Can we all take a moment to appreciate the work this man is doing to educate and entertain us. Man thank you very much.

this black charger deserves a new category, it earned the trophy for the worst charger ever tested. Judging by it, I assume it's safer to insert a fork into the wall outlet rather than using this charger, because the fork will quickly trigger the breaker, and this charger will quickly destroy your smartphone or other load it's powering.

The black one deserves a whole new dodgindess level. Super dodgy chargers we've seen yet never came close to being as bad as this one.

man I love that first psu. its been ages since I saw something so bad, where everything is wrong. death transformer, under-rated components, design/manufacturing errors, its has everything you could wish for in a super dodgy power supply. I particularly enjoyed the 2.5V cap and the 1N4148 on the secondary side.

The voltage rating of the output capacitor is 2.5V, very likely a polymer capacitor recycled from some old PC motherboard. The current drawn by it due to the overvoltage, might also be another reason of the super low output current.

Good to see the return of a "super dodgy" charger. Were you tempted to reverse the polarity of the capacitor and retest? Great use of completely disproportionate force with the wrench btw

That black is quite impressive in a bad way of how many things are done wrong. I have many bad chargers , but this is on another level.

With the super dodgy charger they really didn't care at all, they didn't put ANY insulation in the transformer. This is even more extreme than in the other super dodgy chargers, where they had some insulation between the primary and auxiliary. Great video and thanks for showing us the dodgyest possible transformer yet.

Hmm, the black one seams to be the most dogy charger so far... A bit surprised why the caps did not explode - usually they blow up so quickly with wrong polarity or double voltage...

That special secondary wire is called "triple insulated" and AFAIK it's the only way to safely wind a SMPS transformer with such a small core where margin tape would use up the whole window.

This is the best analysis I have seen on KZfaq. Love it. Thanks !! Highly appreciated by fellow engineer who appreciates all the details.

Wonder how much current the black one would have delivered with the Capacitor placed in the right polarity

I once got a bag of those 2.5V capacitors at a hamfest for free. Didn't know that that voltage rating existed and I was sure they were 25V. It didn't end well. I used about ten of them in a headphone amplifier project and they blew up instantly like firecrackers when I powered the amp up for the first time. Nooooice! The bad thing was that two super expensive ($40) Opamps and some quite rare hitachi transistors got destroyed in that fireworks show ;-(

You must add new dodginess level - Extra super dodgy 🤣

Great video as always! So refreshing to see a properly built, quality power supply.

Really loves the “Mobile Chargers” episodes, they are always interesting!! :)

I seen a charger in the Shell gas station store, that said 50-60 GHz instead of 50-60 Hz. I didn't buyed it, because i was thinking it can be a fake one, and it would be a waste of money. Luckily i didn't buyed it.

My dyslexic brain saw the XT008 marking on the black one and "translated" it into "bollox" which is English for "super dodgy".

Superb video, in fact all your videos are superb! I like this one particularly as I’m always telling people to be careful not to buy fake / cheap chargers; it’s so tempting when you see the difference in cost, but when you consider the output could potentially damage your expensive device, or worse still start a fire in your home, it’s just not worth it! Thank you for your time, hard work and for sharing your knowledge and experience.

That's great analysis and I like your style. Havin a basic idea of electricity and electronics and havin ordered in the aps some batches of China chargers, I started to dismantle two of mine, checking for the main issues: Fuse, PCB distance, Y1 capacitor, capacitor sizes and transformer isolation. One was dodgy, the other super dodgy...

It's almost as if someone decided to make ALL the mistakes when designing this charger. Just makes me glad I always keep old chargers from phones I no longer use. It amazes me people will spend £800 on a phone then buy the cheapest charger off AliExpress or eBay to charge it.

What is surprising is quite how well made the good one is, although the bad one must be the worse one yet. Those tiny transformers in the dodgy one can never really be safe, sometimes the insulation may be acceptable, but it is so variable and dependant on care of construction.

Would it be possible to add a high voltage insulation test to your review procedure before the teardown? It would be nice to see if some of them even mantain isolation at 500v.

