It’s funny how close some of these come to being safe. So little would need to change for the first one to be non-dodgy

i missed your cat and some doggy charger review 👍 thanks to best electronic teacher ever 🙏

I think it would be valid (even necessary), to test at the max voltage the supply outputs because the device plugged into it will negotiate the max voltage it can, it can’t read that the supply wasn’t rated for that voltage. It’s even more dangerous that the supply can negotiate a voltage it’s not rated for!

For the first charger, you should definitely have tested 12V in a long run, because what if you plug a phone that can ask for 12V? It has to still work as the phone would probably say OK to 9V if the charger couldn't give 12V. EDIT: for 18W power supplies that can work with 100V input voltage, the smoothing capacitor should be like 33uF, not just 6.8uF. You should test them at 100V in your variac to see if they start cycling when you load them significantly.

I love this series! Thank you for filming it!

Very informative! Huge thanks. Makes me realise as a former r&d lab technician this is truly scary. I will stick to originals from now! And on top you accent sounds very nice. Great video!

Hi DiodeGoneWild, Could you perhaps also measure the ripple of the output of these chargers? I think you’ll find significant differences between the chargers. I noticed that when I charge my phone with certain chargers, I can hardly use it during charging. I assume that those chargers have too much ripple but I don’t know for sure.

I think it would be worthwhile to look at the DC output with an oscilloscope. I’m currently making a video about a USB phone charger I bought off Amazon, while the output voltage stays well above the minimum voltage and it doesn’t overheat and shutdown, there’s about 2 V pk-pk on the output due to a not low enough ESR output capacitor and lack of a snubber network on the synchronous rectifier. My charger also had the same sticky yellow stuff in the plastic case, I thought it was probably lubricant from the injection molding machine, there was also some black stuff around the ejector pin marks.

Hi DiodeGoneWild, I really enjoy your your analysis technique of electronic devices... you explain things so well with reasons why parts are good or bad... I particularly enjoy your cat's comments from time to time... they actually make me laugh at times... Thanks for your very professional presentations on KZfaq.

Always great to see a new video of a guy who know a LOT about electronics, and sings when he talks. If my father hears you talks he always say is that the singing man again?

Danyk, when you will start to use a designated USB QC Trigger port on the electronic load? It will eliminate some voltage drop on the trigger. It is the one that is pointing UP!

I don’t really understand electronics I just like listening to the commentary. Well done and thanks. Cheers Stuart

I appreciate your thoroughness! Both testing and disassembly were fascinating. Were the secondary diodes silicon or Schottky?

Please make a review of an Baseus 65W GaN Charger. Would be nice to see if it is a serious charger, because it costs about 30$

16:22 Note that the large diode could have been installed so that it would have been further away from the electrolytic capacitor.🤓

Its really scary how crappy the isolation between primary and secondary is on these chargers. 3mm creepage distance is sketchy at best, considering you need ~500V/mm to arc along a creepage path, so a 2 kV spike during a lightning strike would probably jump the gap. They even put a slot in the second charger, just not where it actually mattered...

The pink transformer in the second charger is a Big Clive special.

We finally got "Origianl" again @ 1:05. When I saw it the first time in one of your older videos I really needed to laugh.

it would be nice to test the transformer on 2kv isolation tester. what do you think?

Fast charging and fast opening 🤣

That 'safety capacitor' in the first one looks like the inscriptions have been made by hand. Like, as if they were drawn by hand and then laser etched. I would suspect it is a normal 1kv non Y-rated capacitor, with some markings added to it to make it look like an actual Y class capacitor.

The board on the second one says QC2 even though the package says "Quick Charge 3.0."

I bet a megger test would punch through the lacquer of that

Experience has taught me to always avoid anything that has the word "original" written over it. 99.9% of the time the product is fake and of very bad quality.

These type of videos are old but gold!

"Al Jazira Original"? 😳 I would not even touch it and call the bomb disposal squad. 😁

nice work as always mr diode 💘😎

One of my favorite series!

Is it just me or is that molten hair dryer getting more molten every time

Love it when they even spell "Original" wrong (1:05).

Very thorough!

The transformer flew away. But it should come back since is a fly-back transformer, right?!

Have you ever considered testing these sketchy transformers on some sort of variable HV supply to see where they fail? I'm fairly certain they'll fail as everyone predicts, but I've never seen it confirmed.

The first one sure looked familiar, so I checked and it's indeed the same one as #7 from your first round-up, including the manufacture date (or at least that claimed). They even made that same mess on the USB port soldering! This would retroactively invalidate the "NICE" conclusion from then.

Thank you for making this video, I now see phone chargers in a completely different light, and probably other cheap power supplies too!

at 1:06 the word "TEGLISTRIK" -> "Tegangan Listrik" Indonesian (or Malay) word for Voltage. Also Frekuensi came from Indonesian/Malay laguage

02:24 I think the QC Trigger can be plugged in the usb port of your dc load.

Lol! I can't help it. I had a Sesame Street flashback. "1,2,3....3 turns ah ah ah!" Great video sir!

I had a lenovo phone and i am still using it's charger, it is getting a bit hot in operation but never get too hot. It works more 4 years without any problem. I am expecting to see it's internals.

