Тёмный

Deadly LED lamps from China on ebay. 

bigclivedotcom
Подписаться 1,1 млн
Просмотров 141 тыс.
50% 1

Just a couple of the wide range of LED lamps openly sold on ebay that have deliberately exposed solder connections directly referenced to the mains supply. Both lamps in this video have the potential to cause a serious electric shock.
Since I'm getting quite a lot of comments from people who are trying to imply these lamps are not dangerous at all (presumably sellers) here's a link to aintbig's video showing how much current can flow when the exposed solder connections are touched. • Dangerous LED "corn co...

Опубликовано:

 

11 сен 2024

Поделиться:

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист
Посмотреть позже
Комментарии : 177   
@B-laze_Fungist
@B-laze_Fungist 8 лет назад
i bought quite a few of LED's from china. Good thing is that some of them are actually incredible bright. The bad thing is that ive gotten minor shocks while touching them, aswell as a few of them exploding (not literally), and most of them went darkish, brown color exterior after a while because the circuit just burnt up. The only light i keep using that havent failed in almost two years is a Tube light which has a pretty bright led stripe inside. Followed a wiring guide online connecting it to 230v. still works, no smell, no failures.
@ifitistobeitisuptome
@ifitistobeitisuptome 9 лет назад
I used to wonder why I could never find these bulbs in my local B&Q store, yet they were advertised all over the internet??? I now know the reason B&Q do not stock them! BECAUSE THEY'RE DANGEROUS SHITE!!!!
@mysterioussquirrel4456
@mysterioussquirrel4456 8 лет назад
Amazing. A blanket ban on legal highs with a risk of 7 years in prison. Dangerous electrical products for sale in the UK and no one bats an eyelid.
@gavincurtis
@gavincurtis 9 лет назад
No UL or CE required here. There was a time when electronics required certification. But apparently that doesn't matter with free trade of shitty imported goods.
@GeneralSeptem
@GeneralSeptem 10 лет назад
To answer your question, no, this isn't really standard in China. Importers on eBay give international consumers what they want - really cheap shit at a 500% markup. We're all used to things costing a certain price because labor costs are so high in America and Europe - education and food are so expensive that they have to be. Importers can make a fortune off of China's relatively low cost of living and the low expectations of the rest of the world. They commission the absolute cheapest products they can manufacture and then sell it to unsuspecting people over the internet for prices the Chinese wouldn't even pay for the good stuff. I guess you can blame their lack of safety standards, but in all honesty China doesn't need safety standards because nobody there is stupid enough to buy things like this and try to use them. I was shocked to find this out, but the "made in China" stuff that actually gets sold in China is really good. But you pretty much have to be able to read Chinese to have access to it. It's kind of funny, China being the last bastion of Communism, yet in reality championing even the coldest bits of the free market. It's really a fascinating case study.
@phils4634
@phils4634 7 лет назад
I've bought Chinese metrology instruments and they are VERY good INDEED. I have a Chinese colleague who regularly visits family (Parents and In-Laws) in Shenzen (the home of their microelectronics boom), and I get the stuff their Industry uses - very good quality for a very good price. As for the non-electronic stuff (calipers, micrometers) they have always been more than good enough for the serious hobbyist, and usually for an excellent price.
@GeneralSeptem
@GeneralSeptem 7 лет назад
I will say this, I did see a few death adapters in Shenzhen, the kind where you can plug the ground pin right into the hot. The family had kids, I warned them of the danger and they got new ones. They don't use British sockets in the rest of China, so not a huge issue... mostly they're careful enough that it's never an issue really. We enable a LOT of stupidity by putting warning labels on things...
@phils4634
@phils4634 7 лет назад
I fully agree that their budget-end "Death-Dapters" (TM Clive!) are "not particularly safe" ;-) but their industrial electronics are a different deal entirely. My colleague's Father in Law is pretty high-up in Uni-Trend Corp., and he always brings back some of their "seconds" for a very good price - not electrical seconds, rather cosmetically imperfect (odd stains, minor scuffs, that sort of thing).
@BigClive
@BigClive 11 лет назад
Nope. The standard pendant lamp holder in the UK is the bayonet cap socket. But many table lights have either ES (Edison Screw) or SES (Small Edison Screw) holders.
@EastyUK
@EastyUK 7 лет назад
You should create like a fatality circuit mate. Where you short products and if the current is high enough to kill some one it lights a bulb or melts a wire. basically we need more fire in your videos. :)
@claveworks
@claveworks 8 лет назад
Good warning again, thank you. Having had a good belt of 240V in my youth, it's not something I want to repeat!
@jurgoSTI
@jurgoSTI 10 лет назад
i love how he's like im not gonna crack it open just y..... you know what fuckit im opening it.
