Circuit Diagram - drive.google.com/file/d/1TWNf6OfTSGOfDitfw5u4qp9Hvs_lkU74/view?usp=sharing Correction - In the video the fusible resistor is 2.6Ω and not 260kΩ.

@DipElectronicsLAB

3 жыл бұрын

can I use your Circuit in my video? because I make video in Hindi language and I want to explain same things in Hindi language, I will waiting for your response!

@ExplorerStuff

3 жыл бұрын

@@DipElectronicsLAB Sure.

@IamPrakashRanjan

3 жыл бұрын

Hi, Please make a video on how to design 220VAC to 24VDC, 12VDC, 5VDC. Basically teardown of HILINK or Mornsun AC-DC converters.

@ghaniben1

3 жыл бұрын

thickness of the wire ?

@casmirodsouza5582

3 жыл бұрын

Nice

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.

@ExplorerStuff

3 жыл бұрын

Thank you for mentioning it...😀

@jesusblessmeheavenly6958

2 жыл бұрын

Thanks a lot for that inpur

@klmkt4339

2 жыл бұрын

When we use it in 100v eg in train, the charging time is very long may be due to less output volt and current

@LeftOverMacNCheese

2 жыл бұрын

@@klmkt4339 it depends on the charger bruh

@gizaha

2 жыл бұрын

And efficiency and standby consumption.

I'm just gonna pretend I understood it all

@singlepunchgamer6459

3 жыл бұрын

😂🙏

@sandeshclament3550

3 жыл бұрын

me too😄

@PranavMaru

2 жыл бұрын

Me too 😂😂😂

@johnnguyen8956

2 жыл бұрын

120V AC go through the transformer in order to step down the voltage then it go to the 4 diodes which we call it bridge rectifier to convert AC to DC. The capacitor is added parallel to it because it will reduce the ripple voltage. not sure about why the using the transistors but i think it increases the frequency so they can reduce the size of capacitor and transformer.

@binaryglitch64

2 жыл бұрын

Electricity takes a while to truly understand, I'm a journeyman electrician and electrical engineering student, I've been messing with electricity since I was 6 taking apart my walkie-talkies, and there's still a lot left for me to learn. If you care to learn, you will eventually get to a point where this lesson will seem so easy it's like watching a video on how to tie your shoes. Just stick with it.

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!

@Epsicronics

Жыл бұрын

It used to be just a transformer and voltage regulator circuitry but that is extremely huge, heavy and inefficient so this is the modern design

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

@goyonman9655

2 жыл бұрын

The ratings wold be low

@gabrielphilips6980

Жыл бұрын

Because they want you to be dumb

@BadThrusher

7 ай бұрын

​@@gabrielphilips6980audience wants dumb things like Cerebrity news, global warming and Covid19 brainwash news

@abrammolamu1029

2 ай бұрын

True is should be basic knowledge

Unfortunately, brain.exe has stopped working. Force close

@anindyamitra5091

3 жыл бұрын

Watch some Diode Gone Wild videos, brain.exe will become permanently corrupted😂

@rohithnechikkunnan8374

3 жыл бұрын

@@anindyamitra5091 😂

@rohithnechikkunnan8374

3 жыл бұрын

Lol😂

@Rakib94988

3 жыл бұрын

@@anindyamitra5091 lol man😂😂😂😂😂 so funny😂😂😂😂😂😂😂😂

@florinpandele5205

3 жыл бұрын

Hmm..we have the same OS. Mine crashed too, after the oscillator story. Any upgrade download link ? :D

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

@emil.honganmaki5461

2 жыл бұрын

thing simplesimple

@Den_Electro

Жыл бұрын

watch my video friend! kzread.info/dash/bejne/hIiLldFym6rag5c.html

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

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

@ExplorerStuff

3 жыл бұрын

Glad you liked it.😀

@hass_ra80

2 жыл бұрын

@@ExplorerStuff Hello, Can we use a 12v DC input in stead of 220v AC? If not, what we should to change in the circuit to be 12v DC input? Thx

