Overcurrent Protection Circuit | Tutorial 

I am sorry to rain in your parade but what you have here is not an overcurrent protection circuit. What you are showing is that with 100 ohms resistor, there is not enough voltage between the collector and emitter of the transistors to turn the LED ON. With 100 ohms resistors the collector-to-emitter voltage (VCE) of the transistors are below 1 volt. If you change the resistor to a lower value, let’s say 40 ohms, you should see the LED turn ON and you do not necessarily have a short-circuit condition. Please check this video ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-fqeUpATJlZY.html where a real short-circuit protection is discussed. Better, check the Part 4 at ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-P5Cc14GrIx4.html where a standard overcurrent protection is demonstrated.

This does work, but heavily depends on the Hfe of the transistor. This can vary between transistors a lot. So much that this circuit cannot be used for actual hardware design. But it is a nice demo.

It is a nice demo but you should actually explain how the circuit works and why the voltage drops when the short cut occurs.

Very well explained

Great content. Please blink more 🙏

Thank you so much for teaching the basics.

So nice thanks sir

So nice thanks

The world's best teacher thanks