often have this experience. Some monotonous repetitive sounds, such as the sound of "tap, tap" raindrops under the eaves, can easily urge people to fall asleep. The electronic hypnotic device is designed and made according to this principle.
The picture shows a circuit diagram of a practical electronic hypnosis device. It can emit the sound of simulated "tap, tap" raindrops, and use insomniacs to fall asleep faster. When falling asleep,
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