@prathamkalgutkar7538

2 жыл бұрын

@@hass_ra80 Simply use a Linear Regulator to convert 12VDC to 5VDC. If you want higher efficiency then you can use a Buck Convertor but the ripple on output will be high and might damage batteries without proper protection. You will have to run the numbers or simulate, prototype it for best results for your application

@sigataros

14 күн бұрын

@@hass_ra80 If you have a bridge rectifier to make all your outlets 12v DC, then you won't be able to step it down with a transformer, every power supply would have to use a DC-DC converter which is possible but probably less efficient, and the AC standard is already established everywhere

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

@hasithaweerasinghe5513

3 жыл бұрын

I also....

@bagatur9289

3 жыл бұрын

KARABAĞ AZERBAYCANDIR GARDAAAAŞ

@kenanelicanov2327

3 жыл бұрын

@@bagatur9289 evet öyledir abla

@persona83

3 жыл бұрын

Me too. Always loved electronics but rarely found good material about the matter.

@steventhehistorian

2 жыл бұрын

Agreed. As a visual learner I have always struggled to understand signal paths through circuits. Whenever an inductor or capacitor is introduced it starts to get very confusing for me because there's so much going on. Visuals like this one are the key to my understanding of these concepts. Thank you so much to the creator of this video!

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.

@DRAIK08080808

2 жыл бұрын

My exact thoughts, I would've guessed that most of modern phones uses a Buck converter /cuk regulator or another synchronous SMPS circuit instead

@gem_amazingworks

2 жыл бұрын

@@DRAIK08080808 yah for efficiency. Cause this more like a linear circuit that would decipate power in form of heat.

@westelaudio943

2 жыл бұрын

90s chargers were better than this. This curcuit is copied (with some mistakes, like component values and seconsary diode orientation) from the cheapest chargers you can buy. They are very unsafe and don't last long, but are great to demonstrate the basic principle which is the same for all flyback transformer PSUs, no matter if old, new, cheap or expensive.

@westelaudio943

2 жыл бұрын

@@DRAIK08080808 The output needs to be isolated from mains. Can't use a buck converter.

This video is just a whole university subject teached in just 6 minutes with every detail fully understandable even for beginners. Till now the best video out there for explaining the working principle of an everyday appliance we all use.

@ExplorerStuff

3 жыл бұрын

Glad you think so.😄

@thousandsunny3103

Жыл бұрын

Sorry for being dumber than a beginner, even though I tested at 132 IQ. I just wish I could find the video where they start at the beginning.

@imammaarifarif4388

Жыл бұрын

Bagaimana cara menambah ampere pada charger?? Tq

@LtdJorge

Жыл бұрын

​@@imammaarifarif4388 Change the transistors. The T1 is gating how many amps are let through, if you change it for one with more rated amps, it should let more go through. I guess you'd have to then change the transformer and capacitors as well, probably even the Schottky diode.

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

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.

بہت اچھے انداز میں موبائل charging کے بارے سمجھایا. شاباش ذوالفقار پاکستان اسلام آباد

@engineerkohat

3 жыл бұрын

میرے چینل پر ائیے۔ اس سے بھی بہتر ویڈیوز ملیں گی۔

I had a simplistic idea that there is a step-down transformer to reduce the voltage, and a zener diode to convert AC to DC, throw in a couple of resistors and capacitors to smoother the output. That very high frequency AC current needs a small transformer is new to me. Many thanks for the enlightenment.

@Epsicronics

Жыл бұрын

Yap, thats how they used to work, this new design is simply for space and efficiency

Why the robot voice?

@rococoblue

Ай бұрын

😂 because it's cool.😂

@prabhudaspawar9137

11 күн бұрын

Not robot. It's ai voice😂

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.

