Testing Poundland's 2.1A dual port USB power supply. (with 2kV)

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bigclivedotcom

bigclivedotcom

6 жыл бұрын

Poundland have a new USB power supply (actually £2) with a decent spec. I thought I'd give it a thorough test, including a 2kV flash test.
Here's a link to a very short video showing the insides of the flash tester:-
• Inside the flash tester.
If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:-
www.bigclive.com/coffee.htm
This also keeps the channel independent of KZfaq's advertising algorithms allowing it to be a bit more dangerous and naughty.

Пікірлер: 1 000
@kimsleep4111
@kimsleep4111 6 жыл бұрын
Poundland should approach Clive to put a graphic on its electrical items of BIG CLIVE APPROVED,,,Clive could make MILLIONS
@kevywevvy8833
@kevywevvy8833 6 жыл бұрын
it's a lot snappier than 'We dont sell illegal stuff'
@MrDuncl
@MrDuncl 6 жыл бұрын
They already have Charlie Dimmock for their Garden items. I wonder if she uses them in her own garden.
@mittfh
@mittfh 6 жыл бұрын
And Tommy Walsh for DIY items - while Waitrose have snapped up the third member of the Ground Force trio (probably as he's a bit more high profile than Charlie and Tommy, having done lots of other TV work).
@markhowards420
@markhowards420 5 жыл бұрын
mittfh Tommy has left the building, he's been replaced with snazzy phrases like "stick it" for the cyanoacrylate "stick with it" for glue sticks and "bond together" for the epoxy( which no longer comes with a strong clip,but are available separately)
@markpenrice6253
@markpenrice6253 5 жыл бұрын
Choose your own daft reply: 1/ "Mmm... nice dimmocks!" 2/ "An Excellent product" - Chef Excellence
@Caluma122
@Caluma122 6 жыл бұрын
Hey Clive, I just wanted to say a big thank you for making these videos. Without going into details, your videos are so calming for me. You may not be aware, but your work is so much more than just merely being a source of information. Thanks a million.
@bigclivedotcom
@bigclivedotcom 6 жыл бұрын
Hi Calum, a few people have mentioned that my videos have a therapeutic effect. I'm glad I can help.
@raginranga3494
@raginranga3494 4 жыл бұрын
Yes BigClive, Bob Ross of Electronics 🙌
@Autotrope
@Autotrope Жыл бұрын
I would agree with this, I have a few youtubers I can put on and just calm and soak things in, Clive is one. LGR is another for example
@squ1dd13
@squ1dd13 9 ай бұрын
@@raginranga3494that’s such a good comparison holy shit
@28YorkshireRose12
@28YorkshireRose12 5 жыл бұрын
It's actually quite reassuring to know that there is Clive out here in the real world, taking things apart, not just for our entertainment, but also for our safety - definitely deserves a big TU for his efforts. I honestly though, when Clive started on about insulation testing, that he would whip out a good old Megger, or at least a Robin - Oh, no, let's not just test the insulation, let's get out a Metrohm and try to execute it instead, and it survived. Well done 'Poundland' and well done Clive. Now, the jelly baby thing, I always decapitate mine before I eat the rest of the body, it seems the only human thing to do. Maybe it's a Scottish thing, I don't know, but my granny always told us that's the way it should be done "Bite its head off first, so that it doesn't suffer...." What a thing to teach a 3~4 year old! Glaswegians eh?
@28YorkshireRose12
@28YorkshireRose12 2 жыл бұрын
@Ryan Wiley Actually, on other websites it stands for "Thumbs Up". It means the same thing when all is said and done, but hey-ho. Bloody brilliant old bean, yours was, for once, a reply that was actually readable in one pass. Without punctuation and capitalisation, and all that goes with it, text is meaningless if it just rambles endlessly without natural breaks and pauses.
@LakeNipissing
@LakeNipissing 6 жыл бұрын
This USB power supply is worth every bit of two quid.
@userPrehistoricman
@userPrehistoricman 6 жыл бұрын
1 amp per pound
@james_robertson
@james_robertson 6 жыл бұрын
Prehistoricman no 1.05 amp per£1
@jollygreengiant
@jollygreengiant 6 жыл бұрын
Is the Guinea Amp the post Brexit unit of current?
@SpeccyMan
@SpeccyMan 6 жыл бұрын
There was no c in a British shilling.
@greenaum
@greenaum 6 жыл бұрын
Guineas are originally what you would pay solicitors in. A pound for the solicitor and a shilling for his clerk. Or some multiple of that. Also a way of overcharging posh people by making them think it's a special high class rich-persons price.
@ManWithBeard1990
@ManWithBeard1990 6 жыл бұрын
As a student in biomedical engineering I can tell you why the split-bobbin is still used. In medical equipment that can be electrically connected to the patient, the leakage current through the patient must not exceed 10 microamps through the heart, or 30 through everything else. That will be very difficult to achieve unless you go out of your way to reduce capacitive coupling to the mains. As such a Y-class cap will generally be omitted, I reckon. In fact, some less sophisticated or older equipment will run on battery power and be disabled while charging, because of this. There's a lot to say about medical equipment. Not just safety, but properly measuring stuff as well, because it's sometimes not as straightforward as you'd think.
@steuk6510
@steuk6510 5 жыл бұрын
I have a degree in electrical engineering. And programming and physics I study sciences and medicine histology histopathology cytology forensic pathology diagnostic medicine biomedical bone sciences ect. I use andunio boards with shield boards to do ecg and the sensors. For spo2. Ect I like the spo2. Pulse ox ect and ones for blood sugar test
@johnm2012
@johnm2012 4 жыл бұрын
@@steuk6510 How come someone as clever as you has not yet mastered the use of the comma?
@raginranga3494
@raginranga3494 4 жыл бұрын
@@johnm2012 When he's that smart he doesn't write his posts, he has plebs write his posts for him!
