This anti-sleep alarm keeps you awake. This circuit keeps you vigilant by sounding intermittent beeps and emitting flashing light so as to remind you that you are not on the bed but driving a vehicle. It works only at night due to the control of a light-dependent resistor (LDR) based switch.

1. WELCOME TO
OUR
PRESENTATION

2. Team Members
DEEPTHI J
ANUSHA R
APARNAA S L
BINDUSREE D H

3. nNnNAME
NCNAME WJIPWNN
NAME OF PROJECT IS

4. CIRCUIT DIAGRAM
POWER SUPPLY
COMPONENTS USED
APPLICATION
OPERATION OF THE PRODUCT
CONCLUSION

5. COMPONENTS USED
RESISTOR : Two Terminal Electro Component
CAPACITOR: Device for storing electric charge
TRANSISTOR: Semiconductor device used to amplify and switch Electric
signals
DIODE : Conducts electric current in one direction
RELAY : Electrically Operated Switch

6. PUSH TO ‘ON’ SWITCH
A push- button (also spelled push button)(press-
button in the UK) or simply button is a simple switch
mechanism for controlling some aspect of a machine
or a process. Buttons are typically made out of hard
materials, usually plastic or metal. The surface is
usually flat or shaped to accommodate the human
finger or hand , so as to be easily depressed or
pushed.

7. BUZZER
A piezoelectric sensor is a device that uses the
piezoelectric effect to measure pressure ,
acceleration , strain (or) force by converting
them to an electrical signal.

8. APPLICATION
They are as Follows:
● This Circuit Saves Time and Electricity.
● It Helps To Prevent From Dozing Off While Driving by Sounding a
Beep at a Fixed Time Interval.
● The Circuit Is Capable Of Switching Off The Light and Other
Appliances Automatically in The Room.

9. Operation Of The Product
● The circuit is built around IC 555, transistors BC547, relay RL1 and buzzer.
● The 555(IC) is configured as an monostable multi vibrator to generate clock
for the timer (IC2).
● The reset of ICs, transistors T1,T2 and T3 drive the buzzer to sound
● an intermadiate beep.
● If IC2 is not reset through S1 at that time, around 1 minute later the output of
gate N4 goes high and transistor T4 conducts.
● As the output of gate N4 is connected to the clock input pin 10 of IC2 through
diode D, further counting stops and the relay RL1 energizes to deactivate all
the appliances.This state changes only when IC1 is reset by pressing switch
S1.

10. INTEGRATED CIRCUIT’ S
● The 555 timer IC is a very simple device
to use . With very few extra components
it can be used as an ASTABLE timer to
make flashing light circuit or to make a
loudspeaker produce a sound and it
can be used as a MONOSTABLE circuit
to switch a device on AFTER a set time
or to switch a device on For a set time.
● The 555 makes it easy to get accurate
time delays.
IC555

11. Rectifier
The next step is to force current to
flow in one direction only,
preventing the alternations that
occur in the transformer and the
ac line. This process is known as
rectification, and the circuit that
accomplishes the task is the
rectifier.
Its job to reduce the pulses from the
rectifier to a smaller ripple voltage.No
filter configuration can be absolutely
perfect, but a properly designed filter will
provide a DC output voltage with only a
small ac ripple.
FILTER

12. Regulator
Voltage regulator ICs are
available with fixed (typically
5,12 and 15V) or variable
output voltages. They are also
rated by the maximum current
they can pass . Most
regulators include some
automatic protection from
excessive current and
overheating.
The transformer serves to
convert the ac line voltage to a
voltage level more appropriate to
the needs of the circuit to be
powered.
At the same time , the
transformer provides electrical
isolation between the ac line and
the circuit being powered , which
is an important safety
consideration.
Transformer

13. Components Used
IC555
RELAY
Push To ”ON” Switch
Piezo-Buzzer
Resistor
Capacitor
Transistor
Diode

14. Conclusion
ANTI SLEEP ALARM
Precisely we have seen that when we set the
particular resistance in the variable resistors, its
output comes within a particular time set by the user .
Thus we can use this product for our home appliance
for switching purpose to save time and electricity..

15. THANK YOU FOR
JOINING WITH
US…………...