With these cheap charging devices, a long-term test would be interesting ( how long they work and what kind of failure recurs )

We've seen a lot of dodgy supplies here. Do you plan to make a test of some good examples? Something what you can buy here in EU? I wonder if they will be really better.

Thank you. Good work.

You test beyond real world, my phone asks for less than your test shows.

any chance of testing oem, eg samsung, apple, or have you done that already

Where can I find a USB test load like the one you have?

I am curious if DGW had to design a safe grounded charger what features he would include. So let's say the charger will use a three prong plug, which includes ground, instead of being double insulated. What would the design look like?

@1:11 - "teg listrik" is Indonesian for "Electric Plug." apparently.

I love this video series

You can plug 9V trigger in upper USB port of load with. So no voltage drop. It just need data pins.

Cat : Your transformer flew away again ! You : Of course ! it's a Flyback !

Please make a video showing how to modify a 12V half-bridge SMPS to a variable output!. Thank you sir!

“This doesn’t start well.” I’m laughing my a&$ off.

On the backside "Origianl". 🤣

First time I've seen pink tape ! I still sit here chanting "Super Dodgy" before he says it.

Where did you get the USB Voltage and amps meter you have link ?

I have using original samsung 5v 2 amp charger but when i charging powerbank its gettin too hot is it dangerous ?

It is a pity that you do not check the voltage transients (ripple) at the output of the charger with the oscilloscope. This is probably the most important parameter.

A quick interference test with a pocket radio could be an interesting additional test.

You can plug the Quick Charge Trigger into the USB Port on the USB Load. Saves a bit on the clutter

Both transformers have only one secondary winding., so how does it supply different voltages

Ahoj, testoval jsi někdy nabíječ, který měl dobře navinutý transformátor a byl bezpečný? Nebo byly všechny dodgy. Hi, have you tested a safe charger anytime? With safely wounded transformer? Or all were dodgy?

I wonder how dodgy my Anker PSUs are. They are tiny and can supply so much power

In the first one, the lead of the diode was close to the electrolytic. In the second one the body of the diode was close to the electrolytic. The thermal problem with the second is a lot worse than the first. There was no reason why the diode in the second could not have been mounted like the first, it just needs the other lead to be left long and bent. The way the second did it was an unforced error.

In one of your old videos you already tested the algazira original chargers and they were trusted ones

Nice video, thanks :)

Hello Sir , Please let me know where we can buy USB Isolator . Thank you

That orginal charger was in a different video saying they were safe but ended up being dodgy

The first one was an origianal again. Two times this brand made a good charger. Sadly can't find these. Can anyone?

The first one's lightening symbol hardly lends itself to a confident feeling, however it does look a lot like Tannoy's original logo, which is nice!

awesome video

A čímpak to natáčíte? Máte moc pěkný obraz.

Please make some videos about different LED bulb drivers

2:03 ajajajaja, me alegraste el dia. Tome su like buen hombre!

_Now let's try to switch to 9V using this test tool..._ 😱😱😱🤣🤣🤣🤣 ok, that was MORE than unexpected

TEGLISTRIK (tengangan listrik) is indonesian mean voltage.

10:30 It would have been nice if they added a longer copper wire.

The first charger made me laught so hard😂

AMAZING SOME MORE DODGY STUFF COMING :)

The constantly accentuated sentence endings make me think it’s leading to something shocking

I like how orginal tries to copy s Samsung charger then it's not orginal

Worth it for The Hologram alone..lol

is a good idea to make a heat sink for diodes? I used aluminium paper and thermal pads for that purpose in modems using the non metallic part of the device, also

It disassembled itself. LOL

You should get an insulation resistance tester to test these things.

Don't turn it on - wait until it falls apart! (Sorry, Dave Jones)..

16:50 killed me XDD

I can SMELL the DODGYNESS

Something that confuses me in these SMPS - why do they only use ONE output diode? Doesn't that mean that half the output waveform is wasted, and hence half the power is wasted too? And then you get much more ripple on the output, requiring larger filter cap. Maybe I am missing something, but I just can't get my head around it.

Teşekkür ederiz, çok güzel bir çalışma olmuş

Copper wire or CCA, my bet is CCA, as copper is more than the cost of the device as scrap alone.

1:05, 1:10 That's Indonesian, maybe the charger is also sold in Indonesia.

Such a cool cat :)

Hi Diode, I'm interested to know how many languages you know?

Try to test cheap GaN chargers as well

shit..! i was thinking the 1st one to be safe, but the transformer has ruined everything at the end...xD

Overall, I do not understand the logic of using inexpensive insulating tapes to make transformers that are not temperature resistant if the windings overheat when using the charger at maximum current. The price difference of kapton tapes in this small amount per piece of charger is negligible.

The PSU designation in Russian is actually correct, but the font is off kilter, like they didn't know how to type Russian and resorted to doing so in Latin and shifting the letters around manually. They did mess up "vietnam" though. The "Origianl" misspelling in a Samsung oval is hilarious though.

You know it's a good charger if it says Origianl.

Super dodgy

1:11 they probably accidentaly write frequency in Indonesian Language so that is why it does looks weird, 2:04 lets test with 9 volt tester, *pulls out the cover and usb*. I would say thats top 1 safe usb charger.