How does a mobile charger work? SMPS with Opto-Coupler.

Circuit Diagram - drive.google.com/file/d/1TWNf6OfTSGOfDitfw5u4qp9Hv… Correction - In the video the fusible resistor is 2.6Ω and not 260kΩ.

Another advantage of these types of power supplies (besides their reduced size) is universal input voltage. Most of these can operate from 100V to 240V AC.

Wow, i had no idea that was all going on in those little power adaptors. I thought it was just a step down transformer. What brilliant engineering! Thanks so much for making this video!

I'm just gonna pretend I understood it all

Unfortunately, brain.exe has stopped working. Force close

I like how those "AC > DC > AC > DC" conversion is having a great efficiency

this is amazing. Don´t understand why people don´t put things like this on tv shows.

Being a visual learner, this will help tons. I just need to watch it 20 - 30 more times

This video answered and settled a big question in my mind that had remained unanswered for many years. Thanks a zillion,now I can go back to work

state of the art video tutorial, I'm searching this kind of explanation for years now, finally someone did this, great thanks 👍👍

YOU MUST BE A VERY SEASONED ELECTRONIC ENGINEER. YOUR EXPLANATION IS VERY CLEAR!!

This is just beautiful. Never seen such a good explanation about electronics.

I would not expect something so simple in a modern phone charger. I'd expect this in the 90's. This is probably the cheapest way to get a regulated +5V, I can't argue with that! From what I see, the transistors are in an astable multivibrator configuration, then they go into a pulse transformer. What I would expect is common mode chokes for EMI, a high-efficiency switch-mode controller with a fast FET to reduce time in the linear region for efficiency purposes, and MOV ( or . Great video! The animations and explanation was great (I smiled when I heard you explain why you can't just use a transformer at 50/60Hz). I'm an electrical engineer and I approve.

Best video you literally changed a loser in electronic concepts to a topper in his class I give you a applaud for that very few people have the talent and compassion to turn something interesting and complicated things as simple,keep up the good work man.

You make it understand better with 3D visuals and animation.👍

Im glad i found this gem of a video. Thank you very much.

Great Explanation 👍👍👍

I've gone through many such videos, but this one is far the BEST video and awesome explanation. I also loved it because he gave the full circuit diagram. Many thanks.

i'll be proud to share it on all social media man !!!!! just perfect !

I like the way you explain. Very simple, logical and brief (knowing that most viewers are familiar with electricity). Thank you and keep it up!