Dangerous USB phone chargers 2
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- Опубликовано: 28 авг 2024
- Today, let's test another 6 cheap USB phone chargers. Let's see what's inside and how safe (or dangerous) they are. Some of them with schematic. Low quality or fake chargers may be quite dangerous. They can cause a fire or an electric shock and electrocution death.
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8:01: Me doing pushups alone
8:03: Me when a girl passes by
Lmao
XDDDD
lol
Keep your auxiliary winding under control!
@@thekaiser4333 im dying 😂
In my opinion the “HUAWEY”charger is 100% fake
HUAWEY more like OY VEY
True, because a real Huawei would have some Chinese surveillance devices built in 😉
It hasn't even got the (fake) CE logo on it
@Ognean Mihai -
YES , Absolutely fake , the least fake is the faked housing
@@finnerdmann8184 - What exactly is the difference of a real CE logo and a fake CE logo?
Is there a chance for a non dodgy chargers video? I would like to see some recommendations for buying one.
Only in official shop where are real certified devices You have sure.
Just buy OEM chargers, costs little more from local shop. Make sure to buy real not counteirfeit.
There were I think 2 not bad adapters in what you could call ,,last episode of dodgy adapters" so...yeah, sometimes you can actually find good ones too
ulop uiop , try an $80 Apple USB charger. Not dodgy, just awfully high price.
@@V0lk4n00 but with noname charger You know nothing (not all) before disasemble of transformer. :)
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.
same as me watching the charger videos for the first time
There's a chinese phone brand called Doogee
I wonder if their chargers are doogee
They should have just named it "Donbuy".
They probably are, don't buy chargers from sellers online, only buy them locally, because your store most likely has a system in place to check if the charger is nice or dodgy, if it is dodgy it won't be sold, but on online websites, there is no such thing, so people can simply lie and most likely, get away with it.
Love this series, there's a ton of fake chargers out there!
It seems they are ALL fakes...
Only the charger in the box your phone came in is 'reliable', even then they do dodgies...
@@Vilvaran The ones you buy directly from the web store of the phone producers (Samsung, Apple, HTC, etc.) are legit, too. And also SOME third party aftermarket charchers are good, too.
there are plenty of good options... Anker, Ugreen, Baseus, Amazon Basics also make them. @@Vilvaran
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've seen nokia's 7v. My phone even gave a message that the voltage of charger is too high.
I created a charger with 5.4v for the compensation, is it good enough?
Its should be able to hold around 4phones (8A max)
@@tirtagttech512 It all depends on cable, in this case voltage is on a bit high side, but enough for cable compensation.
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)))))))))"
nice comment
your accent is awesome
The component calculator is exactly what you would expect from DiodeGoneWild!
Beautifully conceived and thought out. Never seen anything quite like that before. Brilliant.
Oh, a new dodgy video! 😲 That's niiiiice
I was waiting for it 👀
Your cat absolutely seeks your company, so cute!
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
Nice to have you back doing tear downs and investigations, this content is what we subscribe to, good job
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.
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.
That Orico charger was what I used. I'd like to see what's inside other Chinese brands like TOPK or Baseus.
Me too! I have a powerbank from Baseus and it seems pretty nice for the price. I also have a charger from brand Soonhua, and ordered another charger from brand Fonken, hopefully they are not dodgy. The Fonken one costs about 8 euros, so it should be half decent. I've noticed that many different brands might be making/selling the exact same chargers
I heard Baseus are good. Not heard of TOPK though.
I have a Toocki 67w GAN charger I got for £9 but it doesn't seem to actually successfully output that much... or maybe it isn't playing nice with my USB tester, I've ordered a better quality Anker charger so I will test again with that one, which cost me £22.
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!
24:00 wow, there is always something to learn in your videos, very interesting point.
Youre cat is so cute ❤️
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.
I hate the blue LEDs too ;).
Lol I love how he calls the travel adapter a dodgy adapter😂😂
they are dodgy because they are a deathtrap in the wrong hands, you can easily have live pins sticking out or even connect the ground of an appliance directly into the live of the socket, making the entire casing live!
@21:30 there are 500mA 1n4148 as well as the 150mA version, might be ok.
your English is simply FANTASTIC!
24:48 Electroboom approves it
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.
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.
easiest way to tell is by the price and what brand it is if it's from a reputable company/manufacturer but you can't always tell by that because some claim being apple original or Samsung original but if the price seems too cheap to be true then it most likely is that's why also pay attention to the price it might be the biggest giveaway most of the time because good quality chargers will cost more of course :)
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.
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.
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!
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
Wonderful review. Great work uploaded. Worth watching if you get a mug of tea or coffee and watch this test tutorial.
Awesome videos :) Can we have a video home made version where we put in the more safety measures? And gives the proper ratings :D
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.
Only a puny single diode rectifier
Electroboom FULL BRİDGE RECTİFİER
"And here is the windiiiing.... Bloody hell" omg laughing so hard, you can't imagine. :D:D nice video btw.
Collectively these chargers are a waste of natural resources. Super dodgy!
and human lives too. and end up in e waste and toxicity its the story of every chines made things(if not made under any big brand)
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.
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.
Probably not completely shorted, but flowed enough corrent in the shorted point (maybe in the connector) to heat up it till it melt.
@@MrGilgameshJR, im afraid thats enough to start fire.