@Den_Electro

Жыл бұрын

watch my video friend! kzread.info/dash/bejne/hIiLldFym6rag5c.html

@hosseinranjbar2810

7 ай бұрын

Good on you for explanation!!!!!!!!

I love the way you portrayed the ac voltage and also how the capacitor fills up and releases, good job.

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

I love these tiny 5v power supplies. They are so tiny and cheap but can pump out so much power.

haw, 57k subscribers... you should have atleast 1M.... wait for a while, we indians are coming. you will reach 1M soon.

Its a highly appreciable creation. It seems that a very good & honest ambition worked behind this to create such a stunning, incredible & dazzling demonstration. Thanks a lot again. Wishing u a bright future & gteat success.

@hafeezavf2723

2 жыл бұрын

Best of luck

I can't deny this is very dedicated material which can be used from consumers to students who are interested in these fields.

I did not know how they work, but I designed one (not a charger but same concept) with 100 V, 3 A DC almost identical to the workings of this. I love how knowing how electrical components work you will do the same things meaning it's the best way :D

The circuit presented use only two transistors. It is a good minimal design reminding engineers what was done before specialized chips became available. Most switching power supplies now use a small PWM chip which control the gate of a FET transistor (often integrated in the chip). They often skip the opto coupler by sensing the back emf on the primary side. This back emf can be sensed only after a delay in the rising or falling edge. These chip also measure the current on the FET and turn off if too large, indicating that saturation is reached (when the DC resistance of the coil becomes the load, no back emf voltage anymore ; the inductance is fully discharged of magnetic energy).

@gustavrsh

Жыл бұрын

Still most of the concepts introduced in this video remain valid

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!

So the optocoupler is the quartz time keeper and voltage regulator feedback loop, when activated, it shunts the primary, regulating voltage and the cycle repeats. What a cool circuit!

I didn't understand the circuit completely but got the principle of operation, thank you, my crappy school didn't even bother to mention the existence of these

someone please give this man a medal ❤

I was looking for this kind of explanation video for so many years finally I got it. Please keep making such videos Thank you very much

@ShyamNiwas

3 жыл бұрын

#ShyamNivasShahu

@Den_Electro

Жыл бұрын

watch my video friend! kzread.info/dash/bejne/hIiLldFym6rag5c.html

When you create real value content, is when your videos and channel start going up. Thumbs up for the good content.

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

I think this is the video that I am searching from a week..... Thanks alot

Thank you to everyone who contributed to this great video. great explanation.

@ROHITHS-lf4cl

Жыл бұрын

9663+

That makes sense. I could follow this enough to understand the core principals

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

Amazing explanation. Wish my Engineering Professors had explained it like this.

@steventhehistorian

2 жыл бұрын

As far as I can tell, the typical engineering professor uses their knowledge like a weapon to basically rub their students' faces in the dirt. So many people go through engineering programs and either don't make it, or barely make it, but gain no intuition for the concepts. Why does it continue to get taught like that?!

Great Explanation 👍👍👍

@Papunanayak

3 жыл бұрын

I am also your subscriber

@sadabraza8658

3 жыл бұрын

Aap bhi to great hai sir

@surojelectronic7745

3 жыл бұрын

Abhi bahut acche ho

@surojelectronic7745

3 жыл бұрын

I am your real subscriber

@shivasisdash7343

3 жыл бұрын

Can u find the mistake in this video

Super cool - I was wondering for ad least couple years how it is working and how that optocoupler works :) Thank You very much!

