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Web an audio amplifier is designed to have a fairly low level ac input. The little speaker shown can be replaced with a. The sound produced imitates the rise and fall of an american police siren.
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Simply you can generate a siren sound by just using a transistor, speaker, or buzzer. 295hfsa1 amplifier pdf manual download. Web electronic siren circuit diagram siren circuit using 555 timer we are going to make a police siren circuit using two 555 timer ic.
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Here i have used rom ic lm 3561 & some electronic comonenets. This circuit can generate police. Oscillator circuit two npn pnp transistors, rc circuit constant and alarm sounding diagrams using speakers.
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The output of ic2 is fed to the. The siren circuit has a fairly high level dc output. Web it is a tutorial video for making 3 defferent tone siren sound genarator circuit.
Web Siren Circuit Diagram Using Two 2 Transistors.
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