Dangerous USB phone chargers
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- เผยแพร่เมื่อ 23 ก.ย. 2019
- Today, let's examine some USB chargers. Most of them are generic (read: fake). Such chargers may be quite dodgy. They can cause a fire or an electric shock and electrocution death. But there are also some good ones. I've accumulated a lot of those chargers, so I decided to put multiple of them in one video.
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"I don't want to scare people, but sometimes it's better to be scared than dead"
AHAHAHAH, YOU ARE THE NUMER ONE !!!
Especially at 3:16 ... the fuse is actually the device you're connecting to this doggy charger.... it's very "Dangeruuuus!" lol
NUMER ONE !!!
I love how your cat interrupts you sometimes
😃 my feline fellows
Ginger Kitty Project
This isn’t related to the comment but I love ginger kitties too! I have one named Todd.
Cannot beat a good pussy!
>;o)
The old ones are the best!
I think he is recording on his cat bed
@@mrkitty777 Greetings.
4:17 :D love that "dodgy or not" Format, your conclution is very funny :D
old diodegonewild style. yay:)
back to 80s?
so..... he need more *SALT?*
@@hyzadhanafi7419 even more salt
Expression is super: 07:20 "Bloddy hell! You must be kidding me guys!"
Wild idea: What if you made transparent cases standard for these, so that we could see inside without having to disassemble them? (Provided the label is placed where it won't hide anything critical.) Of course this wouldn't tell anything to people without the electrical knowledge, and some flaws would remain hidden, but I suppose it'd be something… (In Australia, many rewireable mains plugs have transparent covers, so that correct polarity can be verified without disassembly.)
This would be a very good idea!
And this is why I use my $0.99 charger on a $500 isolation transformer.
Lol 😂
Still a good house burner
Excellent.
However - yours is just an isolated case
I so much enjoy your videos. Thank you for taking the time to make content for us to watch!
Also his videos are very educational and he is making us careful about safety.
@@FaysalKhalashi yeah!
I have added the word Dodgy to my vocabulary.
I love how we are now relieved and satisfied to see a layer of sticky tape between primary and secondary in a smps transformer :D
in an old linear transformer supply the two windings would be completely separate but now a piece of tape means yep, they went the extra mile for our safety
For high frequency transformers the kind of physical isolation you mention is not an option. All international standards that I know of accept 3 layers of tape (not ordinary stcky tape) as a suitable barrier "through insulation" but they also require a clear creepage distance between primary and secondary of at least 6.4mm or 8.0mm for the German standards. The same creepage distance that applies on the PCB between primary and secondary circuits.
While this video found some better power supplies I don't think he found even one that actually meets safety requirements. It is a sad thing when all you can hope for is a thing less crappy than the alternatives. ;-)
@@smbd2010 টঁধঁ
ঠ
lol yeah
I love the (super dodgy !!! ☠) decal,
you can make shirts of this, and
make some money.
i would buy merch from him....
@@pdavidp4563 what you mean? I WILL buy it! Not Would
BTW: The black Samsung charger is definitely a FAKE. The model number is EPTA10EWE. The W stands for white. AND THE POWER SUPPLY IS BLACK.
I would buy a shirt
7:19 Fantastic, it's a transformer with absolutely no isolation! The lacquer on the wires is only 0.05 mm thick at best, which is not meant for isolating the mains.
I think the charger labeled "Origianl" is a near clone using compatible chips.
Yes, that is a clone, it would have probably been a Samsung that they just copied and called it Origianl :p
I love how the Origianl one proved to be actually nice while the nice looking ones were dodgy :)))
So true. BTW: The black Samsung charger is definitely a FAKE. The model number is epta10eWe. The W stands for white. AND THE POWER SUPPLY IS BLACK
A long time ago, I bought a cheap (4$) charger that is supposedly a Quickcharge one, has two USB 3.0 outputs. I had more expensive chargers that got "tired" in less than half a year but this one just keeps on going..
Thank you very much for this video which I am sure will save lives! Thank you for all these videos you make, I appreciate them and I follow you very regularly! Continue like this. Thank you !
Excellent video, well done and good explanation. Professionally I have designed a number of off line SMPS and looked into a few chargers as you have done and I was horrified by what I found. Thank you for making the video and for helping make this issue public knowledge.
Great video as always; it's always fun to see inside some of those sketchy cheap USB power supplies.
Your adorable cat is like the icing on the cake; it makes a good video truly great!
I had a counterfeit Samsung charger which said "Made in Vietnam Сделано в Китае"
Translation: Made in China
your videos on safety are actually very educational, well done and thank you.
I've seen some of these knockoff iPhone chargers in a local shop and they were dirt cheap. Told my friend that was with me to watch out for fake ones because they are deadly.
Thank You for Your warning and explanation!