@raginranga3494
@raginranga3494 4 жыл бұрын
@M Harris 🤣😂
@TheMagicQsGaming
@TheMagicQsGaming 4 жыл бұрын
@@johnm2012 I would assume their main language is a different language, which makes sense if you take a second to consider before posting a comment.
@whitehoose
@whitehoose 6 жыл бұрын
Lol - comes with a Tom minder!!! When my graddad's oldest brother Tom was about 18 months old he'd be left outside on the pavement in a playpen to enjoy the sun (you could do that in 1909). To keep him quiet Great gran would dip a feather in treacle and hand it to Tom. He'd spend many a happy hour trying to put the feather down!!! Watching you with the sticky thing - it was like being there .... :D
@iamdarkyoshi
@iamdarkyoshi 6 жыл бұрын
I actually really like the slight bump in voltage as the current rose. Pushing 2A through a USB lead means its probably not going to be 5v by the end unless you bump the source up a bit.
@blattferenc9647
@blattferenc9647 6 жыл бұрын
Luke Den Hartog Yes, that is very important. I wish, that every charger did that. If a smartphone senses a voltage drop, while it is charging it is going to lower its current draw, becase it thinks, that the charger can't handle it. There are too many chargers that can't even hold 5V at over 1A.
@stefantrethan
@stefantrethan 6 жыл бұрын
Many of the primary side sensing ICs have cable compensation built in these days, but what do you set it for if you do not know which USB cable might be used?
@blattferenc9647
@blattferenc9647 6 жыл бұрын
stefantrethan IMHO linear increase from 5V at 0A to 5.3-5.4V at 2A. I think this is the best way. Even the best USB cables drop 0.3-0.4 at 2 A.
@Mark1024MAK
@Mark1024MAK 6 жыл бұрын
Blatt Ferenc Yeah, just one problem. If you have a power hungry device and a low power device both plugged in at the same time, the low power device will get the higher voltage. Which it may not like... Now if USB leads were made of decent sized copper conductors, there would be less volt drop.
@blattferenc9647
@blattferenc9647 6 жыл бұрын
Mark 1024MAK I can't think of any USB device, that gets damaged by 5.3V. That has to be within tolerance.
@alberttatlock5237
@alberttatlock5237 5 жыл бұрын
Considering these are 2 quid and allows for a reasonable profit, think how much people buying iPhone usb chargers are being conned out of. Still made for about 22P like the 2 quid one's.
@JohnBailey39
@JohnBailey39 4 жыл бұрын
But... but.. they are magically made with innovative industrial design.. And no doubt aircraft aluminium something or other. In reality.. From the tear downs at least, Apple have comically over engineered them. And then shoved them into a tiny plug for the faithful to buy for stupid money.
@DiodeGoneWild
@DiodeGoneWild 6 жыл бұрын
The resistor in parallel to the inductor is for damping. Otherwise, the inductor together with those capacitors may become a resonant circuit. CLC network is good for EMI suppression, but it has its resonant frequency, so it is good to add a resistor to bring the Q down.
@Audio_Simon
@Audio_Simon 6 жыл бұрын
DiodeGoneWild Makes it more of a shelf filter too, doesnt it?
@-yeme-
@-yeme- 6 жыл бұрын
Even more saaaaaaaaalllttt. :D hi DGW love your vids
@InssiAjaton
@InssiAjaton 5 жыл бұрын
Not ONLY so. Turning AC power on (or plugging the unit in the socket), the inrush to an empty capacitor through the choke builds up higher than continuous current. Next the AC voltage decays, but the choke drives current in the same direction. That results in as much as DOUBLE voltage at the capacitor without some sort of mitigation like the resistor.
@nightfire9748
@nightfire9748 5 жыл бұрын
My favourite electronic engineers bigclive eletroboom diodegonewild and photonics induction you guys are awesome I watch all the time diode your funny but you need to do more funny stuff keep up the grate work guys
@smlunchen7789
@smlunchen7789 6 жыл бұрын
Can you do the high-voltage test with the shitty pink one?
@LordSandwichII
@LordSandwichII 5 жыл бұрын
That would be AWESOME!
@tmdrake
@tmdrake 5 жыл бұрын
I wanna see it explode!
@jrmcferren
@jrmcferren 5 жыл бұрын
@@tmdrake I think that is the "burn" setting.
@firepower9966
@firepower9966 4 жыл бұрын
"Oh, That is Tight , that is a Good Thing!"
@heyhococo
@heyhococo 6 жыл бұрын
I saw these in my local Poundland, but thought “Aah, I’ll wait for Clive to blow it up or say it’s excellent before I buy one. Clive likes the Poundland shit” :D
@IanSlothieRolfe
@IanSlothieRolfe 6 жыл бұрын
I prefer to nibble jelly babies from the toes up. If you listen very carefully you can hear their little jelly screams..............
@SpeccyMan
@SpeccyMan 6 жыл бұрын
Some of us down in the SW also eat them head first.
@AD-pv7ub
@AD-pv7ub 6 жыл бұрын
I quickly cut their heads off first to avoid causing them any unnecessary pain.
@Raycast_
@Raycast_ 3 жыл бұрын
I want to hear them scream from inside my stomach
@chems
@chems 6 жыл бұрын
16:44 the silk screen says R10 R9 R8 C4, it seems they have put a resistor in place of the capacitor
@dabombinablemi6188
@dabombinablemi6188 6 жыл бұрын
Never thought I'd see you outside your channel.
@lachlan1971
@lachlan1971 4 жыл бұрын
They both end with "r", it'll be fine.
@OAleathaO
@OAleathaO 6 жыл бұрын
6:29 - "And I'll even try to stay in shot as a special treat..." Don't worry Clive. From all of your videos I've watched you are by far the BEST at staying in shot AND in focus compared to other KZfaq video posters.
