Simple
Siren
The
circuit for this project is relatively difficult for beginners as the number of
components used is close to about 25. If you are able to assemble this
correctly on the breadboard this works perfectly and gives very good siren
sound. Watch the video to how the sound can be changed by controlling the Pot.
The circuit assembled on a
breadboard.
Please note that the capacitors (white square shaped) C1 and C2 used on
the board are with value 33n instead of 22n.
you can watch this video........
REF
|
PART
TYPE
|
PART
NAME
|
VALUE
|
COUNT
|
Bat1
|
BATTERYPACK
|
Battery Pack 3V AA
|
--
|
1
|
C1,2
|
CAPACITOR
|
Capacitor 22n
|
22n
|
2
|
C3,7
|
ELECCAPACITOR
|
Electrolytic Capacitor 100uF
|
100uF
|
2
|
C4,5
|
ELECCAPACITOR
|
Electrolytic Capacitor 22uF
|
22uF
|
2
|
C6
|
ELECCAPACITOR
|
Electrolytic Capacitor 1uF
|
1uF
|
1
|
LS1
|
SPEAKER
|
Speaker 8 Ohm
|
8Ohm
|
1
|
R1,3
|
RESISTOR
|
Resistor 18K
|
18K
|
2
|
R10
|
RESISTOR
|
Resistor 22K
|
22K
|
1
|
R2
|
RESISTOR
|
Resistor 39K
|
39K
|
1
|
R4
|
RESISTOR
|
Resistor 1.2K
|
1.2K
|
1
|
R5
|
POT
|
Pot Meter 50K
|
50K
|
1
|
R6
|
RESISTOR
|
Resistor 470Ohm
|
470Ohm
|
1
|
R7
|
RESISTOR
|
Resistor 6.8K
|
6.8K
|
1
|
R8
|
RESISTOR
|
Resistor 15K
|
15K
|
1
|
R9
|
RESISTOR
|
Resistor 2.2K
|
2.2K
|
1
|
TR1,2,4,5
|
TRANSISTOR
|
Transistor BC547
|
547BC
|
4
|
TR3
|
TRANSISTOR
|
Transistor BC557
|
557BC
|
1
|
|
Approximate cost for building this project is Rs 173.00
|
|
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