@OhShitSeriously
@OhShitSeriously 7 лет назад
Those multibit screwdrivers you get at Poundland are great! I bought three at Micro Center the other day - one for my satchel, two for my desk - and they've already been coming in super handy. They can exchange bits with all my other cheap mini-driver sets, too! I wouldn't have looked twice at these guys if I hadn't seen you getting such mileage out of them. So thanks for that!
@saalkz.a.9715
@saalkz.a.9715 5 лет назад
"... hold on... let's use the Force..." 😂
@grayanderson6840
@grayanderson6840 7 лет назад
Hi Clive, I actually purchased 2 of the golf ball type bulbs for £5.99 each. They lasted all of a month before they went with a pop and almost together too. One on one day and the other the day after. I opened them up but would love to send you some pictures if possible for your photo album :-) The circuit boards made me smile as it looks like they have been cut from a very old circuit board and just the part they needed for the job. I have since used small circuit boards of my own to repair them and working fine now.
@jerryg50
@jerryg50 7 лет назад
I only buy lamps locally at a supplier where they have lamps marked UL and CSA approved for Canada and the US. The lamps I buy have a clear acrylic clear insulated window on the top of them for safety. Most of the lamps selling over here are made in China, or Mexico, or Malaysia. I would guess there are factories in these countries that are making cheaper versions for sale on the net, or wherever they can get away with selling them. I have opened a lamp to see inside since I have seen videos about some of these lamps being dangerous. The ones I opened are using an isolated switching supply inside.
@apolo90
@apolo90 10 лет назад
Ok, You are right, but I´ve something to tell about it. The first one: You can screw it in without touching any electric connection, just by screwing it holding the borders. Is unusual to see that kind of bulbs, they are the cheaper ones, a little most expensive bulb has a security ring to avoid the LED circuit sepparate from the cover. You are right when saying that is very unusual to see these open electrical connections, but, can´t it be solved by putting on it some non-conductive paste or something like that? I´ve touched these LEDs when they are turned on and they defintely don´t get hot or even warm, and hadn´t any electric shock untill today. >>The second one: Is again the cheaper one, these kind of bulbs come with a glass protective cover, these ones are suitable for tinny headlamps or desklamps, and shouldn´t be used near places where kids can touch them. One of the advantages of these SMD light bulbs is that the soldering is all under the main circuit board and is almost impossible to touch them, but the electric supply is very touchable. You just have to be a very unlucky man to do it, but, again, if you put a llittle dot of silicone (is non conductive and may work as an insulating cover for these soldering dots), won´t this solve your safety problem? At least in the second bulb you juste realized that is practically impossible to touch all the main circuit components without breaking it´s cover...
@BigClive
@BigClive 10 лет назад
You could walk up to a wire you knew was live at full mains voltage and touch it, and NOT get an electric shock. Electricity needs to flow through your body to give an electric shock, and if you are isolated from a return path then it has nowhere to go and no significant current will flow. HOWEVER. If you touch the same wire and you are making ANY contact with a grounded surface like a damp floor or wall, or worse - actually touching something that is well grounded then you could pass enough current to kill you. With these exposed solder connections you are randomly touching a path to a live feed with no knowledge of how much current can potentially flow. It's like Russian roulette. You may feel nothing, get a tingle, get a strong shock or your heart may be put into a state of ventricular fibrillation resulting in a high likelihood of death. It's really no good saying "I touched it and it was OK" since the next person to touch it may get a fatal shock. Even with recessed solder connections, if your finger makes even a tiny contact area then you become part of a circuit. With the number of these lamps flooding the market it's only a matter of time before a death occurs and manslaughter charges get involved for selling dangerous goods.
@billiemfan
@billiemfan 10 лет назад
bigclivedotcom Thank you for the warning and exposure to something potentially fatal. pun intended. I'm praying some of the trolls on your posts don't have children. They obviously care more about saving a few pennies than they do about the safety of their families. I'm a retired electronic technician who worked both in low voltage electronics and also with very high voltages at a power company. I agree with everything you have stated and warned about. I appreciate people who take the time to give others a warning when something is this dangerous. Thanks again.
@JC-wk7wv
@JC-wk7wv 8 лет назад
When handling light bulbs for safety reasons: 1) Check to make sure the light switch is in the OFF position prior to changing a light bulb, incandescent, fluorescent or LED bulbs. 2) When the bulb is ON, do not touch it. A incandescent or fluorescent may be hot enough to cause burns, while a LED bulb without a cover, as indicated here, can give one a nasty shock.
@BritishRail60062
@BritishRail60062 8 лет назад
Cheap shit with a guaranteed death trap. I always buy British or German if I can. I know it cost a bit more than this cheap shit but I would rather pay a bit more for a safe product than risk a fatal shock from these things they have the cheek to call LED lamps.
