Clapping Switch With BC547 Transistor

About: Share diy projects to those who have the same hobby with me

Hii Friend,

Today I am going to make a circuit of Clapping switch with BC547 Transistor.In Earlier We made clapping switch using LM555 IC.

Let's get started,

Teacher Notes

Teachers! Did you use this instructable in your classroom?
Add a Teacher Note to share how you incorporated it into your lesson.

Step 1: Take All Components As Shown Below

Components required -

(1.) Transistor - BC547 x1

(2.) Microphone x1

(3.) Capacitor - 25V 47uf x1

(4.) Resistor - 1M x1

(5.) Resistor - 10K x1

(6.) Resistor - 120K x1

(7.) Battery - 9V

(8.) Battery clipper

(9.) LED - 3V x1

(10.) Resistor - 220 ohm x1

Step 2: Transistor - BC547

C - Collector

B - Base and

E - Emmiter

Step 3: Circuit Diagram

This is the circuit diagram of this project.

Connect all components according to this circuit diagram.

Step 4: Connect Both Transistors

Firstly we have to connect both transistors.

Solder Collector Pin of transistor-1 to Base pin of transistor-2 as solder in the picture.

Step 5: Connect 47uf Capacitor

Next we have to connect 47uf capacitor.

Solder -ve pin of capacitor to base pin of transistor-1.

Step 6: Connect Emmiter Pin of Both Transistor

Next Solder emmiter pin of transistor-1 to transistor-2 as solder in the picture.

Step 7: Connect 10K Resistor

Solder 10K Resistor to +ve pin of capacitor.

Step 8: Connect 1M Resistor

Next solder 1M Resistor to base pin of transistor-1.

Step 9: Connect 120K Resistor

Solder 120K Resistor to collector pin of transistor-1 as solder in the picture.

Step 10: Connect 220 Ohm Resistor

Solder 220 ohm resistor to -ve leg of LED.

Step 11: Connect LED to Circuit

Solder 220 ohm resistor which is connected to -ve leg of LED to the Collector Pin of Transistor-2 as solder in the picture.

Step 12: Connect +ve Leg of LED

Solder +ve leg of LED to 10K,1M and 120K resistor as you can see in the picture.

Step 13: Connect MIC

Solder +ve wire of MIC to +ve pin of Capacitor and

solder -ve wire to emmiter pin of Transistors as you can see in the picture.

Step 14: Connect Battery Clipper Wire

Now we have to connect battery clipper wire to the circuit.

Solder +ve wire of battery clipper to +ve leg of LED and

solder -ve wire of battery clipper to Emmiter pin of transistors as you can see in the picture.

And Connect Battery to battery clipper.

To activate LED Do Clap.

Thank you

Be the First to Share


    • Made with Math Contest

      Made with Math Contest
    • Multi-Discipline Contest

      Multi-Discipline Contest
    • Robotics Contest

      Robotics Contest