Configurable alarm with Multitone

This configurable alarm produces different types of tones. It can be selected by switches, this circuit can be activated by temperature by connecting applications with the switch we can get different alarm tones for each applications.




The IC CD4060 is a CMOS oscillator with a 14 stage ripple counter/divider. This IC has three oscillator terminals by varying components value connected with this terminals we can get variable frequency range.

configurable-alarm-with-multi-tone

Components List

S.No Name Quantity
1. IC CD4060 1
2. NTC 100KΩ thermister 1
3. Loud speaker 8Ω 1
4. Resistor 1KΩ
Resistor 10kΩ
Resistor 220kΩ
Resistor 10kΩ
Resistor 5.6kΩ
Resistor 10Ω
Variable resistor 22KΩ
Variable resistor 100KΩ
3
2
1
1
1
1
1
1
5. LED 2
6. Transistor BC337 npn
BD139 npn
2
1
7. Capacitor 0.33uF
Capacitor 100pF
Capacitor 10nF
Capacitor 120pF
Capacitor 100uF/10V
2
1
1
1
1
8. ON/OFF array-10 switch 1

 



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