@Den_Electro

Жыл бұрын

watch my video friend! kzread.info/dash/bejne/hIiLldFym6rag5c.html

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

Excellent explanation with animation - crystal clear - keep making more such informative videos

@Den_Electro

Жыл бұрын

watch my video friend! kzread.info/dash/bejne/hIiLldFym6rag5c.html

While I recognized n understand (most if not) HOW each of electronic's components (here n elsewhere), its WHY these (common) components being used for in a circuit and understanding them (visually as I m visual oriented type of person) that baffles me (almost) every time for years that I've been trying into electronics. Thus, thanks for the vid ❤️🌹

Wonderful explanation which I never heard. From a 25yrs old engineer

The conventional AC/DC converter is a 220/5V single-phase transformer + full-wave bridge rectifier( four diodes arranged like that in the video) + filtering capacitor. However, this circuit will result in a heavier phone charger since the frequency used is 50Hz Note that the transformer’s size decreases by increasing the frequency. So they thought about this idea mentioned in the video We will use a full-wave bridge rectifier converting from AC into DC, then we apply that DC voltage on an oscillator circuit that converts that DC into a high-frequency AC voltage, so in the final step, we can easily use a small transformer to a 5 V , however, this voltage is AC So we will use one diode( half-wave rectifier) which is more economical than a full wave rectifier, and a capacitor for filtering purposes! The final input/output voltage is 220V_AC to 5V_DC!!!

Wow.....amazing video. I've watched about 2 dozen similar videos (many from well known channels) trying to understand what you have communicated so effectively and simply in just 6 minutes! More please! Subscribed with 🔔!

@Den_Electro

Жыл бұрын

watch my video friend! kzread.info/dash/bejne/hIiLldFym6rag5c.html

Finally someone is very enthusiastic to teach students the right way

@ExplorerStuff

3 жыл бұрын

Thank you.😄

Great explanation and animation. I would love to see one more such a video using mosfet.

You Deserves More Subscribers🤗

Very well explained. This video will help me in repairing some faulty mobile charger.

@sthandiwe7825

3 жыл бұрын

This is very basic switching power supply, the principle is the same but you might find thay some are much complex depending on the design and output power requirements. I am electronkcs technician and i somehow do repair advanced switching power sjpply down to component level. Goodluck mate.

@yjtechnical4700

3 жыл бұрын

Thanks@@sthandiwe7825 for the information and encouragement.

@Den_Electro

Жыл бұрын

watch my video friend! kzread.info/dash/bejne/hIiLldFym6rag5c.html

As they say..."The ones who really want to learn do...."The tools are available.." and I thank u and all who share the knowledge...

@aliveandwellinisrael2507

Жыл бұрын

With AC, it's probably a good idea to "know" before "doing" lol

@Explorer The voltage of the primary coil seems to be a pulsating dc, not ac. That means pulsating dc can induce voltage( not only ac) in the secondary coil of transformer

Sir normally fuseable resistors are using low value....Like 10 ohms,15ohms.in this circuit using 260k please check.

@ExplorerStuff

3 жыл бұрын

Now that you mentioned it. Maybe the third band was gold and not yellow. So it will be 2.6 ohms. The video cannot be changed but I will mention it in the description. Thank you for noticing.

@TubeLightDiscover

3 жыл бұрын

@@ExplorerStuff yes.... fusable resistor are protect our power supply for short circuit protection and high voltage spike.i have a electronics related youtube channel plz visit ...thanks

@cesaralfredotrejo

3 жыл бұрын

@@ExplorerStuff sometimes it happens to me with 4-5 or 6 band resistors. But I agree, that sound more reasonable, as P=I^2*R. In a 10W charger, (10/220)A flow through the resistor. So the resistor's power would be P=(10/220)^2*260000 = 537W :) Thansk for the video! It's the best one about SMPS I've seen so far

@Harismanniyil

3 жыл бұрын

I'm looking for this comment.

@Den_Electro

Жыл бұрын

watch my video friend! kzread.info/dash/bejne/hIiLldFym6rag5c.html

Your Channel must reach 1M subscribers as soon as possible.

@Elektrotechniker

3 жыл бұрын

With an artificial voice...

Excellent, really great. I was waiting for this. Thanks for uploading such a great learning things. We wish long live for u & more video in the near future.