@xldkxnewyorker8914
@xldkxnewyorker8914 8 лет назад
Thankfully, short of shopping at corner stores, you don't really see this shit on American shelves. I can't imagine how I'd feel if I ever saw these on shelves. Granted Wal-Mart shit isn't built much better, but at least it's not likely to kill you.
@Squall762
@Squall762 10 лет назад
I understand where you're attempting to go with this, and yes in a worst case scenario, you would possibly end up dead, but in 99.9% of circumstances, there isn't anymore than a few volts running to the main LED board. However it isn't common practice to install any kind of bulb while the circuit is live, especially with B22's as they have a chance of shorting out over the two contact points on the bulb. If I had a choice, I'd get the LED's that have covers, however there are certain bulbs that you cannot buy with covers over them, particularly the new COB LED's, which encompass 3520, 5050 and 5630 SMD LED's.
@BigClive
@BigClive 10 лет назад
There may be only a few volts across the LEDs, but the supply is referenced to the mains and you can get full mains voltage referenced to ground like if you touched a grounded light fitting while changing the lamp or did it from a metal ladder. You can't always know for sure if two-way lighting is on or off when you change a dead lamp. A child doesn't consider "safety" when it touches its bedside light.
@Squall762
@Squall762 10 лет назад
bigclivedotcom I suppose it's better to be safe than sorry, especially when .065 amps is enough to kill you. I do agree with those two way switch setups and as far as child safe bulbs, but in saying that I would state that LED's with a protective coating over the diodes is really the only option that is child safe as Halogen get very hot very quickly, CFL's contain mercury and are very fragile.
@josephgilliand5190
@josephgilliand5190 9 лет назад
Assuming the nearly brain dead intelligence of the average consumer, it does seem odd that high voltage connections which can easily be touched would be on mass produced consumer products. Even odder still is that with millions of these things in use all over world, I haven't heard of a single accident or even mention of a "shocking" experience, involving them. Have you?
@SianaGearz
@SianaGearz 9 лет назад
joseph gilliand Keep in mind that no major store will carry them in Europe/US/Canada/Australia, and the importers make themselves liable and could end up in jail.
@benttt12
@benttt12 8 лет назад
+joseph gilliand Pretty dumb statement, Where would such "Accidents" be reported and known by the public? BadLEDLightAccidents.com? Lots of things are happening in the world most don't know about or read about, This would be one of them. Like where do you really expect to see all of this information? Waiting for BBC to do a documentary would only be your chance to see anything talked about in regards to this issue. The fact you cannot see this notion or be aware enough to know this shows your not very smart Bud..
@micahnightwolf
@micahnightwolf 7 лет назад
That's the thing about capacitive droppers. They're good enough to lower the output voltage to a level tolerable by the LEDs, but they can mislead unsuspecting people into believing that they are 100% safe. The voltage between the poles of each LED is about +/- 3v, which by itself is safe to touch. But the voltage between one of those poles and, say, your metal step ladder, for example, could be 120/240 V. Ouchies.
@ThatGuy-nv2wo
@ThatGuy-nv2wo 7 лет назад
Tingles
@ChrisFlegg
@ChrisFlegg 10 лет назад
Can i get a lil bit of advice if you dont mind? I received an LED Corn bulb yesterday from China, like the one you show at 3 mins. All was fine and bright, then i go back to the lamp after 30 mins and it had blown. The inside smelled really bad of that burning plastic kinda smell, and had a bit of smoke damage to it. I was ok with that, i suppose you get what you pay for, but the light is less than 2 feet away from my mothers flammable Oxygen machines, and had the potential to really do some damage to us and the rest of the house! I havent spoken to the company yet, i have used them a lot of times in the past and have never had cause to complain, but this has put the fear of God into me! Would you go direct to the retailer, or could you kick off elsewhere like trading standards in regards to the risks? Any advice would be appreciated. Thanks
@1marcelfilms
@1marcelfilms 9 лет назад
They now come with a plastic cover these days, but what about fire hazards?
@mikecummings7054
@mikecummings7054 3 года назад
Excellent video Clive as this makes folk aware of the dangers, even more so now with money being tight so people turn to cheap Chinese electronics, harsh as it sounds pay that little extra to get something safe an that lasts longer. A typical G10 bulb has a glass cover on the front an is sealed. I'm astounded with this Chinese bulb how dangerous it can be plus no cover over the front.
@BigClive
@BigClive 3 года назад
They're still selling stuff like this many years later.
