Flip-Flop LED Using Transistor BC547 | Simple LED Blinker Circuit

Published at : 17 Dec 2025

Flip-Flop LED Using Transistor BC547 | Simple LED Blinker Circuit 🔁

In this video, you will learn how to make a Flip-Flop LED circuit using BC547 transistors. This is a beginner-friendly astable multivibrator circuit that makes two LEDs blink alternately. Perfect for electronics students, hobbyists, and DIY lovers!


🧰 Components Used:

2 x BC547 Transistors
2 x LEDs
2 x 1kΩ Resistors
2 x 10kΩ Resistors
2 x 10µF Capacitors
Jumper Wires
9V Battery


⚙️ Working Principle:

This flip-flop circuit works using two NPN transistors (BC547) that turn on and off in a loop. This makes the LEDs flash one after the other continuously.

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📌 Topics Covered / Useful For:


Flip-flop LED using transistor
LED blinker circuit using BC547
Astable multivibrator with BC547
DIY electronics for beginners
School science fair projects
Basic transistor circuit project
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project
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Wadi tech
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📺 Watch till the end for the working demo and full explanation!


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