AUDIO_LIGHT

Published:2009/6/18 22:30:00 Author:May | From:SeekIC

This circuit will produce an output when the sound exceeds a preset level. The LM3915 is a log-output bar graph driver. Use the transistor driver shown for higher current loads. To drive heavy-current loads with an LM3915 output, you must add a transistor, as shown in B.



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