@edenfrawley9247
@edenfrawley9247 9 лет назад
Was it from dele-led-factory ? They scammed me
@rogparsons5215
@rogparsons5215 8 лет назад
In my day (retired a few years) the UK and as far as I know firms like Toshiba never ever used capacitor mains droppers as they were considered, even in the 1960 /80s even if well made, to be liable to failure (o/s) or even fire in a set (short) even though Tosh added safety features - of cause TVs were not grounded/earthed in UK /Auss. However the mains transformer input winding was strictly isolated . RBT were very proud of their safety record - but thats Japanese .....
@Sine1040
@Sine1040 11 лет назад
Shocking ...
@harobles2
@harobles2 2 года назад
This is why the United States uses 120 volts instead of 240 volts in all small appliances and lighting devices. It is a lot less dangerous and harder to get life threatening shocks.
@GaryKildall
@GaryKildall 8 лет назад
They can also emit dangerous Ultra Violet light.
@dakipro
@dakipro 8 лет назад
thank you for the review, I did watch several of your vidios (was looking for a soldering iron and ikea charger) and I find them very very usefull. I was wondering, since you review so much items, could you maybe make a playlist with reviews that you actually "approve", or items that are at least not deadly? Thanks, keep up the good work!
@1995epicfail
@1995epicfail 8 лет назад
on the last one, it is possible to touch the live side of the capacitor... therefore even more deadly.
@yogasaja8942
@yogasaja8942 8 лет назад
i bought from ebay and still using it. And yes, little bit scary when screw this lamp. Using plastic bag to ensure that no direct contact between electric part and your hands. fortunately, i am using it for garden lamp, so not so much direct contact after installed it.
@kentsmith7507
@kentsmith7507 9 лет назад
I bought a few of those cob lamps but they have clear plastic covers on over the LEDs, so you can't touch them. Maybe you bought the non retail product meant so you could stick your own decorative cover on and sell them? Or maybe they killed someone and changed the design. :)
@had2galsinthebooth
@had2galsinthebooth 9 лет назад
As long as it is designed well and there is no overheating in the confined space then the covered ones should be far better/safer. Not only that but everything collects dust. Which type is easier for the average user to wipe clean? If you guessed the covered one then you get a gold star outlined in platinum. I'm not sure where you get it from though cause I'm not giving mine away so easily. I use my compressor to clean two old double density strips. The waterproof ones would have been easy to simply wipe off and it wouldn't kick any dust back into the air.
@mickeythompson9537
@mickeythompson9537 9 лет назад
You make a good point - even those of us taught to turn the switch to off before we change a light bulb, might have reached up to brush some dust off these lamps when on: resulting in contact with the dangerous current.
@apolo90
@apolo90 10 лет назад
Ok, as you can see, it seems to be unprobable to get an electric shock with this led bulbs. Paying a little more for this accessories could lead to have a safer illumination.
@BigClive
@BigClive 10 лет назад
No I don't think it's "unprobable" at all. In fact the only people who would imply that it was not dangerous would be those selling this deadly junk. But it's certainly worth paying the small amount more to have the version with an outer protective cover.
@BigClive
@BigClive 10 лет назад
Here's a link to show just how much current can flow. Keep in mind that even a few milliamps is painful, 16mA causes muscle contraction and 30mA and up is potentially fatal. Dangerous LED "corn cob" lamp test and teardown
@thany3
@thany3 9 лет назад
So it doesn't matter if it's low voltage, you're going to get a deadly shock anyway? That's a scary thought actually... I've seen USB chargers with a capacitive dropper inside them. Now it feels like they are just pumping death into my devices :)
@ilanbinkovitch6054
@ilanbinkovitch6054 7 лет назад
what can be done to make them safe ? personally, i got the tools but lack knowledge
@jayparr1729
@jayparr1729 8 лет назад
I bought some of these on eBay, and after a few hours the glue that holds them together melted then the bulbs blew up. I only buy named brands now.
@jusb1066
@jusb1066 10 лет назад
i bought one the same with BC connector, they arnt even bright! the 5w one was dimmer than the 3w quality one i found, and it was only around half the price, it seems there is a point where you cant make a decent bulb for the money, this is where they need to find a way to make sure these are tested
@BigClive
@BigClive 10 лет назад
The wattage ratings are all pie-in-the-sky. Some rated 3 or 5W are actually less than a watt. The difference between a dangerous lamp and a safe one is just a plastic cover. They sell the lamps with the covers and without. I just don't understand why they leave the covers off some.
@dhelms4382
@dhelms4382 10 лет назад
That small wire will not transfer 240 volts. I doubt you would get much of a shock if any at all.
@BigClive
@BigClive 10 лет назад
It takes less than 100mA (0.1A) to kill a human outright. Even a wire whisker thinner than a human hair will easily pass that current.
@johnharry7379
@johnharry7379 10 лет назад
I had 150mA shock before all it gave me was a hard on.