@toni0034
@toni0034 6 жыл бұрын
I love the way you talk and explain stuff like ".. they quite often just blow the lid off with a massive bang, usually in the middle of the night when people are sleeping just to wake them up and terrify them..". literally haven't found other channels like this.
@piotricz
@piotricz 6 жыл бұрын
I'm looking forward to seeing some cheap shitty stuff tested with that flash tester.
@evilutionltd
@evilutionltd 6 жыл бұрын
Those FLIR lenses are superb!
@sivalley
@sivalley 6 жыл бұрын
Mike's wish for a field-attachable macro lens came true. it only took a few years for the rest of the internet to catch on. XD
@jackjude
@jackjude 3 жыл бұрын
Within in only 60 seconds of a Poundland £2 power supply video, this guy establishes himself as quite a character.
@philking7805
@philking7805 5 жыл бұрын
I've only watched 70% of the video yet, but two things I already like: 1 you're not wearing any plasters so you've clearly been taking care recently and 2 the warranty void sticker on your flash tester has been cut through :-)
@mgunter
@mgunter 6 жыл бұрын
I'm so used to SignalX meaning crap on Ashens, I'm surprised.
@aerofly2
@aerofly2 6 жыл бұрын
I wonder how many times you actually hear someone saying “I’m bending my spudger” on KZfaq? 😂
@startedtech
@startedtech 6 жыл бұрын
I mean if you're watching a channel that disassembles electronics....not too uncommon
@jk9554
@jk9554 6 жыл бұрын
how often do they say "uhh, that's tight" just before? ;p
@Zulf85
@Zulf85 6 жыл бұрын
I'm glad I'm not the only one who's always thought "spudger" sounded immensely sexual
@user-tf7jy7xg7s
@user-tf7jy7xg7s 4 жыл бұрын
Not on KZfaq but maybe on RedTu-
@eugenenalpin6058
@eugenenalpin6058 4 жыл бұрын
Well, how often do you hear "screwdrivers are good for impaling people" on youtube? (Literally the next phrase)
@WalidIssa
@WalidIssa 6 жыл бұрын
It deserves every minute .... Brilliant
@deantubeful
@deantubeful 6 жыл бұрын
It is reassuring when someone with your working knowledge has been over some operation/safety aspects of a device. This is a honourable service you provide here. Interesting and humorous aswell. Thank you Big Clive. My father bricked my 500w PC PSU by charging his E-ciggy via the USB port whilst the PC was off ! Or that is my theory as A. I always blame him and B. As the PSU cooling fan would not be in operation whilst the computer was not running although the USB ports would still be live allowing him to charge. I'm guessing, after seeing your testing, that overheating was the problem which I'd already theorised that it might have been. I've kept the unit as it was a good PSU and now you've simplified that circuitry I might try to find a similiar diode in it for testing. Thanks again.
@supergeekjay
@supergeekjay 6 жыл бұрын
I think it's more to do with either an old stressed PSU, or your father's E-Cig battery was faulty. Cheap e-cig batteries have been known to draw too much current, catch fire. The fact your PSU fan was off is irrelevant, that only runs under full power on. The USB ports on a computer can normally only supply 500mA unless it's a special charge port which still only gives out up to 2A. The 5v rail on your PSU can output 20A maximum, so if your PC is off you still wouldn't come close to overloading it with a USB device. I'd test the output capacitors on your PSU, they are usually at fault on SMPS's, especially cheap ones.
@KSSilenceAU
@KSSilenceAU 6 жыл бұрын
Minor correction, the Main 3.3v / 5v / 12v rails of the PSU are NOT Powered when the machine is "Off". The only rail that remains on is the "5VSB" (5V StandBy) rail, which is only ever rated at a few amps on PSU's and the cheaper ones tend to be less, say 2A or so, where as more expensive PSU's such as Seasonic and Superflower tend to be around say 4-6A or more, So if you have a machine with a cheap PSU turned off, and charging USB devices from it then you may be overloading the 5VSB rail. Dont forget that even though the machine is "Off" certain things are still powered from the 5VSB rail if its plugged in and receiving power, including things like the NIC's so that you can wake up the machine remotely, and the Ram if the machine is in "POS" (Power off Suspend). Combine that with USB loads and you have a chance to overload the 5VSB rail. A proper PSU should have protection on the 5VSB rail, and it should shut down that rail if its overloaded like it would the main rails, but with cheap PSU's you dont always know what your getting.
@dimitar4y
@dimitar4y 6 жыл бұрын
UK sockets were specifically engineered to blow up things in the middle of the night when people sleep to scare them :D
@DanielLopez-up6os
@DanielLopez-up6os 5 жыл бұрын
Well that way the germans would not know what to do.
@dav1dsm1th
@dav1dsm1th 6 жыл бұрын
The silk-screen for the resistor ladder alleges the end component is a capacitor (C4) - so maybe that elusive capacitor is hiding in there, disguised as a resistor.
@whitefields5595
@whitefields5595 6 жыл бұрын
Clive, thanks for doing this. I would never have bought one of these from Poundland but now I will
@NOWThatsRichy
@NOWThatsRichy 6 жыл бұрын
That looks a quality item, for the price, it's got the full 5 volt & a bit more output, I bought a similar one in Lidl a few months ago, which although it works OK, outputs 4.9 volts. On another thing, almost worth a testing video in itself is the varying quality of USB charging cables I've got loads ranging from OEM ones, pound shop ones, dearer ones and even a home made one, and they all have different charging times, particularly noticeable when charging a tablet at 2.1 amps, not so much with a phone.
@FireballXL55
@FireballXL55 6 жыл бұрын
Winding on a single bobbin reduces losses, and it is also quite common for a split primary half in the centre and the other half on the outside with the secondaries between again to reduce losses and leakage inductance.
