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

@audiogek

2 жыл бұрын

KZread recommended this but I can't handle the accent. So that's a no for me..

@dreck66666

2 жыл бұрын

You should see his website... There are 10000 projeeects

@aptube6754

2 жыл бұрын

@@audiogek I'm used to his accent and now I'm loving it idk why

@Zebra_Paw

2 жыл бұрын

@@audiogek It's weird but I watched nearly every video of his channel and I got used to it! It's at least very easy to understand what he is saying because he articulates well!

@thenextproblem8001

2 жыл бұрын

@@aptube6754 same here lol.

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.

@TheSpotify95

2 жыл бұрын

I particularly enjoyed the transformer, it was the best one I've seen on this channel! I've seen on early videos how some transformers have no isolation between secondary and auxiliary, but this one has no isolation between ANY of the windings - secondary, auxiliary and primary! That on its own was well worth it, but then the other problems made it even worse!

@brianwest2775

2 жыл бұрын

And the contrast to that "nice" one was remarkable.

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.

@TheSpotify95

2 жыл бұрын

That charger was by far the best charger I've ever seen, in terms of how badly built a charger can be. It could supply about 100-150mA only before the voltage dropped too low - how useful is that?! Even older smartphones (from about 2012 - 2014?) that only needed about 0.7A (or so) to charge properly, wouldn't charge on 0.15A. And of course modern smartphones require 2A for standard charging, and probably won't charge very well at all if given under 1A (at 5V).

@Pulverrostmannen

2 жыл бұрын

Super Dodgy Extreme?

@matrixmodexp

2 жыл бұрын

It's not the worst. He has found chargers that are not isolated from mains at all. He plugged his iPhone up to one and put a lightbulb between the case and ground and it lit up

@gronnmann8038

2 жыл бұрын

@@matrixmodexp do you have any links of that? Would really like to see

@matrixmodexp

2 жыл бұрын

@@gronnmann8038 here it is! kzread.info/dash/bejne/qYxpu8abqby0d84.html

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.

@Pulverrostmannen

2 жыл бұрын

Ultra dodgy?

@imaginekarma8582

2 жыл бұрын

Dangerously Dodgy

@ivankirola2707

2 жыл бұрын

Mega dodgy

@lakiza55

2 жыл бұрын

Should come with a fire extinguisher dodgy

@Pulverrostmannen

2 жыл бұрын

@@lakiza55 But to be honest. It should be fit for the way only Diode can say it, Like with his accent: “So super dodgy it should not even exist, You gotta be kidding me guys”

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.

@DiodeGoneWild

2 жыл бұрын

If the capacitor had a massive leakage current, it would get hot. This one was cool. But it would probably fail in a long run anyway.

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

@TheSpotify95

2 жыл бұрын

Haha, that transformer is the best one I've ever seen! :D

@dflyfpv8765

2 жыл бұрын

@@TheSpotify95 Franstormer XD

@chrishuhn5065

2 жыл бұрын

@@dflyfpv8765 FranLab has entered the chat.

@JamesBrown-ux9ds

2 жыл бұрын

I thought, a lot of people would think about the same - first reverse the wrong mounted parts, re-measure - and than disassemble. Maybe next time? (Or would the capacitor already have been distroyed from try of use until you got it?)

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

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.

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.

@TheSpotify95

2 жыл бұрын

That's exactly what I said when I first watched this. At least in the other death-chargers (fake Apple, original video, video #2 and video #3) there was isolation between primary and secondary (but not secondary-auxiliary). This time there was nothing between ANY of the windings! And of course let's not forget the inappropriate 1N4148 diode on the output and the 2.5V capacitor on a 5V output. That will definitely (if left on for long periods) blow up whatever it is connected to.

@firefox1136

2 жыл бұрын

@@TheSpotify95 I agree, this is about as bad as it gets...

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.

@TheSpotify95

Жыл бұрын

Yeah that black charger just about does everything wrong. 2.5V cap on 5V output, other cap soldered the wrong way, 1N4148 diode on the output (rated 150mA only), super deadly transformer with no isolation at all, the list goes on!

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...

@koharaisevo3666

2 жыл бұрын

I think because the voltage is sufficiently low.

@user-vm1hi7bo5s

2 жыл бұрын

Or maybe these caps are completely dry, as they come from a recycled electronics

@westelaudio943

2 жыл бұрын

The power probably isn't enough to deplete the oxide layer. Certainly won't last too lomg though.

@r2daw158

2 жыл бұрын

The 2.5V cap is solid polymer one, they don't (well, unless it's in orders of magnitude) explode if overvolted.

You must add new dodginess level - Extra super dodgy 🤣

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...

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

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 ;-(

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

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.

@TheSpotify95

2 жыл бұрын

Also bear in mind that some manufacturers do not include chargers with their phones, so you have to buy a replacement. A lot of people will instead buy cheap chargers from eBay/Amazon or their local phone repair shop, and not a good quality one - hence, this will be more of a problem as people will be plugging their expensive phones into these cheap chargers!

@richardbeckwith4545

2 жыл бұрын

@@TheSpotify95 that’s a very good point.

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

@crashbandicoot4everr

2 жыл бұрын

I'm curious about how the ESR of those caps would measure after running the thing for several hours...

@TheSpotify95

Жыл бұрын

@@crashbandicoot4everr I know, especially given how the output voltage started becoming unstable due to the capacitor being run in reverse. Though when it only manages to provide about 150mA before the voltage drops too low, it's not really suitable for anything. I say manufactured e-waste, unless you take it apart and do some component salvaging. Also, why the 2.5V capacitor on a 5V output ?!

very interesting series ! thanks for teaching me so many things

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!