@luisrosado6677
@luisrosado6677 4 года назад
The ones I bought in 2017,are still going;no problem at all.
@jfn412
@jfn412 7 лет назад
are you reporting to ebay to stop junk sellers.
@SagePatrynXX
@SagePatrynXX 7 лет назад
lots of things end up unsafe for kids. My favourite (not) Light switches. without the cover that goes around the wall switch. Sigh. you know if you put your finger in the gap and your a kid, it won't turn out well. (was at a reunion of a sort (retirement party that ironically really wasn't one but his daughter didn't know that. :O So meeting people I hadn't seen in 24-25 years when they were like 13-14 yrs old ) and she's like 4-5 years younger than me but she had this farming style warehouse that held the party and it had a bathroom and alas no cover over the wall switch. Now I don't have a cover over my wall outlet but there's a reason for that. 1. I plan to switch the RUSTY outlet 2. It's rusty and I really not sure if I wanna find out what that does to copper wires. (it's along the bad wall that tends to get a bit wet during the winter :( But we don't have kids around. If there were I'd put a cover back on it. But the reunion there were kids a go go. And I sorta brought this up and ended up blocked on FB for it. sigh. Bit annoying when one points out a danger and they don't like being told about it. :( Don't have a problem with her dad and older brother as far as chatting just uncovered wall light switch. blocked. :( Safety first...
@rehobothprayerhousefrimley
@rehobothprayerhousefrimley 10 лет назад
I also bought this bulb last month and its working good and let you remind that I touch the bulb while its on by mistake and I didnt get any shock it is jusst 6 v if it is danger then I think every mobile charger is dangerous too didnt you touch the mobile charger very end in the metal which is 5 v I think and ho about 12 volt adapter didnt you touch it..
@BigClive
@BigClive 10 лет назад
Nope. If you have a good path to ground like an earthed metal light fitting and you touch the right bit you will pass enough current to be electrocuted. The mobile chargers are supposed to be an isolated 5V supply with no direct connection to the main supply.
@rehobothprayerhousefrimley
@rehobothprayerhousefrimley 10 лет назад
It might be right but at home think all the floor is cover with blanket so how can I or any one get earth ? To get the shock I have to go out in the garden and change it without wearing anu slipers or boot
@BigClive
@BigClive 10 лет назад
John Rai An earthed light fitting? Up an aluminium ladder outdoors? Holding an earthed appliance or even just leaning against a pipe? You're trying to justify a potentially fatal product.
@rehobothprayerhousefrimley
@rehobothprayerhousefrimley 10 лет назад
Ok I gave up thank you mate
@SharpArizona
@SharpArizona 10 лет назад
I have definitely been shocked by the second one. Worst decision of my life.
@BigClive
@BigClive 10 лет назад
Sadly this is the way things are going these days. The moral of the story is that you should treat all cheap electrical stuff as being potentially able to give a shock. Sadly that even includes things that really shouldn't be able to do that, like phone chargers. The isolation between the mains voltage and the 5V output is sometimes little more than a thin layer of lacquer.
@waqasahmed939
@waqasahmed939 9 лет назад
bigclivedotcom And this is why I now buy "Anker" USB cables or other branded USB cables, which arent majorly more expensive than unbranded.
@Digmen1
@Digmen1 8 лет назад
HI I really enjoy your turn of phrase. Very interesting videos.
@rogerbrandt6678
@rogerbrandt6678 9 лет назад
Hi Clive, from Canada here, in your other videos u have a machine the measures volts, what I'd that machine called.? Tia
@gork42
@gork42 9 лет назад
AC line meters like that are sold under various names one popular here in the U.S. Is the "kill-a-watt". A meter to measure/probe voltages is called a voltmeter, but typically they are sold with other functions as a multimeter.
@omni96
@omni96 10 лет назад
I have one with a similar design But it's covered with a plastic dome Is it safer? Can I leave it on for a long duration?
@BigClive
@BigClive 10 лет назад
If it's got the plastic cover then it's safe against touch. It should be fine for leaving on for long periods of time as most of these lamps are fairly low power.
@ChrisFlegg
@ChrisFlegg 10 лет назад
I had a plastic cover on mine, it blew out leaving smoke in the bulb and could of been much worse due to its location
@hermit3400
@hermit3400 8 лет назад
Thank-you for the warning!
@markbaron13
@markbaron13 9 лет назад
I got a good belt off one of the cheap ebay LED globes. Even when the power was off, I had the capacitor discharge into me when I made contact with the solder points
@Xenro66
@Xenro66 9 лет назад
Mark Baron Ouch... These things should have a bleeder circuit in them :/
@markbaron13
@markbaron13 9 лет назад
Your not wrong
8 лет назад
+Mark Baron But you are, *you're
@georgemalakasis3846
@georgemalakasis3846 6 лет назад
There are safety rules about handling light bulbs ! First you turn electricity off and after replace the bulb ! At the same time, you use the appropriate lamp for every situation ! Rest is just crap !!!
