Now some safer USB chargers 

Life's like a box of USB chargers. You never know what you're going to get.

Fun fact: the holes in the US plug are useless. The original idea was to use dimples to lock the plugs in the socket, and that design made it into the standard. The outlets with the dimples, however, haven't been used since.... I'm not even sure they were ever used. I have outlets from the 30s that don't have the dimples and the plug only came into common use in 1931.

Designers of those chargers are probably your viewers as well

A while ago I got a charger from the dollar tree here in the states to teardown. I expected a horror show but it used the same style transformer as the first one in this video and even used polymer capacitors. To me this really shows how much of a scam the 1$ chargers on ebay are if the dollar tree can manage a very well built charger for the same price

I wouldn't tear that first transformer down, either. For traditional 5V chargers, I normally buy 2 units so that I can take one apart for inspection, but when I see that it looks well-built, I don't want to destroy the transformer and then drop both units into my collection of good chargers. Insulation on the secondary is a very good sign, regardless of winding quality, and real safety caps means that the item was probably intended to meet electrical standards for a domestic retailer. This is so rare that further destruction seems sinful. Buy more and save them in a drawer somewhere before the item or seller disappears!

Spoiler: 🙂Nice. And 🙂nice.

Medical-rated power supplies have to conform to strict isolation and reliability standards for the safety of both patients and medical staff. They are generaly (in the UK at least) a bit more expensive, but worth using for projects that will be left running for long periods....in my humble opinion! (Power supply safety standard IEC 60601-1)

Hopefully he can check some of the newer GaN adapters gallium nitride rather than the silicon FET adapters. Expensive and cheap ones, I wouldn’t mind donating some once get my new bench up in new place and go though boxes in about a week, or two as still setting up equipment and sorting stuff on off days. Notice no email contact information on main page, or Patreon page? I have the GW AC source and power meter and siglent electronic load to test them and found them to be a little more efficient, but also came across fakes that they claim using GaN but using a regular FET as tore a few apart already when notice efficiency was the same if not worst then some of the standard FET adapters tested over the years. So tore apart and sure enough no GaN. Definitely would be an interesting series if he did some GaN adapters. but do love his teardowns and dissection of transformers and etc.

Always nice to follow, thank you! A SUGGESTION: Consider checking international websites and test some available at a given Year-Month YY-MM as your dodgy, so-so, or nice versions, PROVIDING the links for them. And some of them might be even sponsored IF you study a Fair Sponsor policy.

I realize that we probably do need to see some decent chargers from time to time, just so we know that they actually really exist. However, I must say that the super dodgy ones are so damn funny! Funny as in as long as it didn't burn your house down kind of way. Keep up the great work! Bring on some more extra super dodgy chargers please!

0:35 that barrel plug polarity symbol... on a USB power supply XD

Yeah more usb chargers! Thanks for the video Daniel!

I’d like to see more Super Dodgy ! please.

Would have loved to see schematic of medical supply. That will help us to study how a proper high standard medical device is made.

wait what?? No Super dodgy charger this time? Aw man :( you should take apart some more soon!

公牛/bull appears to be a domestic electrical manufacturer. Their tag line is 安全用电专家 "electrical safety experts".

Maybe they start listening to you about the safety.

I love your channel, I just have a small correction, the missing holes in the US plug doesn't make it "Chinese", those holes only help with the manufacturing and have no practical use in the socket

Nice series! Thanks

The Bull charger is not a load of bull, what a surprise!

Nice USB charger, I enjoying your videos.

I remember the days when wall adapters had iron core transformers. They had the primary and secondary on 2 separate plastic coil holders. They were probably rated for 2000 V insulation.

This is good to see. Maybe we'll see even better, safer designs in the future. Great teardown, thanks for posting!

Manufacturers have deffinitly learned it seems or have improved

No GaN charges on hand ?

Surprise! 2 OK supplies from China.

Thank you for the videos... I always wait for the funny comment where your cat is mocking you.

