TWO_TONE_SIREN

Published:2009/7/10 1:39:00 Author:May | From:SeekIC

This siren provides a constant audio output, but alternates between two separate tones. The LM13080 is set to oscillate at one basic frequency; this frequency is changed by adding a 200-KΩ charging resistor in parallel with the feedback resistor, R2.



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