8:01: Me doing pushups alone 8:03: Me when a girl passes by

In my opinion the “HUAWEY”charger is 100% fake

Is there a chance for a non dodgy chargers video? I would like to see some recommendations for buying one.

There's a chinese phone brand called Doogee I wonder if their chargers are doogee

Love this series, there's a ton of fake chargers out there!

5.8V under load? That's nothing. I had one that under load got to 7V! That was some crazy cable compensation, and the load was about 700mA. Crazy.

I love your videos about chargers, it can save lives! I got some dodgy ones, I disassembled as you do and I'm horrified I used them for a while. I'm now giving advice for people close to me to NOT buy those cheap chargers.

your accent is awesome

Only a puny single diode rectifier

The component calculator is exactly what you would expect from DiodeGoneWild! Beautifully conceived and thought out. Never seen anything quite like that before. Brilliant.

Nice to have you back doing tear downs and investigations, this content is what we subscribe to, good job

i'd like to have a car navigator with diode gone wild voice. "you are driving too fast. this is dodgy", "there's an accident ahead. bloody hell!", "you are driving the wrong way! the wrong way always works)))))))))"

some of those USB charging adapters are a fire hazard and or super dodgy in general and a cat Purr is cute at the end of the video

Your cat absolutely seeks your company, so cute!

Oh, a new dodgy video! 😲 That's niiiiice I was waiting for it 👀

3 blue LEDs? When even a single one is unbearable and lights the whole room at night? Wouldn't have thought that it could get that bad.

Buying a USB tester was one of my least expensive, but most useful investments. It’s incredible when you see how many USB chargers don’t even come close to their ratings. What’s even worse, are cables that can’t supply enough current. I’ve had to go through all of my chargers and throw out the ones that don’t supply the rated current. Then, I had to mark which cables are only good for data transfer, and which ones can be used for charging. If you ever have a charging problem, don’t immediately suspect your charger. Some USB cables can barely supply 0.3 amperes, even if the charger can supply much more. I really recommend getting a USB tester. They’re only about $5, and they’ll save you a lot of headaches.

24:48 Electroboom approves it

I love your videos, they are so relaxing to watch

24:00 wow, there is always something to learn in your videos, very interesting point.

Useful video. Keep on showing how them dodgy chargers are made. It's very good you give "how it should be" data for comparison. Cheers!

Thanks for all these great videos. I love watching them. About the little fuses on the PCB's - I would love to see how many Amps it would take to blow them! If you ever have the time, I think it would make a great video and could be interesting to see the tracks blow in slow motion too! Maybe the fuse won't burn but the track will come away or something else funny or interesting will happen!

Thanks! Looking forward to see if there’s a less dodgy charger in the next batch. With all these horrible chargers one would wish that there would be an easy test for consumers so that these extremely low quality (or indeed fake) chargers could be rejected. Output power is quite easy to test and that’s a start. But output ripple and above all safety is much more difficult to test for the average consumer.

We need more of these!!

Yet another brilliant video. Thank you so much.

Hi I would like to see how a modern huawei 10v 4A usb charger for their phones work? They shouldn't be dodgy so it would be nice to see what they do to make them safe and work good.

Bro please man c'mon ,I've been asking since last year ,try the warp or dash chargers they can pump out 6amps at 5v ,c'mon guys like this to make him notice

Youre cat is so cute ❤️

Thanks for the videos. Cheers from France.

So the conclusion is that there are no government enforced industry standards in China so cheap stuff is most likely dodgy and dangeroous.

Oh i am going to enjoy every bit of this❤️

Excellent information about cheap chargers! Thanks a lot.👌

My first orders from china years and years ago, was "charger #2, samsung" from your video. They were $1 a piece. Used them at work, but one time I plugged it in, top cover BLEW off. After that I'm ALWAYS using OEM chargers. Even they cost like 15-25€, but they usually come with good oem cable too! I don't want to burn my house down or potentially kill anyone.

Another great video. I warn friends about these dodgy items and they do not believe me. Happy 2020.

That Orico charger was what I used. I'd like to see what's inside other Chinese brands like TOPK or Baseus.

Great job! Thank You.

Wonderful review. Great work uploaded. Worth watching if you get a mug of tea or coffee and watch this test tutorial.

How nice, the cat was purring quite loudly at the end :). But all of those chargers were quite horrific... including those lovely chargers with no isolation :D.