@cmj20002
@cmj20002 6 жыл бұрын
Seems like it is well made and as the draw increased the voltage regulation worked well as it increased voltage as the load wen't up. Very good.
@JETJOOBOY
@JETJOOBOY 6 жыл бұрын
I'm saving up for one of these....... They aren't a Pound.......🙇
@maciejpociecha6357
@maciejpociecha6357 6 жыл бұрын
JETJOOBOY I was just wondering how the hell they make any money selling those for a pound, was starting to suspect Poundland was a money laundering operation.
@JETJOOBOY
@JETJOOBOY 6 жыл бұрын
Maciej Pociecha now there's a theory...
@stevejones8665
@stevejones8665 6 жыл бұрын
How the heck they make them for £2 and such good quality...love to see a British Company make just the Pcb for that price..
@DetroitDiesel671
@DetroitDiesel671 6 жыл бұрын
A currency manipulating communist government utilizing slave labor.
@JETJOOBOY
@JETJOOBOY 6 жыл бұрын
DetroitDiesel671 Hmmm, could be.... Could be! Or just a Loss leader as the sell Ibuprofen for 3 times what Aldi do...
@Uzeless
@Uzeless 6 жыл бұрын
Bought two of these yesterday on the strength of this brilliant review. Clive does it again!!
@SeanBZA
@SeanBZA 6 жыл бұрын
Resistor across the power supply inductor is there to damp the inductor, so that it does not ring with applied transients, instead damping the energy away.
@travcollier
@travcollier 6 жыл бұрын
I'm impressed with how a good bit of this Chinese manufacturing is going. Well designed "cheap and cheerful" instead of just "as cheap/crap as we can make it". The tiny big of extra $ is very much worth it. Now the question is how to tell the difference without having to buy stuff and tear it apart. I know there is UL and other testing/rating orgs, but they are so slow and expensive that a lot of even good manufacturers don't bother. Maybe Clive can do a "not a deathtrap" certification for them instead ;)
@dariusz078
@dariusz078 5 жыл бұрын
It is not a good charger. It make huge noise to FM radio. My Samsung charger does not do that. Samsung is real technology, not this piece of junk.
@andygozzo72
@andygozzo72 3 жыл бұрын
@@dariusz078 pretty much all switch mode power supplies/regulators generate rf 'noise' , some much more than others.... the samsung must have good filtering...
@andygozzo72
@andygozzo72 3 жыл бұрын
and also depends on the switching frequency
@neodonkey
@neodonkey 4 ай бұрын
Agree, I googled the supplier and they look Kosher, they're still in business and have been since 2006. I have real admiration for people who can do "cheap and cheerful" when most will settle for "lowest possible price/highest profit, fuck it if people get killed." If their website is to be believed (who really knows?) they have gotten various certifications.
@neodonkey
@neodonkey 4 ай бұрын
@@dariusz078Obviously a real Samsung or Apple charger is going to be superior, you get what you pay for, but selling to the end user at £2 and it not being a death hazard is pretty darn good in my books.
@badjuju6563
@badjuju6563 6 жыл бұрын
Well that raised the bar...... excellent work. Loved the longer format.
@najafali840
@najafali840 6 жыл бұрын
I’ve bought 5 of these already because of your review ! Keep reviewing Poundland items I always buy things you recommend
@CharlieFlemingOriginal
@CharlieFlemingOriginal 6 жыл бұрын
Do you think Poundland tell the buying team to check all electrical stuff is going to be BigClive approved and if they buy anyole tat they will be sacked and work for Poundworld?
@atomicbocks
@atomicbocks 6 жыл бұрын
They just send the nice ones to the store that Big Clive shops at.
@CyberlightFG
@CyberlightFG 6 жыл бұрын
It would be really great if someone takes a sample to bits before selling it in large scales. The sad part is, that there are people out there knowing that they sell crap and can't do anything about it because of costs. Planned obsolescence is another keyword. They don't sell parts that last forever on purpose.
@stupossibleify
@stupossibleify 6 жыл бұрын
I'd like to think the buyers know what they are doing, but I suspect they are not experts and rely upon the promises from Chinese OEMs. Maybe they've just been lucky.
@petermichaelgreen
@petermichaelgreen 6 жыл бұрын
More likely they tell the buying team that under no circumstances do they want to be in the papers and courtrooms because they sold a power supply that killed someone.
@stupossibleify
@stupossibleify 6 жыл бұрын
PETER GREEN I don't think any shop deliberately buys dangerous electricals from China. All look for CE approval, but that doesn't cover everything (and let's assume the CE conformity is genuine)
@stevenbirch
@stevenbirch 6 жыл бұрын
Why no split bobbin? In a low-cost supply like this where the auxiliary winding also provides voltage feedback, it's essential to have a very tight coupling between the auxiliary winding (which is actually the regulated output) and the main output (which is only "cross-regulated". If the coupling is poor, then the output regulation suffers. A split bobbin arrangement in a high frequency transformer probably may not give adequate coupling. If it was a power supply that truly regulated the main output (say, using an opto-coupler feedback arrangement), then it probably wouldn't matter so much.
@fortuner123
@fortuner123 6 жыл бұрын
Well after seeing the doctor and him telling me I have to exercise minimum 30 minutes per day ( no alcohol), I found this vid extremely useful to while away the time. 35 minutes sped by so I shall be eeking out your vids on a daily basis for now on. I bought a blood pressure monitor from the pharmacy (battery wrist type) however it doesn't give as high a result as the hospital one. I'll have to investigate how to synchronise but maybe cannot. I thought a breakdown on one of these would be interesting. Thanks, I am continuing to make slight headway with my electronics learning but still at false beginner level!
@Astro_War
@Astro_War 6 жыл бұрын
Watching this via Bluetooth speaker and iPad while lying in the bath drinking cherry brandy is the best 35 minutes of my week.