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

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.

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

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.

@gitawrongtranslation-youtu9701

2 жыл бұрын

GHz ? 🤣

@martin_racz_a_szerelo

2 жыл бұрын

@@gitawrongtranslation-youtu9701 yes, it was written as GHz!

@GayDXer1217

2 жыл бұрын

Microwave powered Charger! Lol!

@dinupetrecristian150

2 жыл бұрын

small correction ; buyed is wrong . the past form for buy is bought

@martin_racz_a_szerelo

2 жыл бұрын

@@dinupetrecristian150 Thanks for this little correction, sometimes I forget about past forms of the words

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!

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

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

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

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

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.

@TheSpotify95

2 жыл бұрын

It's not surprising when some companies (Samsung and Apple are examples) won't supply a charger with their phones! So they have to get their charger from somewhere, but don't want to spend extra £20-30 on a genuine charger... hence getting a cheapy off eBay/Amazon/AliExpress etc.

@KlodFather

2 жыл бұрын

A good brand of charger is SPIGEN. I have bought many of them and they bring the phones and tabs up reasonably fast without hyper charging. Too fast of charging is why batteries do not last long and there are problems with failure.

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.

@TheSpotify95

2 жыл бұрын

The bad one really is truly awful, and the lacquer on the wire just cannot be relied on to insulate you from mains. You can see how well the genuine charger is built, so you know what the transformer should be like!

Please make a video showing how you draw the schematics thanks

Wonderful video. Thank you!

Your fire extinguisher almost made me spit out my coffee.

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....

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

@soradomms

Жыл бұрын

Its indonesian

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.

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

@futuristikdilettante1941

2 ай бұрын

Ben de merak ediyorum 😅

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

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

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

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...

He sounds like chills.

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.

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

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 :)

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

Thanks for your sharing

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

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

A very good episode.

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.

@annoloki

2 жыл бұрын

Maybe the capacitor is made equally as bad, and is labelled the wrong way round!

😂😂😂 the cat in the middle of video 🤣😅

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.

Magnífic job,my congratulations, best video.

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 😁😁😁👍👍👍

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

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.

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

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.

Super dodgy!! 🤣 Classic dgw 😎👍

give dodgy awards at the end of every month

Great video, lovely cat 👍

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

Cat 😺 rules 👍 Extremely cool, as expected 🤓

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

the second charger was nice but the first one..... my sister bought the black one and it exploded and tripped the breaker, yeah i have bad experiences and memories from the first super ultra fire hazard exploding charger

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

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 ! ;)

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

Thanks

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

i once bought a cheap charger for 3€ one night it just exploded while i was sleeping, noticed that first in the when i touched into it trying to unplug it, luckily the power got cut

the things break my heart and upset me is the charger has to be gone with no back that white charger is Super Expansive here and not easy to find because its the Original charger of the phone it could cost up to 250 EGP

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 need this soldering gun where can get ?

Very interesting video! 😁

Cam you buy and test some Huawei chargers?

The soldering in the real Samsung charger looks like it could become lose at any time!

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) ...

Prvýkrát jsem viděl nabíječku s kabelem zapojeným přes konektor, už jenom to je známka kvality. Asi fakt nejlepší je po koupi nabíječky ji prosvítit röntgenem aby bylo jasné, jestli se jedná o kvalitu, ndbo šmejd 😀

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

dude, awesome dialect :D aand educational video also

You can see why that Samsung charger probably cost a few tens of dollars by just looking at the transformer. The black one is the worst I have sent yet.

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.

Brilliant!

Nice video 👏

Fake dangerous vs real dangerous, love these 🤣

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

@TheSpotify95

2 жыл бұрын

Worrying about an inverted or under-rated capacitor really would be the least of your worries when the transformer has absolutely no isolation inside of it! If the transformer overheats, then the windings can (and will) make contact, causing the output to become live at mains voltage.

@estanho

2 жыл бұрын

@@TheSpotify95 Yes I know, I am just thinking about the rated output current. The transformer not having good isolation is dangerous but shouldn't be the reason that charger only outputs 200mA

@TheSpotify95

Жыл бұрын

@@estanho Yeah, so what I would do is change the 2.5V capacitor to be where the reverse capacitor was (and actually solder it the right way around), having the 10V capacitor on the output. At least then the output won't be dragged too low. Or better still, get a much better charger!

Thank yoou!

Good Video 👍 Zdravím srdečně 👊

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 !

@DiodeGoneWild

2 жыл бұрын

Phones with no charger included??? This will cost some lives...

@TheSpotify95

2 жыл бұрын

Samsung are doing this as well, and in fact I've just read an article today that infers Samsung will stop supplying chargers with ALL phones - not just the expensive ones! So people buying a £150 phone won't get a charger, and instead will try and get the cheapest one they can from elsewhere. They won't buy a £20 or £30 charger from Samsung when their phone only cost £150. In fact, the first charger I saw on eBay when typing in "usb phone charger" was one of the copycat Apple style ones (with a UK plug) which has probably already been covered on this channel, and will either be "dodgy" or "super dodgy"!

@Basement-Science

2 жыл бұрын

@@DiodeGoneWild No, it will SAVE THE PLANET by reducing e-waste, dont you know? - (actual reason given by Apple 🤣)

@DiodeGoneWild

2 жыл бұрын

It will save the planet by reducing the human population ;).

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

How to trigger fast charger

I used to buy a fake charger. Thanks for sharing

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