@crocellian2972
@crocellian2972 7 лет назад
I admire your work. I reviewed every single WorkSafe report from BC. No report within KM a of this theory. If facts don't fit ...
@mrstanskaggs1
@mrstanskaggs1 9 лет назад
The contacts of the bulb are DC level voltage.. This is like a battery in a car, although I can see there being some residual sine-wave residue after the capacitor filtering. This is the same as a AC-DC transformer for home appliance (black brick) which powers many home items.. do not open and stick your fingers in it and do not saw open the black bricks.. same concept.
@BigClive
@BigClive 9 лет назад
Nope. It is DC, but it's directly referenced to the mains supply. Like the car battery you mentioned with one of its terminals connected to a live mains wire. It's still just a low DC voltage across the battery terminals (and across the LEDs) but if you touch either terminal of that now-live battery then it will deliver a full mains shock to ground.
@mrstanskaggs1
@mrstanskaggs1 9 лет назад
That is true if you touch the wiring on the AC side of the circuit or possibly if the rectifier shorts out, allowing the AC sine-wave to project into the secondary side of the circuit. The side you would touch is still a DC voltage basically. The DC side of the circuit does not reference the AC side since it is isolated by the bridge rectifier. There might be a little ripple if the caps and diode array in the rectifier are not sufficient. The result is DC at roughly 70% of the AC potential unless it is attenuated on the DC side. Saying the LED side can shock you is equal to a power supply such as what drives a router or transister radio power supply (black brick AC-DC converter transformer). AC at 110VAC = 77.7VDC fully rectified. DC is DC and any AC on the LED will instantly destroy the LEDs since their reverse voltage in measured in milivolts.
@BigClive
@BigClive 9 лет назад
Stan Skaggs Firstly. If your voltage is 110V AC then that is the average value of the sinewave. What's known as the RMS (Root Mean Square) value. When rectified and smoothed, the smoothing capacitor will be charged to the peak sine voltage which is calculated by multiplying the RMS value by 1.414 giving a DC voltage of 155V on a 110V supply (340V DC on our 240V supply.). But in reality, because the current is being limited to a series string of LEDs the actual DC voltage in the lamp will be approximately the number of LED chips in series multiplied by 3V. However. Even if you had a single LED and therefore a DC voltage of just 3V, touching the LEDs connections would raise your body voltage to the full mains voltage via the rectifier. Or to put it in a simpler way. It would be like holding one end of a diode and sticking the other end into a live socket. If your body was referenced to ground then current would flow and if it was a good ground like an earthed light fitting then the current could potentially be fatal.
@MrBugsier5
@MrBugsier5 9 лет назад
***** no he is not! even after passing the rectIfier the voltage to ground wil be mains voltage or even more (as he explained before!,)HE IS CORRECT! please educate yourself in this before you replay with your dangerois asumptions.
@MrBugsier5
@MrBugsier5 9 лет назад
my mistake! lol
@erikgallimore5131
@erikgallimore5131 8 лет назад
I imagine a house filled with desoldered parts / superglued devices as far as the eye can see. :)
@thefpsgamer9953
@thefpsgamer9953 10 лет назад
Shocking. literally
@nerdium2657
@nerdium2657 9 лет назад
Hey Clive, I bet the German Government watches your videos, we just had a warning about cheapo LED lamps. Keep up the good work, I always enjoy new uploads!
@djohnnineonesix820
@djohnnineonesix820 9 лет назад
Did you check how much was the voltage at the LED pins or you just assuming that is high voltage cause they screw right into the bulb socket, the feeling of 40v DC over 7 ampers (7000Ma) is just barely noticed in your hand, I know cause I built my own amplifier with a STK439 and I had to build a good power source, That little Integrated circuit looks to me like a switching voltage regulator, Now on days things uses less components cause IC's comes more complete and efficient than on the past... Make a good research including multimeters and more equipment than a screw driver... Thanks
@mickeythompson9537
@mickeythompson9537 9 лет назад
No - it's a bridge rectifier not a switching regulator. You think this is safe? Do as another comment suggests - poke around in your mains socket with a diode.
@djohnnineonesix820
@djohnnineonesix820 9 лет назад
Lol
@djohnnineonesix820
@djohnnineonesix820 9 лет назад
Whatever dude just learn some electronics before you be talking about on RU-vid cuzz
@djohnnineonesix820
@djohnnineonesix820 9 лет назад
And if you don't like comments on your videos make'em private cuzz
@djohnnineonesix820
@djohnnineonesix820 9 лет назад
Bridge rectifier LOL!!?? when a led just need half wave rectifier to work, Now on this days it can be a rectifier and a switching voltage regulator in a single capsule... And assuming things in a video is just not proper
@BlackSuneEmpire
@BlackSuneEmpire 9 лет назад
What did we all learn here today? You get what you pay for (especially when made in china) and don't plug things in with the power switched on?