Very clean explications! Thank you!

I do chemistry and biology but this was explained very well and easy to digest. Thanks

@ROHITHS-lf4cl

Жыл бұрын

hiiii

Could you go more into detail and explain common charger topologies like LLC resonant half bridge or active clamp flyback converters?

I like the way you trying to explain. Its spoon feeding! Thank you!

What a video man, this man deserve more that that of a KZread Channel.

@iwdws4778

3 жыл бұрын

This man deserves TWO KZread Channels! Great Great Video! Please keep doing more

The resistor on the phase input would not be 260kohms. At that value there would be next to no input voltage to the bridge. The value is more likely to be less than one ohm.

@ExplorerStuff

3 жыл бұрын

Now that you mentioned it. Maybe the third band was gold and not yellow. So it will be 2.6 ohms. The video cannot be changed but I will mention it in the description. Thank you for noticing.

@Den_Electro

Жыл бұрын

watch my video friend! kzread.info/dash/bejne/hIiLldFym6rag5c.html

Great job. animation quality is super good and the way you tell. I have subscribe and waiting for more video. Keep it up plz.

Please keep this going.. much love from 🇱🇰 Sri Lanka

thats about the best explaination i ever heard in elctronics thank you

"and this is diode" ... ok nice to meat you diode

The resistor's value is too large to be a fusible resistor. It should be below 10 ohm

@maik5825

3 жыл бұрын

The 260k resistor limits effective current flow to

Thanks for the video, awesome animations =)

Great animation and explaination !! 🤩 Keep posting such amazing content Sir🙏🏻👍🏻

Great detailed explanation. Please review the markings on disk capacitors. I believe 102 nf indicates 10 plus 2 additional zeros or 1,000 nf value. Thanks.

@ronnueda933

2 жыл бұрын

I'll just hijack this comment to say that it is not 102nF or 1000nF. Hopefully no one has used the circuit posted. That would be quite dangerous to do so. The capacitor in between the primary and secondary should be limited in value since it can be a low impedance path from the AC line if it is too large. Touching the output side will essentially be connecting yourself with the AC line with only this capacitance in between. A 100nF capacitance with a 230V 60Hz line has 26.5kOhm of impedance and will allow up to 9mA of current (painful shock). Increase that capacitance to 1000nF and you have a maximum of 90mA (can be lethal). It also has to be a special capacitor that is safety rated because it can fail shorted if it is not, which will make the output directly connected to the line. Again, touching this output will electrocute you. Please don't play with high voltage circuits. You can kill yourself.

@westelaudio943

2 жыл бұрын

@@ronnueda933 Correct, the cap is 1nF or 1000pF, "102" means 10pF + 2 zeros. That's a common value for such interference caps. Another mistake is of course the inrush resistor value is way to high, should be 4R7 or so. Also, the secondary diode is polarized wrongly. The diode is sopposed to be *reverse* biased while the primary is energized, so a magnetic field can accumulate in the core, which, when the primary is turned off, collapses into the secondary with the diode conducting and charging the cap powering the load. This is an important detail as it sets apart the flyback transformers (with air gap in the core to hinder saturation during accumulation!) used in low power devices like USB 5V supplies like here, from other kinds of switch mode transformer set-ups.

Thank you for posting. I’ve always wondered how they have achieved this voltage reduction without generating heat. Why are some power transformers still so large ? Who invented this technology ?

@yodad4776

2 жыл бұрын

If it makes u feel any better people 200 years ago thought up and harnessed these concepts and are named after there findings ..ohm's..Faraday..volts.all these things are people names ..and we teach it all common place in school and were dumber now than then WHAT HAPPENED..nobody invented any of it just harnessed it

@westelaudio943

2 жыл бұрын

CRT televisions were among the first devices utilizing this concept, to generate the high voltage for the anode of the picture tube. Of course with step up instead of step down transformers. 1930s probably... Some power transformers are large because they are running on the low mains frequency itself... Which has some advantages like less electric (going to the load and back into mains) as well as magnetic (radiating from the transformer and wiring) high frequency noise, and better reliability. Or they are used because the load requires low voltage, low frequency AC instead of DC.

very inspiring channel, thank you!

