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  • Police Sirene Circuit Design Using IC NE555

Police Sirene Circuit Design Using IC NE555

  • Artikel
  • 25 December 2019, 23.25
  • Oleh: fahmizal
  • 0

Hello buddy, have you ever seen when you were on the road, then you heard such a vehicle with a loud sound like “ninu ninu ninu” then spontaneuosly people around you moved aside to give it a way?  Yes, the vehicle is using a police siren to alert the person that there is a serious situation.

What is police siren ? And who can use it?

Siren is like an alarm that a loud and making device to warn a natural disasters or alert the people that there is a serious situation . Sirens are used on emergency service vehicle such as ambulances, police cars and fire trucks.

How to make police siren circuit? Here we go..

Component used

  • 2 pcs IC NE 555
  • 2 pcs Electrolytic capacitor 10uF
  • Capasitor 1nF
  • Capasitor 100nF
  • Resistor 1k
  • Resistor 68k
  • 3 pcs Resistor 10k
  • Switch
  • Battery 9v
  • Speaker

Step 1 Circuit Design with Autodesk EAGLE

To make a circuit you have to design it first on Eagle Schematic then Routing layout on Eagle board.

Schematic Layout

Board Layout

You can download it here https://drive.google.com/drive/folders/1HNBYmteO0_WEXZ8j9Q-xM5Pcss4rDW4u?usp=sharing

Step 2 Circuit 3D Design with Autodesk Fusion

After you finished the schematic and board layout on EAGLE, you should to convert it to 3D design on Fusion.

Step 3 Simulating on Proteus

You have to simulating it first before you turn to make a PCB, is that work or not? If the circuit work, the speaker should be colored like this and have a sound.

Step 4 Make a PCB

Step make a PCB Board can be watched on this https://youtu.be/q6iu8Fe8UOY

This circuit works by using a siren that has 2 different tones and alternates with double IC NE 555. Each IC is set as a different tone generator, IC 1 is lower and IC 2 is higher. IC 1 produces lower noise by adding smaller resistors than resistors on the larger IC 2. Then the tone is connected via pin 5 IC NE 555. The way of combining these 2 notes is work by superimposing the low notes to the higher notes. While the time interval that occurs is regulated by a capacitor.

So how fellas? So simple right? Thank you for reading my articles.

Designed by Muffida Kurnalia Yovika Putri (19/447079/SV/16798)

 

 

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Universitas Gadjah Mada

Departemen Teknik Elektro dan Informatika, Sekolah Vokasi, Universitas Gadjah Mada
Jl. Grafika No. 2 Kampus UGM, Yogyakarta 55281

Penanggung Jawab : Dr. Fahmizal, S.T., M.Sc.

Site: http://fahmizal.staff.ugm.ac.id

Email : fahmizal@ugm.ac.id

 

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