Screaming Siren Circuit

Screaming Siren Circuit

Siren is a device that produces loud noise. They are the means communication. Sirens can be seen in emergency vehicles such as police cars, ambulances and fire engines. Generally, sirens are used as indication or warning. There are different circuits to produce different sirens. Here in this article a screaming siren lights circuit is presented. Screaming siren lights are those which produces siren depending on the light intensity falling on the circuit. We can also call it as Light Activated Alarm circuit.

Screaming Siren Lights Circuit Principle:

The main principle of this circuit is to produce sound depending on the light intensity falling on the circuit. As the light intensity falling on the circuit increases, it produces pulses with more duration and thus producing more sound. The main part of the circuit is 555 timer IC. This produces oscillations depending on the light intensity on the Light Dependent Resistor.

Screaming Siren Lights Circuit Diagram:

Circuit Components:

• 555 timer IC
• Light Dependent Resistor
• Speaker
• Capacitors C1,C2
• Resistor R1
• Breadboard
• Connecting wires.
• DC battery.