"Actually, I have 9 chargers here. And my cat, of course." Brilliant content.

3:12 *Okay team, we need a solution...* *We can't afford to: 1.) include a fusible resistor in this design, 2.) pay everyone a paycheck, and 3.) stay in business. One of those has to go. Any suggestions or solutions?* .... *No one?* ... *The building janitor in the back.* *Yeah you.* *Speak up.* _...Well,..you know the radio guys 2 doors down the hall? See, sometimes, when they can't afford something they just invent components on a printed circuit board. So I'm left wondering, why can't you guys?_ *Seriously?... What? Like draw the symbol of a capacitor and it just "becomes the capacitor?"* _Actually, yeah. They do it all the time._ (long pause) *Brilliant! Get this man a lab coat! You heard him. Team, make our fusible resistor on the PCB in copper.* How? *I don't know?...(turns to the janitor)* _...just draw a resistor!_ American, European, or Japanese? _...whatever is easier for you,.. of course..._ (starts drawing) ...Americans just scribble a zigzag. ... *Looks good. Let's go with that. Nobody questions the Americans.* ... *I like this radio thing.* ... *What other tricks you got for me Jany?* _Well...._

The first charger has very creative artistically soldered transistors. Hidden feature.

I binge watched your videos so much (plus Big Clive and Louis Rossmann) that I was able to identify the problem and replace the busted NAND chip on my dad's lcd television. Thank you for your videos, Diode.

The single endedly connected wire which you encountered at 29:00 is called a faraday shield and, as you stated, aims to reduce capacitive coupling between primary and secondary. I love your high quality content (especially the schematic discussion is very nice)! It would also be interesting, to see a teardown of some laptop power supplies in a future video!

2020: What a cheap dodgy peace of crap 1920: (if taken back in time and given to Einstein or some other scientist of the time) *what a marvelous piece of engineering! This is phenomenal!*

Orico also has really cool looking USB Hubs, which also seem to not be dodgy

Thanks Orico for the donation so we don't have to see just super dodgy ones :)

25:25 OB25133. There is datasheet available if you search for OB2513x.

Small note on double auxiliaries at 29:38 this is done so that the winding occupy the whole width and have better coupling with the secondary hence more accurate output voltage

28:13 Just one tiny extra piece of tape could improve the safety of all those ‘super dodge’ chargers, improving most of them to just ‘dodgy’.

Orico is actually a halfway decent brand, I have a few of their products, mainly USB hubs and whatnot. I like them.

I've always had a good impression of Orico. Never bought any of their chargers, but I've bought some hdd/SSD caddies, some cable adapters, and a couple of PCIe USB controllers from them, and they've all been excellent. Great to see that their chargers live up to the same standard.

So the conclusion is to always buy good quality, branded power supplies and never go for the cheap looking ones - the difference between the "nice" PSU (Orico 1A) and the dodgy/super dodgy ones really is night and day. A lot of the bad PSUs can't supply the rated current for extended periods of time, if at all, and have safety issues such as the lack of a fuse, the lack of isolation on the board/inside the transformer, and the lack of a safety capacitor. The first sacrifice made is usually swapping the Class Y1 capacitor for an inferior 1kV capacitor.

Thanks for taking the time to make these videos. The core of the last transformer is an EFD type made by Magnetics Inc and some others.

31:34 - So the conclusion is... NICE 😊 (with slap 😁😂🤣)

Thanks for another good video. Yes, Orico have, in my experience anyway, usually good to very good products.

A very fine and thorough teardown as always! I ❤ your cat, I come for the excellent engineering analysis but stay for electronics cat 😀 lol.

yes i have same charger from aliexpress (ORICO), but with 2A output and it works very well, its stable and cheap

Thank you for these brilliant videos. I'm learning so much.

hello i am not an electronist man,i dont have knowlege about eletronics,but i like your videos,you explain in a interesting mode with schematics verry accurate with diferent colors,very easy tu understand,that make electronics sims to be more easy to learn with pleasure,and of course you are very funny...with Fire Extinguisher :),your cat,your dog sometime,and others funny coments that you make,i salute you with rigards

Moar danjarooz! ♥ Love your channel.

Thanks a lot for great video and schematics!

The last charger was unexpectedly good. I will wait for that optocoupler autopsy 😂🤣😁😆

ORICO makes really good products overall. A very good brand for sure.

Love ur vids and learned a lot from them, but would be really cool if you measured the inductances of such transformers!.

I think one of the reasons the voltage in these is slightly high is to compensate for shitty high resistance USB leads.

In the olden days layer isolation tape was feathered at both edges folding upwards on the bobbin. Wonder why this isn't done today anymore.

I really love your acceeeeeeeeent!

I have just finished my super duper micro programmable constant current load, and I am so happy!

The schematics are a CAT-tastrophy!! ;-) Question: Could the heat gun be shrinking the tape in the transformers causing what was "OK" isolation to become "dodgy"??

Are you making a video about the rest of the chargers soon? I'm really waiting for that. Good vs. Dangerous 12 volt car charger comparison would also be cool to see.

It is interesting, the difference of cheap fake to good chargers :D Good job @DiodeGoneWild :D

List of conclusions: 8:15 SUPER DODGY!!!💀 20:15 DODGY! 31:36 NICE 🙂

I have learnt a lot from your videos, but I would seriously watch just for your voice lol

22:34 How did you find out that the small smd component is an inductor? (Maybe when drawing the schemetic?) Tx again as always;)

Great Video.

Helpful video

Most devices won't charge under 4.7 properly, I like fully regulated chargers that maintain 5.1-5.2 v throughout rated current. The energizer brand does very well and is UL listed for safety and won't burn your house down.

