SOUND_SENSOR

Published:2009/7/9 5:37:00 Author:May | From:SeekIC

By using a microphone，high－gain amplifier(Fig.37－10(b)),and detector－relay driver(Fig.37-10(a)asound-detecting alarm system can be constructed.If you want a latching setup，make the dotted connection to the relay shown h Fig.37-10(a)



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