Police siren sound effect circuit

Police Siren Sound Effect Circuit

Electronic Siren Circuit Diagram  siren circuit using 555 timer We are going to make a Police Siren Circuit using two 555 timer IC. The circuit will produce an up-down wailing sound from the speaker. In this circuit there are two 555 timer ic is used. Both 555 ic is connected as astable multivibrator/oscillator.  In an […]

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