Your video is very informative.

Great Video! Keep it up.

Love the video thanks.

Lol I love how he calls the travel adapter a dodgy adapter😂😂

believe it or not i learnt a lot about smps circuits from your videos.

your English is simply FANTASTIC!

@21:30 there are 500mA 1n4148 as well as the 150mA version, might be ok.

Excellent video!

hi sir. i love all your videos as I Iearn a lot from them. Would you also consider doing a tutorial on computer AVR and how it works? thank you very much!

DiodeGoneWild, you're a reference when it comes to understanding chargers, smps power supplies in general. But there's one topology you didn't touch, the transistor forward. Also, it will be interesting if you could expand and make videos on UPS repair. Particularly, how to fix a UPS that has its cpu (its microcontroller) shorted. Thank u.

When designing a switch-mode power supply for use in information technology (IT) equipment, a typical rule of thumb is to allow an 8-mm creepage distance between primary and secondary circuits, and a 4-mm distance between primary and ground. If these dimensions are allowed for during the design stage, there is a high probability (95%) that no failure will occur with respect to creepage or clearance when the final product is submitted for test.

Wonder how many of those little transformers also use CCA wire instead of copper, which is very prone to breaking down, and is difficult to solder without damaging insulation.

Collectively these chargers are a waste of natural resources. Super dodgy!

15:06 This Higher Voltage could be used for compensating long wire. My old original charger from Samsung Galaxy S4 also boost voltage when charging with more current, even to 5,45V. But i love this charger for it and im still using it bcs it is only one charger that boost it so much (without FC or QC) so charging is quicker around 3% (as i remember), i can use 2m cable without dropping voltage. 5,17V when charging, at the end of 2m usb cable. Other chargers even newer samsung original have voltage only about 5,01V with 2m cable.

Lovely fake chargers with either dodgy or super dodgy characteristics :). Nice video as always.

uiop uiop is right, DiodeGoneWild. You made so many videos on dodgy chargers. It'll be good to make at least one about the good ones.

Awesome videos :) Can we have a video home made version where we put in the more safety measures? And gives the proper ratings :D

On the board of the last charger you can see marking Keke-F5-1A. So kind of designed originally for 1A, but the case says 2.1A.

I would like to see high quality, or high efficiency chargers. To see how much stuff and fancy tech you can stuff into a small packages. Like those ic's, that look like diodes and do the same thing.. But with almost no losses :D

14:55 that charger might have a high voltage to compensate with voltage drop woth the usb port and cable! as its the same on a anker powercore powerbank

you do some extraordinary things. I would like you to show something easier without speed as the value on the circuit board measured with volmetrudaca has interruptions, then the detection of the problem or the first parts that yield to the first risk. Thanks, you're a master

It'd be fun to see the insulation breakdown voltage of these dodgy transformers tested. I suspect even the taped ones don't meet any spec.

Waiting for next dangerous chargers video 😊😊😊😊

18:22 YES! The auxiliary winding is wrapped right over the top of the secondary, meaning that the isolation distance is like 0.05 or 0.005mm only! Super dodgy!!!

What do you suggest to make these circuits more efficient or less dangerous? Such as EMI filter, snubber circuit, swap the zener for a TL431 ... what else? I would like to see a transistorized version of an SMPS without so many dangers. Thank you and congratulations for the analysis!

Sir @DiodeGoneWild - how about including an output voltage check with your charming oscilloscope? I'd like to see should there be surprises with different loads.

I just love the USB power supply mentioned at 14:28, for the following: 1) The output voltage is too high: 5.89V may damage the charging circuitry of your device 2) There is no in rush limiter or fuse/fusible resistor - "that's dodgy!". 3) The primary and secondary capacitors look too close together IMO 4) The isolation distance on the board is very suspect - about 1mm 5) Those thin wires going from one side of the board to the other do not seem fit for carrying 230-240V AC 6) The capacitor in between the primary and secondary sides (for interference suppression) is not a safety Class Y1 capacitor, it is just a standard 1kV capacitor 7) Some of the components are probably too close to each other with the boards folded over as seem before the teardown 8) The transformer. I can only say: "I smell something extremely dodgy! Let's sit down and wait for it...". What that basically means is that all 3 windings are wrapped right over each other, with an isolation distance of 0.05mm - 0.005mm only! So the conclusion is: SUPER DODGY!

