Published:2009/6/23 2:17:00 Author:May | From:SeekIC
This circuit uses a TBA820 audio IC to amplify underwater sounds. The microphone must be waterproofed. This project was originally used in a home aquarium to monitor fish sounds.
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http://www.seekic.com/circuit_diagram/Audio_Circuit/Microphone/UNDERWATER_MICROPHONE.html
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