Can I have a DODGY shirt? Or DODGY ringtone even with your original voice?
@Alex Tarasov dodgy stickers? You mean with phenol? 😂
I love the afterword. Thank you for the awareness spreading.
Phenomenal video. Great job once again. Too bad non tech folks will not watch this.
Great video! I posted a few videos on a USB charger that I bought years ago which used just a single TO-92 transistor with no optocoupler or even a primary-to-secondary interference suppression cap. It also only used a half-wave rectifier. The voltage regulation was not great (4.5V under load, 5.8V no-load), but not as bad as one might think. The downside of it was the output current, as it could only supply about 300mA max.
Great video! Lots of useful information. Chargers are usually easy to open and a quick look can save a life. Thank you!
My main takeaway here is, non-IC power supplies can supply up to 800mA. Any more and you need the chip.
Also, the board in that 9V/500mA looks like a repurposed USB circuit. Even has a place for the USB port.
This doesn't have to be a rule. I have seen old power supplies in CRT monitors, they were about 50W and still made of just 2 or 3 transistors, no chip.
A lot of switching power supplies are repurposed. It's easier to reuse an existing design and board layout and just change few capacitors, resistive divider and number of turns of the secondary winding.
@@DiodeGoneWild True. I should have clarified. I meant specifically with these cheap USB power supplies. You can always beef up the non-IC design with more power transistors, but there's only so much room you have in a tiny USB charger case. :)
I only use my dodgy chargers on 120V so I'm twice as safe. LOL. Very informative post. Thanx.
i dont think 120V is any better xD
120 V is not safe. Americans think it is and there are horrible number of deaths as a result.
There is no interference filter, no inrush resistor, no proper fuse. There just a diode, which is gone wild. That's nice!
I don't know what it is, but there's just something about your Czech accent…
dodgy!
Czech or Indian ?
@@MrSamsyria Czech, he's not Indian lmao
It just triggers me ah
in first 10 seconds I thought it was intentional...
I absolutely love any video of yours with the word "dangerous" in it's tiltle. It's a guarantee the video will be intresting. Keep up your great work!
The way he said: "Nice" is really nice... 😍😍😍
Thankyou for uploading videos again i really love all your videos
Very beautiful cat! I am so addicted to your channel and always hope to see your cat and maybe learn something.
The dodgiest ones: *Made In China intensifies*
not all of the ones made in china are dodgy, some are.
@@jort93z Correct!
Agustinus Reynaldi example even oem legit chargers are made in china
@@jort93z Not all of them are dodgy but most of them are really super zuper dodgy, easily broken by itself, and don't care about user safety. Assembling is different with producing. But both of them are labelled Made In fucking China.
Most (if not all) chargers "dodgy" or not are made in China.
Another excellent video, thank you Diode 👍👏😀
Dodgy ones all seem to have either dry joints right off, or poor joins that will be dry very soon, along with them all using the solder joints to be mechanical holding for the sockets.
This is an important video. I have disassembled several chargers bought at local local stores and every one of them was unsafe. In addition to shock risk they can start fires. These things are everywhere and often left plugged in all the time. We need to spread the word.
For two of the chargers, you say that they are nice without checking the isolation of the transformer...
Because he wants to use them after teardown?
I never buy USB chargers off the internet. I never buy mains powered appliances off the internet. In fact, I only use chargers that come from reliable name brand stores and show UL labels. Problem avoided. (Apple and IKEA are good, not cheap, but what is your life worth.)
@si Markeyan Not so. I bought two chargers from IKEA, and took one apart. It was of very high quality, not like the internet cheapies. Apple chargers are the best; buy directly from an Apple store and you will not get a counterfeit.
I'm wonder if those charges are cause of fire, here in the US because a lot of houses use carpets. Thanks for all your videos, I really learn from you.
Always waiting for your videosss. Nice😀
Thank you for this video!
My accent is totally gone after this video. I can taaalk veeery veeery straangee noow.
perfect video as always . really love your ckear videos and i hope your warnings come across.
Great video, thank you.
Wow, you're like a musical Big Clive. Awesome! :D
I have a test probe like you showed at the end of the video, which I bought from a "discount shop" for about $2. I only use it to test for "mains voltage present", by holding the tip near an insulated wire I suspect is live. I never trusted it to actually touch live wires, it is supposed to be able to show voltages. It has an LCD which works but no internal battery. A range of resistors are connected from the tip to the LCD. There are two "touch" points, which I think work in some way by "capacitance". I look forward to your opinions on this tool.
PS - The tip looks like a screwdriver, but mine doesn't look strong enough to use in any serious way.
Chargers you can buy: Aukey's Quick Charge enabled chargers, Hama chargers (Germany or close proximity), FRIWO, and of course the original ones from your phone or device manufacturer.
Charger at 25:52 is for a NiCD batteries in old school RC cars. I had a connector like that on the RC car battery in the 90s.