Ground: Connected to Live
+5V: Connected to a diode and 10W idk ohm resistor to neutral
you would need much more than just 10w resistor , it will dissipate 215 watt of heat if u want to drop a constant 5v at 1amp from 220v!
@@KuntalGhosh Super dodgy!
@@andricode its super duper dodgy!! , i want to see a cellphone usb charger with capacitor dropper!
@@KuntalGhosh should be doable with a liquid cooled resistor
@@MrGuano11 or a room heater coil.
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.
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.
Buy more of them for theese videos
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
I love your videos, they are so relaxing to watch
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.
So the conclusion is that there are no government enforced industry standards in China so cheap stuff is most likely dodgy and dangeroous.
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.
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!
Lovely fake chargers with either dodgy or super dodgy characteristics :). Nice video as always.
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!
make more comparisons between dodgy ones and good ones
HUAWEY charger had fusible resistooooor but it's still super dodgy
Oh i am going to enjoy every bit of this❤️
Another great video. I warn friends about these dodgy items and they do not believe me. Happy 2020.
Even my genuine 2014 Samsung 10w charger is about 5.4 volts, highest voltage seen and charger came with smartphone.
What about a video how to design a proper charger? That would be intresting.
We need more of these!!
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 it's original it's a very old model
believe it or not i learnt a lot about smps circuits from your videos.
1:30 the charger is also not going to work in europe, as europe has 230 +/- 10%, so 210-250VAC
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!!!
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.
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
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
Hell yea shit charger time
Can you make your own phone charger from several dodgy ones? That should be interesting.
It is too much work. And increasing the output power almost impossible,
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.
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!
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.
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
I wonder, as long as they are using through hole parts instead of SMD, why not use a point to point construction and skip the PCB altogether. Just glue or clamp the USB port to the front.
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.
Yet another brilliant video. Thank you so much.
Excellent information about cheap chargers! Thanks a lot.👌
You should take the good parts from all of the chargers and make an ultimate one.
Between all of them, there aren't any actually GOOD critical parts in any of them. Only one had any semblance of a non-murderous transformer, and that perhaps by sheer accident. The problem is you can only tell once you destructively tested it, and they just won't be identical sample to sample.
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.
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?
I think that it may have a transistor to drop the voltage, but it also may use a lossless method, switching the primary current into the auxiliary capacitor occasionally.
Your video is very informative.
When the voltage drops too much at 1A, it's not at 1A, you basically tried to draw more and as it dropped the current is only 1A because of ohm's law! Maybe if you put a 5.1ohm resistor to the port it can supply 1A!
Please make a power bank schematic....and test some original vs fake power bank and it's efficiency
10:07.. what was that you used to add the load?
@UncleTom28 Great. Thanks
A capacitive dropper based charger would be the luxury model. I would like to see one. :D
ruclips.net/video/wX5YdbyYNGk/видео.html
this has a USB and a capacitive dropper
@@TheSpotify95 Yeah, I've seen it too lol.
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.
If it is good I will use electrical tape and plug it in at a safe distance, if it doesn't explode and the device still charges, I use it but with a lot of electrical tape, yeah I'm an electrician and teach people the dangers of electricity and also the dangers of lithium ion batteries, cheap cords and cheap chargers.
Actually the only non name brand chargers I have were included with devices, every charging block I bought by itself is from a name brand like Amazon (as in branded Amazon and only the ones included with fire tablets.) Apple or Samsung and a few other name brands, also from their official website or reputable sources, I don't want a potentially dangerous fake.
How about PC and laptop power supply kindly make same video just like these chargers.
Bro please try chinese branded like ANker, Aukey, Baseus, Choetech. are they still 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.
Thanks for the videos. Cheers from France.
Great Video! Keep it up.
I know you are a hoarder, but do you actually keep those crappy chargers or do they end up in the trash?
It was intresting to test them on different voltages like is claim,i am shure that at low voltage thei don't work.
Love the video thanks.
09:28 ваш русский звучит действительно неплохо, товарищ!
у товарища множество вещей и приборов из ссср, думаю ему близок русский язык
Ага паяльник суровый советский.
@@nomars4827 паяло, конечно, просто ядерное))) китайские HAKKO? не, не слышал!
Товарищ, насколько я понимаю, из Чехии. Так что неудивительно.
It never stops counting in numbers.
Just never buy unknown charger.
Except Anker or something.
I wonder if they put the cover on backwards 1:40
You mention Japanese (nominal) 100V mains - European voltage is 230V +10% -6%. So UK mains voltage has a nominal maximum of 253V. My mains is regularly over 250V. Not one of these chargers, dodgy or superdodgy, claimed an upper limit of over 220V.
Those chargers probably won't explode at those voltages, the capacitor is 400V, and the transistor also tends to have some headroom. They're more likely to explode from overheating and developing some short circuit, or when the electrolytic capacitors fail. My country (originally 220V) had +6% -10%. But I believe that today it's all back to +10% -10%. The non-symetrical range was temporary.
Great job! Thank You.
Waiting for Orico charger video, I have one of these and works great
It turned out to be a very well made charger! Congratulazioni!
buy this dodgy charger i have to choice the big one usually have better PCB insulation and i have to rewind the transformer change the 1N4148 diode and add a fuse and buy 8KV Y cap then only can use. AFter watching so many video , i feel like the transformer is big problem.