Tag Archives: Alarm Siren

Dual Tone Single IC Siren

Posted on December 24, 2009 by Adam
Dual Tone Single IC Siren

This circuit is a double tone Police sound and Single tone old ambulance sound. This circuit is usually installed on a on battery powered cars, motorcycles, and bicycles for fun kid not only that, this circuit also used in  models … Continue reading →

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Wailing Alarm Siren

Posted on May 18, 2009 by Adam
wirling-alarm-sirene

This alarm siren circuit give continuous frequency sweep, a warbling sound. The warbling period is about 6 seconds, 3 seconds for frequency sweeping up and 3 seconds for frequency sweeping down. You can change the warbling frequency of this alarm … Continue reading →

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