Why does this man talk like that? Transistoooorrrr, Dioooode, Capacitoooorrr!!😃

that's third language is meant to be Indonesian language, it says "Teg Listrik" which is Teg is called Voltage and Listrik is called Electricity in English, so "Teg Listrik" is Electricity Voltage in Indonesian language

That smoothing cap breaks the "no touching" zone since it's got line voltage in it and it spans the gap! It can physically touch the leg of that diode, too

pcb "poistka", prepolovany kondenzator na primarnej strane, prehodene diody, nebezpecny transformator, poddimenzovany vystupny kondenzator a extremne nizky vystupny prud. Velmi nebezpecna kombinacia urazu elektrickym prudom alebo vzniku poziaru. Skoda ze nevidime castejsie "NICE" adaptery, aj ked chapem ze ak ich niekto neposle na test, tak sa natocit video neda. Pekna praca, vdaka.

Subscribed! because I like the way you speak and I learn a lot! greetings from colombia!

very interesting series ! thanks for teaching me so many things

Cool to see both ends of the scale on this video!

I have white samsung charger too, from 2015 but it has usb port. Came with Galaxy S6 edge, im curious how many years can they last. I've used this charger basically everyday since i got it.

thats the best transformer iv seen in a very long time on your channel..

Thanks for the video, excellent break down and explanation complete with the math to prove it. Subscribed!

Very nice review. A pleasure to watch. Thank you!

The other language is Bahasa. Found your channel when I was searching for 18650 DIY powerbank informations. Love your videos. Very informative and entertaining.

Noooiice video, as always! Keep up the great work!

Your fire extinguisher almost made me spit out my coffee.

"I was lazy to wait....". Story of my life

The video is very interesting, and your accent is wonderful!

Brother very educational and informative. I feel like I’m back in electronical school. Thank you 🙏🏻 I definitely subbed and thumbed up Paid S.

There is nothing to worry about. After designing this abomination, the designer and the seller sat down to a nice meal of an endangered species animal for good luck. We are protected.

He sounds like chills.

the third language "teg listrik" (tegangan listrik = electric tension, ie voltage) and "frekuensi" is Indonesian

Man... is this your real accent?? I enjoyed a lot.. subscribed 🤣

I've been watching this channel for several years and I think it's the first time I see a charger being rated as "nice" lol...

That's a wonderful comparison. Everyone involved with the production of that black charger should be ashamed of themselves. I hope they realize the karmic cost of what they have perpetrated.

Cam you buy and test some Huawei chargers?

Rather than a fire extinguisher, you should wear a copper hat like I do, connected to a cold water pipe or good ground. This aids in trouble shooting and reverse engineering live circuits and is the primary reason I have no hair 😁😁😁👍👍👍

i like watching your videos for education and help and useful guides to learn from

why didn't you solder capp the right way, I'm interested to see what the output will be

Ah, the "fire extinguisher" absolutely made my day... Can't wait to finish work so I can join the firefighting myself. Cooling a bunch of extinguishers in the fridge already....

A very good episode.

Very good idea to test, and maybe teardown an oscilloscope probe! (be sure to strip down the cable too)

Please make a video showing how you draw the schematics thanks

I like the moment when you say SUPER DODGY, DODGY, NICE!

Nice separation (on the board NOT in the transformer) and otherwise a miracle that it even works. 😁

At least those don't have a Samsung logo so it's easy to recognize them, because there are other fake ones with the small Samsung logo printed on the side but not engraved on the top cap, I got one a few years ago as a _gift_ with a second hand genuine Samsung S7 and its genuine Samsung fast charger at an eBay auction, it had a modern style PCB with SMD components but the safety capacitor wasn't a safety capacitor at all, so I didn't look at anything else and put it away to take it to the electronics recycling bin available at my nearest supermarket.

Take a look at more dubious and non/dubious powerbanks, people will be undoubtedly trying to get some emergency power for their phones if the situation gets even worse

These chargers are getting worse and worse. I'm amazed that the capacitor didn't blow up being connected in reverse. This style of chargers is identical to my smart watch charger which also supplies 0.7 A (tested and it cuts out at .85 A). What's more interesting is that the watch wireless charger is also rated for 0.7 A but it never draws more than 300 mA, usually around 230-250.

give dodgy awards at the end of every month

My wife has a bad habit of coming home with dodgy iphone chargers that she borrowed from coworkers. Resulted in at least one dead phone. Now I just check their weight to see if they're too light or tap the plastic to listen for a hollow "cheap" sound and toss offenders directly in the trash.

