A tutorial on how to make a wailing siren circuit using 555 timer IC on a breadboard. Explanation of how this circuit works is also included in the video.
This circuit can be triggered by pressing a push button switch and it produces a tone with increasing intensity for as long as push button is pressed. After the push button is released, the intensity of siren sound gradually reduces to zero.

Link to the project page and circuit diagram: [ Ссылка ]

Components Required:
* 555 timer IC
* 8 Ohm Speaker
* Transistors: 1 BC547, 1 BC557
* Momentary Push Button Switch
* Capacitors: 10nF, 100uF
* Resistors: 39R, 22K, 33K, 100K, 2 * 220K
* Breadboard
* Few Breadboard Connectors
* (5-9)V of Power Supply

This tutorial is a part of 18 video series on Electronic Projects created using IC 555: [ Ссылка ]


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