You worked a lot on the animations for explaining.

Amazing tutorial! In the case of a microcontroller being used for the switching phase, how can I lower the mains voltage of my country 120V enough to start the chip? I have used the SG3524 to build DC to AC inverters and I would like to use it for a SMPS as the chip can generate a PWM up to 300Khz and work from 8V to 40V. Thanks for sharing the amazing video!

@ExplorerStuff

3 жыл бұрын

You can use a step-down transformer to lower the voltage to 15-20V, then pass it through a bridge rectifier and filter capacitor (1000µF/35V). Also, you can use a voltage regulator(LM7812 -> 12V/1A Out) with a capacitor (1000µF/16V) after the rectification. This would give 12V DC for Vcc of SG3524.

@guuuu666

3 жыл бұрын

@@ExplorerStuff thanx for the fast response👍🏼

@oliverbroad4433

Жыл бұрын

If you're talking about a SMPS with a controller that needs powering then some controller ICs are designed with an undervoltage lock-out and a very low standby current. The controller is started from the mains via a dropper resistor. The current charges the aux supply capacitor. When the voltage on the capacitor exceeds the starting voltage the controller comes out of standby.

@guuuu666

Жыл бұрын

@@oliverbroad4433 thanks!

Your explained input resistor at ac side before the bridge rectifier is too large in size. Such resistors are very low resistors and acts like a fuse.

@ExplorerStuff

3 жыл бұрын

It was a mistake. Its 2.6 ohm not 26 K ohm. It was a golden band and I thought its yellow.

@engineerkohat

3 жыл бұрын

@@ExplorerStuff yes sure. I realized the same.

The video is very clear. Thank you very much. It is very useful for us to continue the video. I am in Sri Lanka

The animation and explanation are really wonderful

260Kohm fuse resistor? That is insanely too large of a value! Are you sure?

@ExplorerStuff

3 жыл бұрын

Actually its 2.6 ohm. There was a gold band and I thought its yellow band. Cannot change the video, but I did mention it in description.

@kenmontero9038

3 жыл бұрын

Yep, it's 2.6 ohms acts as a fuse.. but still the explanation is 100% satisfaction🥰👍👍

This is extremely good.

Best building guide in KZread great job!!!!

Excelent explained ! Thank you !

Appreciate Your Hard Work.

Excelente video. Muy bien explicado

We know, you had to do much much hard work to make this kind of animation. Your explanation & voice also 💖💖. just excellent . keep it up👍👍

Thank you for your effort in dynamic visualizing component It is awesome work.

This is an amazing video. The visuals are very intuitive

My mobile charger earned huge respect after watching this.

Great visual technicial explanation simplified, Thanks

This is amazing! Thank you so much :)

Great explanation and animation. You deserve more subscribers.

Cool animation.

Also I couldn't follow all the way, this is the best viewable explanation of a circuit. If this would be, what I'd imagine by looking at a circuit(diagramm) than I'd say I'd understand electronics. Maybe one day...❤

Thank you! Very well explained!

I never knew a charger would work this way, thanks for the information! 12/24/2021

Amazing information. Thank you.

You took so much work to explain video. I thought after watching it I can design one. Now I realised it is not taat simple.

Very nice animation. A lot of work to do this. Thanks for sharing.

great animation, very informative, subbed

Muito obrigado por seus vídeos! Thanks a lot for yours movies!

I learned how chargers work. Amazing stuff.

Excellent tutorial. Hats off for the animations it really needs a lot of work.

@goyonman9655

3 жыл бұрын

English isn't your first language