@mahan518
@mahan518 4 жыл бұрын
25:31 "I could just poke this in the circuit board and ya know... EHHHH" 😂
@khronscave
@khronscave 6 жыл бұрын
32:40 I'm reasonably sure the lack of split bobbins in switchmode transformers is due to superior magnetic coupling between the windings, when they're overlaid. That's far less of an issue in iron mains transformers, which is why you'll see split bobbins / windings there.
@Mark1024MAK
@Mark1024MAK 6 жыл бұрын
Khron's Cave I remain to be convinced. The magnetic field is induced in the transformer core. Then the collapsing magnetic field induces current in the (secondary) windings.
@khronscave
@khronscave 6 жыл бұрын
I stand to be corrected, of course. And for what it's worth, from what i've seen, CCFL inverter transformers seem to usually have split-bobbin windings, despite operating at high frequencies.
@colinoverton8897
@colinoverton8897 6 жыл бұрын
Dear Clive, You are rather lucky to have such a good Poundland. The 2 by me only do the one amp power supply.
@cyberraxx9268
@cyberraxx9268 5 жыл бұрын
I've only justcome across this video. Wine, sweets and electicals, the perfect combination. I llike how he says "Im just gonna have another drink of wine cos it'll make the next gadget more interesting" then his hand slowly slides off the table.
@FarWesternGarrison
@FarWesternGarrison 4 жыл бұрын
I ended up reading your comment at the same time as him saying and doing that.
@Aubreykun
@Aubreykun 6 жыл бұрын
Hey Clive, have you considered putting some sort of crosshair or bullseye on the bench centered on the max zoom of the camera? Something like matte tape, a paper template, marker or using the guides on a cutting mat might work to keep yourself reassured that you're in frame.
@davidmcgill1000
@davidmcgill1000 6 жыл бұрын
He can use the burn marks as reference point.
@beware_the_moose
@beware_the_moose 6 жыл бұрын
He has. It wasn't good, I recall everyone complained about it.
@nathanwilkins6107
@nathanwilkins6107 6 жыл бұрын
I was just thinking that actually.
@dant5464
@dant5464 6 жыл бұрын
"Ooh that is tight, I'm bending my spudger" Aaaaand, demonetised. Thanks for the video, cheap but decent PSUs are always handy for projects involving RPi, little micros and the like.
@rickymherbert2899
@rickymherbert2899 3 жыл бұрын
One of the un-intended benefits of lockdown; you don't mind loosing a day to watching Clive's library of content. Still browsing and enjoying it.
@rolls_8798
@rolls_8798 3 жыл бұрын
22:00 I always wondered why I could feel a tingle whenever I lightly touched MacBooks when they were charging. No one else could feel it and they all thought I was insane. It was more pronounced on the 2015-19 gen MacBook airs but it is still there in almost all of the models. The same thing happened when I was charging an iPhone 4s(with a stainless steel band) with slightly higher than rated voltage, that time I dropped the phone. Thanks for clearing that up big Clive!
@neodonkey
@neodonkey 4 ай бұрын
I've noticed it too. You're not insane. Maybe we're "sensitive". You're not supposed to feel an MRI but I definitely felt it (tingles) and could the describe the motion the operator was making.
@Enjoymentboy
@Enjoymentboy 6 жыл бұрын
It's no different than with chocolate bunnies at easter. You ALWAYS start by eating the ears first. Then the face and head.
@dagnam189
@dagnam189 6 жыл бұрын
Your a sick man.
@charliedobbie8916
@charliedobbie8916 6 жыл бұрын
But when do you insert the pyros?
@chrwl007
@chrwl007 6 жыл бұрын
+Charlie Dobbie Poor Mr Bun-bun
@28YorkshireRose12
@28YorkshireRose12 5 жыл бұрын
@ Boring Old White Guy. Aye, that's true, but you don't normally stick a firecracker up its bottom and blow its brains out! LOL!! Hmm, "Bunny McPhee And The Big (Clive) Bang" - I know, let's make a movie about that...
@waltermcphee3787
@waltermcphee3787 4 жыл бұрын
We had a cat that are bunnies that way and often left the meaty legs.
@Tocsin-Bang
@Tocsin-Bang 6 жыл бұрын
They have jelly babies in Portugal, I forget the name. I've spent a lot more than £2 on a USB power supply that was nowhere near as good as this one.
@neilwilliams2907
@neilwilliams2907 4 жыл бұрын
Clive, sorry if someone has already mentioned this but I think you are confused over the 'R2' at 14:25 because the left hand photo needs to be rotated 90 degrees to the right. I'm probably wrong as I know noting about electronics, just love your passion :-) .
@petermoore4056
@petermoore4056 6 жыл бұрын
I bought one yesterday. Clive reviews today. I should really have waited for Clives seal of approval! But very happy!
@BillyF2LJeffs
@BillyF2LJeffs 6 жыл бұрын
I'm pretty sure by now that the people who design for Signalex are now watching your videos and learning how they are fucking up so bad :p
@greenaum
@greenaum 6 жыл бұрын
I imagine Signalex is whichever of five dozen different Chinese factories makes the lowest bid for each particular product. The manufacturing side speak very poor English going by the paperwork you sometimes get included. The "designer" might well be plans stolen from the bins round the back of somebody else's factory.
@jaykoerner
@jaykoerner 6 жыл бұрын
They don't use glue for the most part on plastic cases, the word your looking for is ultrasonically welded.
@44R0Ndin
@44R0Ndin 6 жыл бұрын
Additionally, I'd imagine that the ones that do use "glue" are actually solvent welded rather than using anything that could be on its own called an adhesive.
@supergeekjay
@supergeekjay 6 жыл бұрын
"the word your looking for is ultrasonically welded". That's two words, lol. And it's "you're" not "your", hehe
@tdp2612
@tdp2612 5 жыл бұрын
Bought one of these purely based on this video, sponsorship should be in place
@richardturnnidge
@richardturnnidge 6 жыл бұрын
What a relief, I just bought four of these last week and was hoping they would be ok!