While half of me feels like you stop counting out loud and unwrap the transformer quickly and slow back down to count out the total at the end, the other half of me imagines you continuing to count all 100+ turns at the same rhythm and bathing in the zen of it.

It's worth mentioning that the black one contains the "China Export" logo instead of the very similar "Conformité Européenne" marking which you can find on the white/Samsung one :)

Problem is - these dodgy PSUs are sold all over the place. Only really feel safe using the one that came with the phone - oh, wait, Apple stopped doing that didn't they !

Wonderful video. Thank you!

Just when you think the dodginess can't get worse...

You have a special style of explaining very transparently what you discover when you do reverse engineering.. :) I always have pleasant surprises in the sense that I realize I don't know them all.. In this case the anti-interference winding. 10 Q ! Somehow I will manage to pay you for many little things ! ;)

Thank you for the video. Your gray cat is beatiful 9:45

Cat 😺 rules 👍 Extremely cool, as expected 🤓

Just compare the transformers, how much care went into the proper one. Man the dodgy one is super bad. Haven’t seen such a contraption in a while. Keep up this content :-) And like for the cat

I had an ESP8266 on such a black charger as a power supply. The power supply had severe voltage drops. Even if a 3.3 volt voltage regulator comes afterwards.

Thanks for your sharing

You must create a new category called "Dodgiest" and throw this fake one on that category.

I need this soldering gun where can get ?

Super dodgy!! 🤣 Classic dgw 😎👍

😂😂😂 the cat in the middle of video 🤣😅

Great video, lovely cat 👍

If I wouldn't forced back on the display of dislikes , I couldn't belive that anyone gives a dislike (actually 2017 likes vs. 45 dislikes) for this good video (your videos are usually good) ...

Very old chargers, most of them never used today. Find modern ones, cheap with QC protocols and disassemble them. Cheers

Magnífic job,my congratulations, best video.

You sound so funny, but your explanation is totally excellent! Are you Hindi from India?

Im.looking for an adaptive fast charger circuit for samsung smartphone. Im need makink a solar charger faster.

The 2.5V capacitor probably relies on the fact that the voltage could drop below 2.5V while "charging" a phone! That capacitor soldered the wrong way around could be why it can only supply such a small current! Damn! I have already seen no insulation between auxiliary and secondary, but never absolutely no insulation at all! This is by far the most dodgy charger I have ever seen! It deserves an EXTREMELY DODGY as conclusion! I also noticed in the first episode of dangerous chargers, you said "let's sum it up" for the second charger, saying it had all the problems of the previous one but it was wrong. It was the only time you made a such conclusion, and looks like now you are doing it all the time! Kinda funny!

Um, only single diode.. what is those transformers secondary voltage...

Dobrý den, můžu se zeptat, vy pracujete jako letecký dispečer, nebo jste pilot? Nemám-li pravdu? :D

Would fixing the inverted capacitor increase the output current? I assume fixing the 2.5v one wouldn't help much with that though

can you make a video about UHF microphone and draw it shematic sir

11:43 Yes!!! That's a fantastic transformer, the best type of transformer that money can buy! We haven't seen this since "dangerous USB phone chargers 3"! Fantastic, it's made a comeback! edit: It's even better, there's no isolation whatsoever between ANY of the windings! This hasn't been seen before on this channel! You're isolated just by the thin lacquer on the wire, which is super small, super thin, and is not designed to be the only isolation between mains and humans! Super dodgy!

dude, awesome dialect :D aand educational video also

Hmm thank you for making a video about this and i like your accent

Nice video 👏

Brilliant!

Thanks

SUPER DODGY 😂

Idk but I feel like I'm in church they alwaaayyyyyys sayyy aaameeeeeeeeennnnnnnnnn very long.. Idk it's annoying altho not his fault or anything but it is killing me, dude is smart but that hoooooollllee kills

How to donate?

The conclusion iiiis: 13:25 👎& 19:03 👍Thanks Dany and stay healthy 🤗

Very interesting video! 😁

Great video so far but damn, the force used at 3:19 ... Felt extremely personal

The best and worst power supplies so far.