How to Make a Clap-Clap on / Clap-Clap Off Switch Circuit!

How to Make a Clap-Clap on / Clap-Clap Off Switch Circuit!



In this article we show you how to make a simple clap switch project. This is a circuit which everyone us start to know about electronics, but sadly 50% of us fail to build it our own. And also we try to made it first time we face so many difficulties. Why this problems are arriving for such a small circuit? Because, they don’t have   correct guidance at its receiver end. In this article, we try to show you how to make a clap switch without any fault corrections.
Today we introduce two simple clap switch circuits.  First one is a simple transistor based circuit and second one is advanced mode, it can be also used to control any AC equipment at your home.
 Basic working of clap switch
Clap switch is a remote control system, it can control any electrical appliance at your home. Activation of a clap switch is not only with a clap, but also when we produce a good punchy sound.
Simple working principle of a clap switch is when microphone convert sound energy into electrical voltage, then these converted voltage is amplified and it results for the activation of relay.
Transistor clap switch

This is a simple and basic circuit.  You wish to make a clap switch without full knowledge, you can choose this circuit. There is only two components in this circuit. When ever we clap, the sound will produce and this produced sound is taken into the mic and it will convert into volt, then this voltage will passed into the base of the transistor. The base voltage of the transistor is above 0.7 volts, so it will become active and follow-through current.


Components
Value

Transistor
BC547
2
Resistor
10k
2
Resistor
1 M
1
Resistor
220 ohm
1
Capacitor
47uf
1
led

1
Battery
12v
1
mic

1

Clap Switch using 555 and 4017


PCB


 Mainly this project is based on with transistor, op-amp 741 and CD4017 IC. The microphone convert sound wave into electrical volt and it passed into the inverted input of the op-amp and then signal become amplified by an op-amp. R3 is used to control the sensitivity of the microphone and R1, R2, and VR1 Resistors are used for adjusting the sensitivity of op-amp. After the amplification process completed, it will passed through the pin number 14 of the IC CD4017. When the pin 14 become high, the output of the CD4017 becomes high, but they are only needed for the required outputs. This clap switch circuit have 2 outputs, one for the led indication and other one to activate the relay.

We are taken Q1 and Q2 outputs and the 3rd pin is connected into the MR pin of CD4017 for to disabling others outputs.

Components
Value

Resistors
22k
1
10k
2
1k
4
pot
10k
1
Ic’s
Cd4017
1
741(opamp)
1
diode
1n4007
1
Transistor
Bc547
1
LED’S

1
MIC

1



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