@aliteraldumpsterfire672
@aliteraldumpsterfire672 4 жыл бұрын
"Cuz we eat wee babies!" You sounded too much like *The Demoman*
@tonybronze7459
@tonybronze7459 6 жыл бұрын
Thanks for this. Picked up one of those chargers from Poundland last week and was a bit dubious about using it. Gingerly plugged in in yesterday holding at arms length in case it went bang :) It managed to charge a power bank for about 3 hours at 2.1 amp but it did get a bit hot (now I know why). Won't worry so much about using it again.
@lumpyfishgravy
@lumpyfishgravy 6 жыл бұрын
Excellent teardown thanks! I'm generally dubious about any mains powered from Poundland but that looks decent and I will fill my basket with confidence next time I'm in town. I'm unclear why the total leakage wasn't linear. You really don't expect the I/V gradient to reduce as V increases. The flasher flash testers can discriminate reactive from resistive current, but are rather pricey.
@mattsmedley.onehandedgamin9029
@mattsmedley.onehandedgamin9029 4 жыл бұрын
Rather pleased that I picked up one of these last year now.
@JETJOOBOY
@JETJOOBOY 6 жыл бұрын
Am I correct in saying that it will put out 1 Amp per USB port when charging 2 gadgets simultaneously?
@anlumo1
@anlumo1 6 жыл бұрын
Depends on the devices, they might also draw 1.5A and 0.5A.
@Mark1024MAK
@Mark1024MAK 6 жыл бұрын
JETJOOBOY More correct to say that the total output is 2A. But if a USB device is intelligent, it will limit it's current demand. Whereas a 'dumb' device may not limit it's current demand.
@anlumo1
@anlumo1 6 жыл бұрын
Yes, they do that by ramping up the amps until the voltage drops, then they go back a bit. This is not trivial to make and requires a microcontroller for charge control, so only expensive devices implement it.
@muzikman2008
@muzikman2008 6 жыл бұрын
anlumo1 well it is £2 😊 top end poundland ha ha...
@Funkspace
@Funkspace 5 жыл бұрын
I have an iPad Air 2 which will draw up to 2.1 amps on an official apple charger and some others. On this Signalex /Poundland 2.1 amp charger I can only draw 1Amp when using one usb socket. In tests, where at the time using apple’s 2.1Amp charger with single socket, it was drawing 1.6Amps at the charging phase that the iPad was in. So it looks while the charger will output 2.1 amps on spec, it will not output more than about 1 amp on each port, unfortunately. But it’s still useful because of its dual 1.1(?)amp output capabilities, but not that useful for charging a single beefier device quickly... a bit of a shame...
@a-sch
@a-sch 6 жыл бұрын
Great video, as usual. Can you take apart an Anker 60W charger? That should be skookum as frig
@44R0Ndin
@44R0Ndin 6 жыл бұрын
I'm an Anker fan, and I second this! Would be a breath of fresh air to see the insides of a "unsurprisingly good" charger look like.
@smartchip
@smartchip 6 жыл бұрын
Ave,
@tyttuut
@tyttuut 5 жыл бұрын
They make good stuff. I've had some of their Micro USB cables for about two years and none of them have become wonky like all the cheap cables I had inevitably did.
@someguy2741
@someguy2741 6 жыл бұрын
Lol. You sir know how to have a good time! I've just taken apart the best solar motion sense light ever... eating Mamba candy... drinking an ice cold coke with grenadine... and now watching Big Clive.
@kareno8634
@kareno8634 6 жыл бұрын
So Nice of you, Christoph! I heard Clive Smile. 'Decorative' Useful Toy works well.
@Erebus-PCFX
@Erebus-PCFX 4 жыл бұрын
Alternative title: _"Old man eats edibles while trying to retro-engineer a Poundland smarphone charger."_
@theoriginalbabycub
@theoriginalbabycub 6 жыл бұрын
Can it supply the full 2.1A to each usb socket at the same time or does it split the 2.1A across the sockets when two devices are plugged in.
@AndrewGillard
@AndrewGillard 6 жыл бұрын
The two ports are completely commoned, so the 2.1A he got from one port will be the max you can get from the supply in total.
@The8BitMonkey
@The8BitMonkey 6 жыл бұрын
I was going to buy one of these yesterday but thought "best check to see if BigClive has cracked one open yet" glad it's had the sign off from you, puts my mind to rest a little ☺️
@alpachino468
@alpachino468 5 жыл бұрын
As a semi-complete noob, I want to learn more about power supplies, and the components that make one up, including why components are placed where they are on a board, but I'm finding it rather difficult to find good explanations. Thanks for the videos though, I thoroughly enjoy watching them.
@thepvporg
@thepvporg 6 жыл бұрын
That charger is about as tight as my first girlfriend... ... and she bent my spudger.
@BedsitBob
@BedsitBob 5 жыл бұрын
She bent your spudger, did she? That's what you get for trying to copy the Kama Sutra. 😀
@athenasword1
@athenasword1 4 жыл бұрын
Mark Giblin you luck sod!
@blower1
@blower1 6 жыл бұрын
5:15 - 5:45 ...Clives first Bra removal experience.
@BoB4jjjjs
@BoB4jjjjs 5 жыл бұрын
These are £2 and I have used one for some time now without any problems at all. Good buy for £2 and the phone does charge a bit faster, maybe this is because the original charger gave up and I used another one that did not belong to the phone, the phone always complained it would charge faster if I used the charger that came with the phone (It is dead so it would never charge at all using it. lol) so I bought one of these. It still complained about it not being the charger that belongs to the phone, however, it does charge a lot faster. Can be used as a power supply for 5v at around one and a half amps, but one amp continuous. Nice one Poundland.
