clap switch.pdf

Clap Switch is a device that is simply operated by sound i.e switch ‘on’ or ‘off’ the connected device through a clap sound. This is really for handicap person. It may be a thing of fun for all age hobbiest . This circuit will switch ‘on’ any Appliance connected to it(it may be a bulb, a fan, a tape, recorder or even a T.V set) through its relay (acting as a switch) on the sound of a clap and will switch it ‘off’ on the sound of second clap.

1. PRESENTED BY: SUBMITTED TO:
JAYANENDRA GUPTA&
GROUP MEMBERS
BRANCH–ELECTRONICS ENGG.
………………………………

2. MEGA PROJECT
CLAP SWITCH
BRANCH –ELECTRONICS
ENGINEEING (Final Year)
S.NO NAME ENROLLMENT NO
1JAYANENDRA GUPTA E1780733000010
2KANHAIYA LAL E1780733000011
3RAKSHAK KUMAR E1780733000026
4NIRAJ KUMAR PRAJAPATI E18480738000001
5SANTOSH KUMAR KANAUJIYAE1780733000030
6INDRASEN CHAUHAN E1780733000009
GROUP MEMBERS
PRESENTAION ON

3. CONTENTS
➢INTRODUCTION
➢CIRCUIT DESCRIPTION
➢COMPONENTS USED IN CIRCUIT
➢CIRCUIT DIAGRAM
➢WORKING
➢APPLICATION OF CIRCUIT
➢ADVANTAGES OF CIRCUIT
➢PHOTOOFPROJECT

4. INTRODUCTION
Clap Switch is a device that is simply
operated by sound i.eswitch ‘on’ or ‘off’
the connected device through a clap
sound. This is really for handicap
person. It may be a thing of fun for all
age hobbiest.
This circuit will switch ‘on’ any
Appliance connected to it(it may be a
bulb, a fan, a tape, recorder or even a
T.V set) through its relay (acting as a
switch) on the sound of a clap and will
switch it ‘off’ on the sound of second
clap.

5. In the circuit sound signals is converted into
electrical signals when a clap sound hits the
condenser microphone.
T-1 is an audio amplifier working in the AC
amplifier mode , T-2 & T-3 are flip flop. When
the sound strikes the mic, T-1 conducts and
changes states of T-2 &T-3 i.e. if T-2 is
conducting then T-3 is not conducting and vice
versa. Again when sound waves strikes the
microphone states of T-2 & T-3 are reversed. T-
4 is the drives of the relay. Hence whenever
there is a clapping sound the relay either
energizes or de-energizes as per the state of
the transistor T-2 & T-3 accordingly the
appliance connected (LED bulb here) gets on or
off.
CIRCUIT DESCRIPTION

6. COMPONENTS USED
SEMICONDUCTORS:
1.T-1 to T-4 NPN SILICON TRANSISTORS
2.D-1toD-4 SILICON DIODES
RESISTORS:
1.R-1,R-8,R-9,R-1310 KILO OHMS
2.R-2,R-5,R-12 2.2 MEGA OHMS
3.R-3 270 MEGA OHMS
4.R-4 2.2 KILOOHMS
5.R-6,R-10 22 KILO OHMS
6.R-7,R-11 1.5 KILO OHMS
7.R-14 390OHMS
CAPACITORS:
1.C-1 0.01µFARAD CAPACITOR
2.C-2,C-3 0.04 µ FARAD CAPACITOR
MISCELLANEOUS:
1.CONDENSER MICSMALL TYPE
2.LED LIGHTEMITTING DIODE
3.LED BULB LED BULB 6V DC
4.BATTERY 9VOLTDC

7. CIRCUIT DIAGRAM

8. WORKING OF CIRCUIT
A circuited switch, which operates
with sound of clapping hands or
something similar; i.e. the switch
comes to 'on' position when clapped
once or twice, and to'off' position
when again clapped once or twice
(depends on circuit design)
A clap -switch circuit is a sound
sensitive circuit. .
The operation of the circuit is simple.
Clap andthe lamp turns on. Clap
again and it turns off.

9. APPLICATION OF CIRCUIT
ClapSwitchisnotrestricted
toturntheLEDsONand
OFF,butitcanbeusedin
anyelectricappliancessuch
asTubeLight,Fan,Radioor
anyotherbasiccircuitwhich
youwanttoturnONbya
Sound.

10. ADVANTAGES OF CIRCUIT
1.ItcanbeusedtoturnONandOFF
theLEDorLAMPsimply,by
clappingyourhands.
2.WecanalsoremoveLEDsand
placeaFANoranyotherelectric
componentontheoutputinorderto
getthedesiredresult.

11. TRANSISTORS
RESISTORS

12. CAPACITORS
CONDENSER MIC

13. LED
9 VOLT BATTRY

14. PHOTO OF PROJECT

15. THANKS
TO
ALL