The Chinese plug is very similar to the Australian plug (not the US plug) but upside down - the pins are also a bit longer in the Chinese version :)

I had a cube charger and it was a good good charger...until the 13003 transistor dies..and it was a chinese charger!!

8:01 "It seems to openOWWW" XD

Do a video explaining power supply's how they work and what topology is and everything in depth or da a series on it and also what is a snubber network and things like that too I know alot but still I would love to watch them because you explain Very interesting.

Best series ever

Can you please make a detailed video about ferrite core high frequency transformer winding calculations and for toroid core too?

Yay, i love this series of you reviewing thing

Socialist Republic of Albania?. Interesting historical piece...

Why not u open original charger which comes with mobile itself

5:25 quite a first to see a black motherboard, i thought they're usually green. Does it mean differentiated operations?

I hate you when I see how easy you desolder a transformer 😤 I am a firmware guy and sometimes I have to do that. If I don't have a hw guy around to do it for me, it takes me minimum half of day, without guarantee 😂

One could apply 500V DC between primary and secondary, and run a test.

The 2.1A charger by core. I dont believe it. No way its more than an amp.

Safest Power Supply Ever!!!

Can you make a video about the ugreen 300w charger?

Lowering the noise of the air blower would have been niiiiiiiiice.

I have the same brand for my extension, which is Bull

I thought there is "BULLSHIT". Hehe

now I want the super nice rating idk why

I agree with the cat. He probably wanted to keep the charger. lol

I love your cat's comments!

Double non skippable ads is not cool

Currently, is anyone still using a 5 volt 1 amp charger? In my opinion with the current cellphone battery capacity which is mostly 5000 mah, how long does it take to charge it?

Your "hairdryer" is super dodgy :D.

Had a shit 5 volt one fail and put line v120v to 5v and damaged hdmi circuits including Epson projector hdmi ports. I only use UL approved ones from now on. Safer and not likely to damage supplied items, if the UL listing is real.

funny accent xD subbed

I have an Anker 727 GaN charger I'd love to see you prod at. It's no longer in it's plastic outlet casing with the three prong cable .. rather it is taped up with 3M Super 33+ and a Makita Battery Charger Cable for mains. Allegedly it can generate up to 100W of output power in various different PD protocols but all the same I think you'd have fun with it! I am on your patreon but unsure how to send you a donation. 😬😬

Was expecting super dodginess, got pleasantly disappointed. I like good product teardown videos too! :)

How phone knows how much amp it should draw? For simple phone and simple charger. Like if a phone is rated 10W charging what will happen if we use 5 Watt 1A charger? Will the charger keep resetting? 🤔

What is that box with albanian writing on it? Looks like something from pre democratic era. Guess it is calliper box but that is too sophisticated for comunist country.

For me you always upload at like 4:00 in the morning, so when I go to sleep late or see it the next morning It’s always such a lovely surprise :-)

😲Shocking😲 . ; )

Phewee, finally some safe USB chargers that are not electrocution houseburners!

Awesome video, next, an adaptive charger teardown would be nice 😁

Very good video

Great video, I'm glad we got a transformer disassembly!

Nice to see some nice ones 😄- those are not common among the cheap China stuff tested here

Excellent

And what about the oscilloscope?

0% Chinesium

Thank you for this. Good to see proper made chargers for once. 👍

Nice!

awsome video brother keep on keepin on

If you were to connect the shield winding to a low potential would it act as a bit of a suppression capacitor?

How did you make that "hot air gun"? Could you make a video about it?

Thanks

How to read that caliper?

That travel adapter is a death trap and would be worth a review video on its own. I bought a few of them some years back, and discovered that internally the input and the output is only held together by the pressure applied by the casing. Over time as the metal relaxes they turn into a special effects machines with flashing lights and crackling sounds coming from the inside. Definitely Syuper Dodgy.

Brilliant!

For the second one, where is the regulation if there is no optocoupler?

IMO the first one was dodgy on the basis that the line voltage pins were soldered directly to the PCB. Eventually those solder joints will probably crack from repeated insertions/removals, causing arcing.