@nrich5127
@nrich5127 10 лет назад
If you touch an incandecent bulb after it has been on for 15 seconds you will burn your fingers so why would you be touching an LED bulb. A light should always be OFF when changing any bulb so I don't really see the problem. A light bulb is not a toy to be played with and is usuallyout of range of children.
@BigClive
@BigClive 10 лет назад
LED lamps do not get very hot and are therefore very touchable by children. If they touched a traditional tungsten lamp they would get hurt by the heat and not do it again. They might not get a second chance if they touch a live connection on one of these lamps. There's also the issue mentioned elsewhere about a pendant light controlled by two or more switching points. How do you know the power to the faulty lamp is on or off before you touch it? One day there's going to be an electrocution, charges of manslaughter and then red tape. All for the sake of a plastic cover that is already supplied on the exact same lamps by other sellers.
@edstar83
@edstar83 10 лет назад
Touching a light bulb whether cold or Ouch fuck! that's hot!, SHOULD NOT RESULT IN DEATH.
@herbertstahl7990
@herbertstahl7990 7 лет назад
neil rich in
@ArtR0001
@ArtR0001 10 лет назад
Do you always place your index finger across the leads of a 400v electrolytic capacitor? Or any capacitor? That simple action shows me that you don't know diddly squat about electrical safety.
@BigClive
@BigClive 10 лет назад
Yes I do, and sometimes I put my genitalia across them too. I guess that 35 years as an electrician has taught me nothing.
@ArtR0001
@ArtR0001 10 лет назад
bigclivedotcom Well, that will certainly let you know that you are still among the living...
@jmanisgreatlastname2058
@jmanisgreatlastname2058 8 лет назад
These should be a weapon in the new Hitman game.
@johnharry7379
@johnharry7379 10 лет назад
Someone fitting a bulb when it live is dumb. I don`t know of anyone that goes round touching live light bulbs when they are on.
@johnthefactfddict3281
@johnthefactfddict3281 Год назад
natural tingletron oh even clivges og videos are pretty good
@hughsgarbagetrucks
@hughsgarbagetrucks 3 года назад
Explodes at 50hz
@riottaba
@riottaba 9 лет назад
Mil amps? milliamps surely?
@mickeythompson9537
@mickeythompson9537 9 лет назад
Most engineers - and builders - that I know use the contraction 'mil, not 'mili'.
@guguigugu
@guguigugu 10 лет назад
flip the switch before touching anything electrical, including light fixtures.
@nathandance7429
@nathandance7429 10 лет назад
how can to you tell with 2 way (3-way in US) switches?
@BigClive
@BigClive 10 лет назад
nathan dance You can't. Just treat any Chinese lamp as live.
@nor4277
@nor4277 9 лет назад
I guess china doesnt have u.l. to test their saftey,but to be sold here they would have go through underwriters labatory testing,i glad we have that.
@SianaGearz
@SianaGearz 9 лет назад
Ron Thompson China has very strict safety standards since 2006 and mandatory certification, and at least on paper they had inherited and enhanced the very decent Soviet standards before that. I'm quite positive that this wouldn't be permitted in Chinese retail. Chances are, these items are only allowed to be produced for export, or as components to assemblies the safety of which will be guaranteed in another manner. But certainly not for export to the first world countries, because the importer makes himself liable if the items he imports are not to the country's standard.
@pittyman
@pittyman 2 года назад
Yoda will be happy with you
@alphadonkey4545
@alphadonkey4545 8 лет назад
I got same bulbs like the second one. Mine got a plastic covering acting as a glass. Other than that, these bulbs are full of shit.
@durgut81
@durgut81 9 лет назад
China have three classes! First, second and third!I have a company and ordering from the Chine LED program first class!Of course there is a risk of electric shock.Must be visited fairs in China and do not buy on Ebay.
@dalewhitmore143
@dalewhitmore143 9 лет назад
Yep speical alright mine stay on when there off!
@BigClive
@BigClive 9 лет назад
Dale Whitmore That's actually covered in another video, jokingly referred to as overunity. It's common in the LED lamps if they have super simple circuitry with no smoothing and are missing a resistor (usually 470,000 ohm to 1Mohm)to shunt leakage current on the mains wiring. It's caused by AC leakage between the switch wires and a small element of insulation leakage too. If your light switches have any active circuitry in them like a dimmer, remote control switch or even just a neon or LED that makes the switch plate glow in the dark, then the LED lamps will be quite bright with the higher leakage current used by the switch.
