How to make Clap Switch using only Two Transistor || Best Science Project 2026

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If you're an engineering student or an electronics hobbyist, the Altium Student Lab is a great place to grow your PCB design knowledge and strengthen your practical skills.

Altium Student Lab Link:
https://www.altium.com/in/yt/skrelect...

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Hello friends,

In this video, I am showing a simple and practical Clap Switch Circuit made using BC547 NPN transistors and basic electronic components.

This project demonstrates how we can control an electrical load using sound (clap) without using any microcontroller or relay module. When a clap sound is detected by the microphone, the circuit processes the signal using two BC547 transistors and toggles the output accordingly.

It is a perfect project for basic electronics learning, school science exhibitions, college practicals, and for beginners who want to understand transistor-based switching circuits. The complete circuit is low-cost, easy to build, and can be assembled at home using easily available components.

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Timestamps:

00:00 Introduction
00:42 Project Making Start
02:56 Sponsor
05:09 Testing & Working

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Components Required:

1. BC547 NPN Transistor x 2
2. Electret Microphone
3. Resistors (Different Values)
4. Capacitor
5. LED / Load
6. Battery / Power Supply
7. Switch
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Tools Required:

1. Soldering Iron:
https://quartzcomponents.com/products...

2. Solder Wire:
https://quartzcomponents.com/products...

3. Glue Gun:
https://quartzcomponents.com/products...

4. Glue Stick:
https://quartzcomponents.com/products...

5. Wire Cutter:
https://quartzcomponents.com/products...

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Social Media:

Instagram:
  / skr_electronics_lab  

For business enquiries:
skrelectronicslab@gmail.com

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Thanks for watching.
Have a nice day and keep building useful electronics projects.

#skr_electronics_lab
#clapswitch
#bc547
#transistorproject
#basicelectronics
#scienceexhibition
#electronicsproject