I like this episode!
I wish most of your videos where this long with this many items! :-)
Have you ever considered getting an adjustable constant current USB load? I recently got one on amazon for like $13 and have gotten a lot of good use out of it
Really nice vid about safety and electronics! Thanks a lot for investigation.
A very informative video. Thank you
Love your cats way of thinking.
I like this it helps keep me safe in general
Can you review Blitzwoolf chargers made by Banggood or Xiaomi? Because i have a lot of them but seems to be solid chargers!
thanks for dicussing the seriousness of this
Thank you. Very informative video.
0:06 what a way to start a video!😂😂
EXCELLENT VIDEO. I have got a few small shocks of these kind of power supplies. I measures 80v between earth and the USB socket. Seems to be common on many of these PSU's. Something to do with the interference capacitors they use. Maybe you could see if this is right
NO EXPLOSION!!! LOVE IT :-) Thanks
That red one looks like the supply pins would pierce the insulation on the capacitors if you just squeezed it.
Very good man,Thanks.
4:37 it's fit in to the reversible european plug which has the ground at the top and bottom of the plug.
there's is no oem samsung charger in this video, but counterpart of samsung adaptive charger at near end of the video is very nice, the different maybe just no load power consumption, on oem is very efficient.
BEST video on this channel!
Your magnetic screwdriver holder seems to magnetize screwdrivers. A tiny piece of metal in the first supply is just wanting to drop somewhere to short something.
I tend to inspect all chinese supplies or mains equipment. There are good ones too but the cheapest ones are usually dodgy or pure dangerous. If cannot inspect them yourself, it is safer to stick with reputable distibutors and reputable products.
Making those tiny transformers is a pain. At one time I needed small transformers and keeping the insulation distance and getting it tiny at the same time is not too easy. I used 2mm gap (ie. 4mm in total for creeping around the insulation) and extra insulation for wires coming from the side. All that makes the transformer quite a bit larger quickly. Smaller gap and potting is probably the only way to way if you really need them tiny.
Just want to say, these safety points are important. A lightning strike near my home sent a voltage spike into my home into my usb charger, down through the usb cable, into my cell phone, and into my hands giving me a zap that felt like I touched mains line momentarily.
I was lucky that it wasn't worse, and arguably, I shouldn't have handled anything plugged in during a lightning storm. Maybe I put too much trust into suge suppressors. The phone survived but the charger was litterally smoked. I didn't do autopsy but suspect that a narrow isolation gap contributed to sending mains voltage down the USB cable.
This reminds me that I have one charger that is not original, my notebook "dell" charger. Will surely open it and take a peek to see if it is safe!
Mauro Sans just measure the output voltage. The original one is always had stable voltage and had voltage tolerance +_ 1%
As always it's a good video keep it 👍
I Think You should make this into a series. For example people send You couple things to review , You see how it looks and works, then Deicide - dodgy or not. You could throw in some explaining as well, just to let us know how it actually should work.
I used to plug in $3 5v
2a adaptor for my decorative lights for almost 2 full months in my dorm.
thankyou so much.......love your videos....
The second one is the exact shape of a type A (North America and some other countries) plug. They just put the European pin spacing on it.
Hey diodegonewild. I had a very intresting time with a 12 v smps supply..it always shocked the hell out of me when touching the case...
So I opened it and it was grounded properly.. After that I run it without the top part of the aluminum extrusion case and no shocks when touching.. So I removed the paint and added a second ground to the top plate and problem was gone.
But how the hell can this topplate go live when there was no connection to anything (not to ground ether :D) can't understand that
Good job. keep it up. Thanks a lot.
Keep doing these phone chargers videos.
Confirmed. The communication charger is using the Qualcomm Quick Charge. I searched for the datasheet. It gave me a page of chargers and devices supported.
It is version 2.0 quick charge.
A good info packed 33 minutes well diodegonewild
Original phone charger is safest. Thx for an entertaining video.
Is there any difference in usb charging cables. Good vs bad or are they the same as long as polarity is correct
You can upgrade the first by adding a fuse and as it has a ground pin connect it to output negative!
Safety regulation- 'Diodegonewild verified dodgy' 😂
I have made a couple of analogue old school chargers. Using a REAL mains transformer split bobbin. 100% isolated and earthed. Followed by a 5 volt regulator and good smoothing. You probably could use this in your bath (not recommended however!!) Not as portable as some but at least I will probably live to tell the tail.
What exactly determines how many Amps a charger has?
The thickness of the transformer windings wire or the amount of turns or what ... ?
With so many rules and regulations on most of the objects in our daily life, it amazes me that so much deadly stuff is allowed to be sold in the UK
If YOU import items into the country it is YOU who are responsible. It is not practical for anyone else to open the millions of packages that arrive every month, examine the contents, and conduct electrical inspections and tests. Unless of course you want ALL private imports to be banned.
