Four Tone Siren/Alarm Circuit

Introduction:

                       This Project Is Very Simple Project. This Project Is Used IC Is UM 3561 Memory IC. This Project Budget Is Less Then To 200 Rupees.

Working:

               This Project Operating Voltage Is 6 Volt To 9 Volt.This Project's Sound Is Operating by Micro Switch.This UM3561 IC is Sounds In-Build Memory IC and 2sc9014 Transistor Is Amplifying the Sound.8 Ohms Or 4 Ohms 0.5 Watt Speaker is Used in this Circuit. When the Power Switch is on,Thus The Output Sound was Police Siren Sound. When The First Micro Switch is on, Thus the Output Sound was Ambulance Siren Sound. When the Second Micro Switch Is on,Thus The Output Sound was Riffle Gun Sound. When the Third Switch Is on,Thus The Bell Sound was alarming.

Circuit Diagram:

 Part List:

1)  UM 3561 IC=1

2)  8 Pin IC Base=1

3)  2SC9014 Transistor=1
4)  8Ω (or) 4Ω 0.5W Speaker=1
5)  Micro Push Switch=3
6)  10K Resistor=1
7)  330K Resistor=1
8)  9V Battery (or) Power supply=1
9)  PCB Board=1
10)  Some Wires

 

Uses of This Project:

                              This Project Is Used for School Students. It Is Used to Making A Calling Bell Project.

 

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                                                                                                            By,

G. Guruvel Sarveshwar,

EEE Dept.

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