I love ur video thank you for Making them

In chip mode power supplies , on time and off time and totally the frequency is easy to determine due to the datasheet of the chip , but i'll be glad if you create a video about calculating the on time and off time and inductance of primary winding of one of these discrete circuits ! And i really enjoyed the good adapter transformer 👍

Nicely done

Is the adapter in the mosquito zapper the same as the adapter for the phone charger

These are my favourite videos

I can sometimes buy (nominal) 5V 1A USB supplies here in the USA at locations of a chain store called Dollar Tree, for US$1. They seem to recharge my phone adequately but get rather warm in use. I took one apart and it looked okay (separation between primary and secondary looked good, at least, but I’m no expert) but I didn’t take apart the transformer. Maybe I can send one in...

That was genuinely interesting. I have never seen a transformer design like the last one.

Do you know LDNIO chargers? Also chinese but the one I have supports fast charging. I can always take a few pictures of the PCB if youd like to see them

Now i can add more chargers into my spreadsheet!

CAT: No mean schematics today, peasant, your viewers must behold my infinite PURRfection

When you gonna put your DIY welding inverter in the box ?

19:29 Here's my cat on the schematic😁😁 I love your cat.

Thank you I like this!👍

What can we do to heat building up i have a 4 port charger and when i charge 2-3 simultanious it really gets hot..something i can replace or do ??

14:56 _"One day I should make an autopsy of some optocoupler too"_ Yes please. I searched your videos and it doesn't look like you've done one. It would be interesting to see a comparison between cheap and quality ones.

Orico is a good brand.

The Orico USB ‘chargers’ are not available on eBay in the U.K., as apparently they are blocked because the seller is not being compliant with UK VAT rules.

What is the function of resistor in parallel to diode inside optocoupler?

I have an ASUS PA-1070-07 USB charger, which has an output voltage of 5,2V and 1,35A. Is it safe to use it with all the USB devices (which need 5V), including an LG V30?

Hm, if the second charger didn't have such a bad transformer, would it have at least been safe, even though not ideal?

aa gurman pivka se pozná, take si rad davam Zatec :)

Will you please take a look inside a normal samsung and I phone charger?.

Have you tried a water based carbon dioxied fire extingisher in a electricity based fire.I´m not sure it will work but why not try with beer-diodegonewild?

never seen a transformer like that 3rd one.. very cool.

Great video. Thanx.

In case of transformer in #3 that tick isulated wire is called triple insulated magnet wire

I’d like to see more good chargers teardown and compared to bad. Especially the transformers inside a brand name Apple and Samsung charger compared to cheap chargers

I wonder when they will accidentally or on purpose include a self destruct function

What is the purpose of the auxiliary winding?

The last one looked really well made, and no supprise it works well :-D Have you ever made one that small using your epic knowledge in switchmodes? You are a very clever man, i mean that.

The chip number for third charger , which you opened from box is N010 823133JP, Sadly I can’t find its data sheet

Ahoj, udělej prosím ten test zkratuvzdornosti.

I love to watch your charger video make more video daily 😊😊😊😊

Official phone charger review channel 😉

Finally a green conclusion 😊

Super video

Where can you buy that nice transformer?

0:07 DONNAY Damen Sports Bra ;-)

Thanks DGW for all your work! I analyzed some chargers and power supplies after seeing your videos and it can be summarized as follows: *Don't buy Chinese power supplies or chargers* unless you have opened one or someone else did or it's a very reputable brand and no brand-ripoff (e.g. like the common _Samsung_ fakes you showed on your channel). a) The biggest problem being the transformers. They are mostly all shitty. If secondary and primary/aux aren't touching it's more or less simply luck that the guy winding it was looking out of the window. The device you didn't open is most probably dangerous - Murphy. Professionally wound transformers can be easily identified by massive amounts of tape much wider than the core. b) the isolation distance d) the decoupling cap which is not safety rated.

扁平欧规充电器蓝色 又是深圳特产，我很好奇你那里买来的这些东西，现在中国国内都很少见这种东西了。

I realized at 8:53 it might had a higher voltage to compensate for the resistance on the cable and usb port

Nice video ☺️

P.S. YES MAKE SOME AUTOPSIES OF OCTO-COUPLER'S PLEASE!! That Would Be Great To See, No One Ever Really Takes Them apart!!! : )

I have one of those Phone chargers you show us in a thumbnail. The slim one. Its bad doesnt charge the Phone fast

It's the best to use the original charger for you device. Some manufacturers even include fast charging chargers, for example Motorola

I have several Orico product, they are cheap, but as far as their performance goes, they are as good as the more expensive Aukey. Now that I know they also have a good standard for safety, I have no more reason to not stick with the brand.

6:50 "here is my cat, of course"

What a convenient way to buy some diodes. Too bad they have to be harvested from shoddy USB phone chargers. Dang, that ORICO is smexy, though. I should get one. I like to charge my phone at 1 amp.

26:53 This core is an EFD core.

very good!

Nice happy ending!

@ 20:16, I love the voice : Dodgyee 😀😀😀

I'm amused by how much your cat likes you.

the tiered eneenier is on the case meeow :))

The marking on this chip is OB25133JP

That switcher IC is most probably this (read the applications in the Darasheet): ac-dc.power.com/sites/default/files/product-docs/linkswitch-3_family_datasheet.pdf?download=1

Nice video. One question from electronic laic: Why theres almost no USB chargers with 3rd (grounding) bolt? Would it be harmful to devices or dangerous?

Please teardown hi-link product 2ampere

Konečně i nějaký solidní kousek po všech těch Čínských s*ačkách, ale obávám se, že takový teď zase hodně dlouho neuvidíš.

These colored chargers like the blue one regularly burn out making a short circuit in the network

31:37 So, the conclusion is... clap .... NAAAAICEEE 🙂