@RWBHere
@RWBHere 6 жыл бұрын
That's impressive. Thanks Clive.
@SkuldChan42
@SkuldChan42 6 жыл бұрын
You can get Jelly Babies in the US - and we're hardly dignified ;).
@igmusicandflying
@igmusicandflying 6 жыл бұрын
Yes, and many of us in the States also use the phrase "brute force and ignorance". I've even worked at a couple places where it was abbreviated to "BFI".
@DaveLennonCopeland
@DaveLennonCopeland 6 жыл бұрын
Clive, when you say the plug is red, I would say it looks orange. Pillar box red or even KZfaq red, it is not. :)
@whonose3223
@whonose3223 6 жыл бұрын
Dave Lennon-Copeland Life is mauve, I am orange. Hic hac hoc.
@Mark1024MAK
@Mark1024MAK 6 жыл бұрын
Dave Lennon-Copeland Colour is in the eye of the beholder... but it's close enough to red for me 😜
@DaveLennonCopeland
@DaveLennonCopeland 6 жыл бұрын
Mark 1024MAK - I get ya... maybe it is his new lighting that makes the colours look out.
@hermannpaschulke1583
@hermannpaschulke1583 6 жыл бұрын
NEVER trust orangg
@DaveLennonCopeland
@DaveLennonCopeland 6 жыл бұрын
Who Nose - Mauve is a nice colour too! :)
@jimdewolf1483
@jimdewolf1483 4 жыл бұрын
There is a 'maximum frequency' set by the slow rate at which the applied H field penetrates the core material, which determines whether the full inductance (caused by magnetizing all the volume of the core) is available. And, there is another 'maximum frequency' set by the losses, both magnetization hysteresis and eddy-current induced in the (slightly conductive) iron. At any given drive level, exceeding that maximum frequency will melt your wiring. Because iron is a nonlinear material, the only way to get useful data for power applications, is to experiment at high power drive. Such cores as these may be used for filtering (where 'power loss' is a good thing), or resonators (where 'power loss' is a bad thing), or transformers (where 'power loss' depends on the output impedance as much as on the core). The core, as such, doesn't have any hard maximum frequency of usability.
@Vidar_Odinson
@Vidar_Odinson 6 жыл бұрын
Very satisfying seeing the quality of insulation on that transformer, compared to some others you've taken apart.
@bdot02
@bdot02 6 жыл бұрын
Are we still doing phrasing?
@realmenshoot3085
@realmenshoot3085 6 жыл бұрын
bdot02 Yes, for fun and profit! We just quit doing Archer.
@uK8cvPAq
@uK8cvPAq 6 жыл бұрын
>8.6c room temperature
@xIntoThePitx
@xIntoThePitx 6 жыл бұрын
I'm at 23 wearing a sweater, but low humidity. 8.6 for an extended period would render my hands next to useless as they'd work in slow motion and no strength, let alone all the shivering and organs shutting down.
@xIntoThePitx
@xIntoThePitx 6 жыл бұрын
Not interested, thanks for your interest anyway
@JuanHerrero
@JuanHerrero 6 жыл бұрын
South Spain, been around that for weeks. So much for global warming.
@44R0Ndin
@44R0Ndin 6 жыл бұрын
THX 1138 Maybe some people just don't like the cold? I'm a male and only weigh 135 pounds, the cold gets to me rather quickly as I have no insulating fat layer to protect me.
@dshe8637
@dshe8637 4 жыл бұрын
Scotland
@johnjones4825
@johnjones4825 4 жыл бұрын
A man after my own heart, although I eat chocolate as opposed to jelly babies with my wine. I use what we in Cape Town, South Africa, call a "skinderglasie" (literally a little scandal or gossip glass, much smaller than what you have on the bench) You can imagine a circle of friends drinking from one bottle, be it beer, wine, whatever, each getting a little at a time until the next bottle is opened. (beer is lately sold in litre bottles here, great for sharing!)
@FerralVideo
@FerralVideo 7 күн бұрын
Clive, I have to respect you for not wanting to have loud eating noises on your video. Thanks for that. Another KZfaqr I *used* to follow has developed the habit of eating loud crunchy kettle chips during their live podcast show. Every. Freaking. Week. they do this. It's two hosts talking to each other and tossing tech news topics off each other, but the one will go "Hey, other-host, how do you feel about this? *CRUNCH CRUNCH CRUNCH CRUNCH CRUNCH*" and it has made it unlistenable for me.
@55kompressor
@55kompressor 6 жыл бұрын
Jelly bebes
@AdmiralPreparedness
@AdmiralPreparedness 6 жыл бұрын
Nice presentation sir. One day in the not too distant future, all electronics will no longer have the high voltage AC input voltage and that will save the consumer a small fortune. And lives. The "DC Home" will become a reality. Central Smart Inverter and Smart HOME DC wiring / EMI appliances......
@Mark1024MAK
@Mark1024MAK 6 жыл бұрын
Admiral Preparedness Not going to happen anytime soon... Manufacturers have yet to take on board the suggestion of a universal power adapter "standard" voltage... The nearest we have is USB, but USB was intended only for computer peripherals.
@98dizzard
@98dizzard 6 жыл бұрын
Since when is DC safe? DC is much more dangerous than the equivalent AC voltage.
@Mark1024MAK
@Mark1024MAK 6 жыл бұрын
Daniel I Which type of DC? Rectified AC (has a peak voltage 1.4 times the RMS value, similar to AC), or "smooth" DC (like from a battery, or regulated DC PSU). In telecommunications, a lot of equipment uses 48V to 55V DC supplies. In older exchanges, there are no safety insulation barriers.