It is not permitted for retail shops, mail order companies, or other suppliers in the U.K. to supply any electrical item that does not meet the U.K. electrical safety requirements. It is a similar situation in other other first world countries.
@@Mark1024MAK thanks for the reply. I've purchased off eBay and the product started to smoke so I was lucky to be on hand to turn it off. I had my money refunded but I don't think they'd pay for a new house. The C E mark is not a safety mark only China export I found out. Certainly buyers beware.
Jeff Cole - Fake products and unauthorised look alike products often are marked with or described by lies, misleading descriptions and copied trade marks, copied certification marks and similar. All of which are meaningless and are only there to help make the items look good.
Jeff Cole - just to see how bad some power supply units / adaptors / chargers were, I bought some from eBay some years back. I deliberately went for some of the cheapest. All with pins suitable for the standard U.K. three pin sockets. And all being sold on eBay.co.uk in our currency (£’s).
Construction quality inside the units was terrible. Just like some of the units in Diode’s video, there were multiple problems. Poor quality components. Inconsistent values of the capacitors - from the same seller, the lower power unit had higher capacity capacitors than the higher power unit! Either the Y class safety capacitor was completely missing, or it was a normal non-safety capacitor. Cheap PCB. Mains wires that could touch the low voltage output circuitry if they came loose from the solder pads on the PCB. Nowhere near the minimum required isolation clearance between mains voltage circuits and the low voltage output circuitry. No fuse, no inrush limiting resistor and no interference filter components. Poor quality transformer. Case screws that were so small that one knock and the cover could come off. Basically, they had been made as cheaply as possible.
Fun fact it's not allowed. But somehow nobody stops the guys who sell these here locally. These dodgy charcheres can be ordered via Alibaba directly from China in packages of 50 or 100 units, for less than 1 $ per unit. So it's probably relatively fast money to sell them for 10 to 15 £/€ per unit on Ebay or Amazon Marketplace.
You forgot to mention the earth pin on the UK style adapter isn't actually connected to anything, and would pose a major shock hazard as it was made of metal. They should have just molded the earth pin as part of the case.
That would not help much. What would be better is if the 5v output is connected to earth.
@9:30 Are you sure that's a fuse? That looks a lot like a Xenon light to me; meant to provide overvoltage protection without blowing. If I'm right, if the voltage is too high, the light will conduct and shunt the current to ground. With this use, the light it emits is irrelevant; the voltage drop and current it dissipates is what's important. I can't see into the tube very well, but if it's a light, then it will have two elements inside that are not physically touching. It would conduct only when the gas turns to plasma.
Would an inrush resistor really be needed considering that these chargers have such super tiny smoothing capacitors?
I'm new to resistors and what not but know enough to be dangerous, is there a way to make one like the first one (output .80 mah) and make it output 1.5 or 2a?
About changing the sms resistors with through hole ones
Just two decent ones out of that lot.
The lack of winding isolation frightens me more than the flash over gap.
if i had to use a dodgy one i would connect the phone to the charger and BEFORE pluging it in to the wall socket turn the socket off.
Then turn the socket on, no touching anything else.
When charged turn the socket off.
I'm sorry but you are not going to get ridd of me, that's a threat :)
Certain people hate cheap multimeters due to lack of protection, i have never had even one explode or kill me, i think lol.
Yes, I also wonder how they can make the transformers like this and have a good sleep. They are probably hand made by very cheap uneducated workers (maybe seamstresses?) who just loosely follow some instructions and don't even know that electricity flow through those "strings". When I have to use my phone on a charger, I stay away from anything grounded. I use a good charger, but I do this subconsciously.
Can you take apart a dash charger sometime? I really wonder what is inside it. Especially cause it can supply 4A
The small one had the right european connector, your plug is just a one mostly used in Swiss
The plug he has from what I seen when traveling used in Slovakia and Czech republic
Actually Swiss have completely different. That is the French socket which is used also in Belgium, Poland, Czechia, and Slovakia so it is used by 133 million people. I think it also is used in Kongo. It is compatible width all modern European plugs that also work on Schuko.
Essentially those are Neighbors of Germany and they did not want a German socket.
Nice cat
Thank youuuuuuuu for the videoooooo, veryyyyyyyyy informativeeeeee.
Hi, could you please provide link for the “Safe” chargers? I want to buy the safe adapter. Thanks
I love this fan base
Excellent very good Job bro
These days, interference prevention coils are not always necessary. By allowing the transistor or IC to switch slower, the strength of the generated harmonics gets consideraby lower which allows the device to pass the RFI tests.
Switching slower does make the power supply less efficient.
My ears are bleeding 😂 přízvuk děsnej jinak super námět 👍🏻👍🏻