Use 555 Build Spaceship Alarm Circuit Diagram

This is ic based security circuit By using two 555 timers this circuit produces a low frequency tone that rises to a high frequency tone in a little over 1 second. Then the sound stops for about 0.3 seconds, thereafter the cycle repeats. To produce the alarm sound of the Star Trek spaceship.

Use 555 Build Spaceship Alarm Circuit Diagram


Use 555 Build Spaceship Alarm Circuit Diagram

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