Am enjoying your videos very much, thank you. I have/know basic electronics, but had never heard of a fusible resistor before. How can you differentiate between a regular resistor and a fusible one? Thanks. RichE San Diego, CA

Wow I was just watching the first one!

U should buy one of thosr chargers with no isolation in the transformer & run it with a load for long time till it melts & shorts out primary with secondary it would be cool!

"And here is the windiiiing.... Bloody hell" omg laughing so hard, you can't imagine. :D:D nice video btw.

Informative and entertaining plus the Cat..

How does the 8-pin chip of the second charger (the one without auxiliary winding on the transformer) generate its low voltage chip power? Does the chip contain a rectifier and resistive dropper, or perhaps even a small capacitive dropper? Never seen a solution like that on chip. Or does it use the 5v secondary voltage directly?

Hi Dan, we really like your videos / class, but we have difficulty understanding sometimes, I would suggest that you leave subtitles enabled as it will help a lot of people with hearing disabilities. I tell everyone that you are interested in electronics. Congratulations and thanks for sharing your knowledge.

What about a video how to design a proper charger? That would be intresting.

So, is it safe to charge my phone by plugging it into a PC 's USB port if the usb tester says 4,40V at 0.44A (with the PC turned off)?

He has another of the keke f5 charger I have been using the last 2 years with no issues in the states. If it goes out I have a backup waiting.

Just look at an old post on a web site, where somebody was writing a Declaration of Conformity DOC for a charger to sell on Amazon. They were asking what standards to put on the DOC! No one was talking about where they were going to get the device tested to the standards? it seemed they thought you just need to quote the standards and you were OK to sell in the EU. i'll be surprised if any of those transformers could meet the standards for the Low Voltage Directive just due to their size. even china i believe require a standard like the LVD for safety. So not even legal to sell in their market. looking at all the transformers you have shown none would pass any safety test as the primary winding's don't have secondary insulation covering the wire up to the point where it is clear of all other winding's and under the insulation wrapping tape nice video.

is there any way to measure or see how much interference gets pushed back into mains by these dodgy supplies?

Please make a power bank schematic....and test some original vs fake power bank and it's efficiency

You should take the good parts from all of the chargers and make an ultimate one.

Or... the chargers can ruin the phones because they often do NOT contain the protection circuitry required by the phones (read, "Apple" here, if you wish). There is a tester to find out if this chip is ruined available from IpadRehab.com.

1:30 the charger is also not going to work in europe, as europe has 230 +/- 10%, so 210-250VAC

One night I woke up to a strange noise. The phone was on the table and charging. The micro usb connector connected to the phone was almost melted and bubbled. The charger itself was extremely hot. This was the original cable and charger from Sony. The phone was not damaged. At this time, the cat stretched and rolled over without sensing danger. I am confused why the original charger did not protect against short circuit and overheated? But this case has not taught me anything and I continue to use the original cables and adapters.

HUAWEY charger had fusible resistooooor but it's still super dodgy

Waiting for Orico charger video, I have one of these and works great

10:07.. what was that you used to add the load?

You need to find a not so dodgy ones to take apart!

Can you make your own phone charger from several dodgy ones? That should be interesting.

Even my genuine 2014 Samsung 10w charger is about 5.4 volts, highest voltage seen and charger came with smartphone.

make more comparisons between dodgy ones and good ones

With looking at the first few of these chargers, they look like 1/2 Amp types. Most of the knock-off chargers are very cheaply made and are not at the listed specs.

I have a lot of ORICO chargers all over the place ! Can't wait to see the safety of them and hopefully they won't be SUPER DODGY lol

Buy more of them for theese videos

It never stops counting in numbers. Just never buy unknown charger. Except Anker or something.

A capacitive dropper based charger would be the luxury model. I would like to see one. :D

Ground: Connected to Live +5V: Connected to a diode and 10W idk ohm resistor to neutral

Hell yea shit charger time

Can you teardown some cheap qualcomm quick charger? Is it dodgy?

27:06 Huawei. That's not just your usual Chinesium, its _name brand_ Chinesium. That means that the ratings on the label wont be the usual 2X capacity, but 4X actual capacity... and a SUPER-DODGY rating. Nice!

If i buy a cheap charger i open it and look for say isolation in the windings, fuses and safety capacitors, if any one of those is missing i literally keep it open and use it as a way to tell people the dangers of electricity.

diode gone wild can u make a diy mobile charger which is super nice.