clap switch

CLAP SWITCH

By N.Tejaswani

Clap switch means…!!Clap switch is switch which can switch on/off

any electrical circuit by the sound of the clap

Principle….

Converts the sound signal into electrical energy

Basic Idea on clap switch isBasic idea on clap switch is that the electric

microphone pick up the sound of your claps, coughs, or any sound to switch ON/OFF the circuit

Components are..1.Resistors2.capacitors3.Battery 4.Transistor5.Relay

Circuit diagram

Block diagram

WorkingAudio amplifierSound signal is received by AUDIO

AMPLIFIER . Here the given sound signal is converted

into electrical signal and then amplified by using

transistors.

Flip flop circuit

It consists of two transistors, one for the on position and the other for the off position.

For this reason it is also known as bi-stable multi vibrator.

Circuit amplifier

The outcome of this circuit is Electrical signal.

This electrical signal is very weak so we have use another transistor in this circuit.

ADVANTAGES1. The primary application involves an elderly

or mobility-impaired person.2. We can turn something (e.g. a lamp) on and

off from any location in the room (e.g.while lying in the bed) simply by clapping our

hands.3. Low cost and reliable circuit.4. Complete elimination of man power.5. Energy efficient.

DISADVATAGES1. It is generally cumbersome to have to clap

one’s hands to turn something on or off and it is greatly seen as simpler for most use

cases to use a traditional light switch.2. Unless we use a filter in the circuit , it is not

that advantageous. So that circuit activates only for clap of particular

frequencies and then it becomes accurate.

Any Questions..?