@98dizzard
@98dizzard 6 жыл бұрын
Mark 1024MAK I'd rather touch a 240v AC supply than a 240v DC supply, AC pushes you away, DC pulls you in. Not only that but DC is much harder to switch mechanically as it arcs much worse. This would lead to premature failure of switches and plug/sockets. If you are talking about having an extra low voltage (12v for example) supply in the house, then this would either need MASSIVE conductors to supply household equipment or it would need to be a separate circuit in addition to the low voltage AC supply.
@jafafa
@jafafa 6 жыл бұрын
The most dangerous kind of DC is Washington DC
@captainboing
@captainboing 18 күн бұрын
Great vid again big man. I just wanted to let you know i have ended up buying some stuff because you go into such depth. I have been stung so many times on cheap chinesium crap that i had almost stopped purchasing. These vids are so informative that they can swing it for me... Off to poundland to grab a couple of these. Good job!
@FindLiberty
@FindLiberty 6 жыл бұрын
APPROVED - nice thorough review! (as usual)
@namespacetoosmall
@namespacetoosmall 6 жыл бұрын
Maybe you can just stick with "cheap shitty stuff" without saying "from China"? Since the good stuff (including most electronics we use, including big brands) also comes from China...
@bigclivedotcom
@bigclivedotcom 6 жыл бұрын
It's reference to coming directly from Chinese sellers on eBay, but you're right. I do sometimes correct myself. I've definitely nothing against the Chinese.
@saintq3888
@saintq3888 6 жыл бұрын
Tom I think you blew a fuse buddy ...Big Clive is right to say from China since the stuff he buys IS FROM FUCKING CHINA !
@markhodgson2348
@markhodgson2348 6 жыл бұрын
Tom De Mulder tell all the British workers that when they face redundancy from all the shit flooding great Britain
@mr.shadowman6618
@mr.shadowman6618 6 жыл бұрын
Well, wrong. If you do find a cheap shitty piece of electronica, chances are it's made in China. That country became synonymous with crappy plastic products that are mass produced with little to no care about quality and safety for the end user. True that it also produces the best there is as well, but that's besides the point. I'm sure that when he will review something expensive made in China, he will say the opposite, so shhh....
@SedatedByLife
@SedatedByLife 6 жыл бұрын
A vast majority of products coming from China ARE junk. It's just a fact. There are a couple cities where components are manufactured in China where they're actually quite good like bearings but they're an exception to the rule. I have friends from many parts of the country including regions of Asia and even they warn against buying full assembled products from China. Over here we have Harbor Freight - a huge hardware store chain (if you're not from here). 99% of their stuff comes from China. 75% of that is considered a disposable, one time use tool. Granted - they're stepping up their game finally and bringing in better stuff but their electronics are still from China and still mostly junk. Basic world trade economics, manufacture subpar products to offer a lower bulk price to other countries to compete with local companies while making better products within your own country for your citizens
@PaulHathawayRetired
@PaulHathawayRetired 5 жыл бұрын
CR6247 Chip Features: CR6247 is built-in 600V high-voltage power MOSFET, flyback original edge control PWM power switch; Built-in soft start, reduce the stress of MOSFET, built-in slope compensation circuit; It has the function of frequency jitter, which makes it have good EMI characteristics. Multi-mode controlled energy efficiency equalization technology, low standby high efficiency to meet energy efficiency requirements; With "soft start, OCP, SCP, OTP, OVP automatic recovery and other protection functions;" Simple circuit structure, less peripheral components, suitable for small power AC/DC power adapter, charging Manager
@Robothut
@Robothut 6 жыл бұрын
Wow that is a lot of good electronics for the money! Great job Clive.
@neiltheplayer
@neiltheplayer 4 жыл бұрын
the stack of 4 resistors is labeled R10 R9 R8 and C4, so there is that capacitor in circuit
@ChrisTheHulk
@ChrisTheHulk 5 жыл бұрын
Thanks Clive :) Seen them in Poundland for a little while but debated whether I should get one. Think the answer is now yes :)
@user-lr4id9pf8y
@user-lr4id9pf8y 6 жыл бұрын
you're the best. i love learning what i can from your videos. thank you.
@zr0dfx
@zr0dfx 6 жыл бұрын
Picked up a nice red one today! Cheers Clive!
@fiskrond9212
@fiskrond9212 4 жыл бұрын
01:05 going forward..... spits lager over keyboard and screen.... a brilliantly aside..!! Those who have bought from the outlets mentioned (also B&M) will appreciate the humour. Bringing a bit of sharp wit to electronics.... Subscribed!!
@lewietechnics9943
@lewietechnics9943 5 жыл бұрын
They are £2 from Poundland, I bought a few of them, great very informative video.
@bluephreakr
@bluephreakr 6 жыл бұрын
Unboxings with Big Clive become rather violent, per usual. Entertaining as always,
@louislectric
@louislectric 5 жыл бұрын
As always, so informative.
@Tommyinoz1971
@Tommyinoz1971 6 жыл бұрын
I opened up a USB PSU on the weekend that also had a very similar looking diode that also got quite hot. But the good news it they put a electrolytic capacitor across the top of it which was acting as a heat sink. The capacitor was looking a bit swollen, but it was doing an excellent job conducting the heat away from the diode.
@dagnam189
@dagnam189 6 жыл бұрын
Thank you clive, a trip to poundland tomorrow. :)
@simonclark8290
@simonclark8290 6 ай бұрын
Poundland probably owe you £10K for all the goodwill and sales this video will have created 🙂
@chrisjacksonuk
@chrisjacksonuk 6 жыл бұрын
This is excellent, so detailed....Thanks Clive 👍🏿👊🏿
@umbrefawx
@umbrefawx 6 жыл бұрын
hey clive, I have one of them variable load testers, pretty much the same one but its a revision. They now make them with the tester displays built in. best part is, it also has both watt hr measurements and input resistance. Mines got got pretty much every usb port from mini to type c reverisble, even has an apple thunderbolt connector. only paid 8 bucks for mine. (little under 6 pounds for you folk.)
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