Simple hypnosis working principle circuit

Published:2011/5/6 1:31:00 Author:Jessie | Keyword: hypnosis | From:SeekIC

In this circuit, the time base circuit 555 conposes a very low frequency oscillator, and it outputs short pulses, which makes the speaker send out sound similar with raindrops. The speaker uses2 inches, 8 ohms small moving coil type. Raindrops soundspeed can be adjust to suitable degree by 100K potentiometer. Ifwe add a timing switch at power, so that can cut power in time when user asleep.



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