@dalewhitmore143
@dalewhitmore143 9 лет назад
Ahh thanks for that always wondered why they do it. Those china things really are not safe one bloke on here has called in the standards mob. I guess it does not help that innocent person with no idea, but whats to say china standards say its ok. Than there standard is exported to us with what we call a MAJOR defective lamp. So really is it us or them, I know some importers are just as dodgy as them but if you but directly from them than I guess its expected. Thow they do lie through there peggy teeth to sell a $2 item lol. $2 is worth some ones life I don't now how but I would love to play god for a day and have the karma stick handy. but I guess they wouldn't learn anyway. If you ask me anything 240V-110VAC appliance should have nothing at all live to grab unless its a red hot element. toaster, grill ect. Thanks for the video also.
@th3st1g55
@th3st1g55 8 лет назад
IT'S BLOODY DANGEROUS!!! 👎👎👎👎👎😱
@deanagoes2791
@deanagoes2791 7 лет назад
cheap and deadly....
@brentfisher902
@brentfisher902 10 лет назад
In this house we obey the laws of thermodynamics. ONLY, I repeat, ONLY buy LED bulbs from a brick and mortar store within driving distance, I don't mean to sound racist, but if you buy white you have a lower chance of opportunism.
@BigClive
@BigClive 10 лет назад
There are plenty of UK sellers reselling these things. And some already know they are dangerous, but are still selling them either to get rid of stock or because they have convinced themselves it's not an issue. On the other hand... Yes, buying from a big-name store is probably safer, but lacks the variety and novelty options.
@cawag98
@cawag98 9 лет назад
You did sound racist.
@nathandean1687
@nathandean1687 9 лет назад
Brent Fisher but thier buying from guess where? china.
@adrianotorres0203
@adrianotorres0203 9 лет назад
Stop ..stop stupidity it is not made in China..its all about using common sense....
@wvresident7004
@wvresident7004 9 лет назад
Use a meter and test one of the LEDs. It should only be around 1.5v DC which cannot shock a person. The danger is the AC power coming in before the compacter.
@robertgift
@robertgift 9 лет назад
Chinese know to turn off the power before handling the lamps.
@SianaGearz
@SianaGearz 9 лет назад
Robert Gift That won't do them a lot of good unless their switches are exclusively dual pole. I'm not sure you could claim the same about European switches either. Besides, a mistake is easily made. If a light has burned out, it's easy enough to be confused and toggle it on instead of off.
@duenodelustucru
@duenodelustucru 10 лет назад
The overwhelming Chinese industry puts in the hands of the entire world population technological products that other countries would eagrly monopolize. My impression is that your video is motivated by envy.
@BigClive
@BigClive 10 лет назад
No. My video is to try and save people from getting electrocuted by products that have been designed by idiots.
@waqasahmed939
@waqasahmed939 9 лет назад
duenodelustucru My Auraglow bulbs were also made in China. I think theyre probably quite safe... Also, as Chinese workers demand higher wages, companies sometimes make factories within the country they're selling to, using complete automation - no human interaction whatsoever.
@SianaGearz
@SianaGearz 9 лет назад
duenodelustucru There's of course thousands or millions of high quality products manufactured in China, and they too have some of the world's top engineers and facilities, but when proper certification is not applied, we receive crappy dangerous products. These products usually happen to come from China because the liability is harder to nail down, and because Hong Kong worldwide postal services are really cheap. But indeed dangerous crap can come from your own back yard too. It's not about the Chinese, it's about how we can protect ourselves.
@wake-archus
@wake-archus 7 лет назад
inverted commas
@Reburned32
@Reburned32 9 лет назад
Ok. Take mesurment of voltage and show on video how many volts there really are. Stop scaring people. And what mostly you should be focusing is to tell to disconnect power before doing any work on electric installation.
Далее
Эконом такси в твоем городе 😂
00:59
А ВЫ ЛЮБИТЕ ШКОЛУ?? #shorts
00:20
Просмотров 1,9 млн
A Permanent Magnet That Turns On and Off
9:55
Просмотров 2,2 млн
The cheap Chinese bulb that won't turn off
10:27
Просмотров 10 млн
A Look Inside Apple's $130 USB-C Cable
21:52
Просмотров 3,4 млн
The most deadly project on the Internet
15:14
Просмотров 7 млн
The shocking truth about cheap LED "corn cob" lamps
9:39
Why is this Space Telescope so Tiny?
19:42
Просмотров 2 млн
Teardown of a Philips 2W LED GU10 lamp.
7:28
Просмотров 38 тыс.
Scavenging a Poundland vibro-motor
5:42
Просмотров 315 тыс.