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Apple Pledges Investigation After Chinese Woman Reportedly Electrocuted Using a Charging iPhone 5
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i am not a hardware guy but how could a 5v usb2 device kill a lady that easily?
if it really can, all the usb devices are not safe at all.
if it really can, all the usb devices are not safe at all.
China is not a race. China is a country, and it has a terrible record for fraud.
OK, maybe I wrongly inferred parts of your earlier response because you inserted information not part of my original post. However, I never said it didn't happen, I said it was likely a one-off "freak" occurrence, not a flawed product design. It's just not plausible that there are zero other reports of an iPhone shocking a person to death. I mean, hey, the iPhone 4 antenna shorts out and it's the lead story in every city between both Poles for weeks. Certainly loss of life would rank even higher.
It's almost certain that what caused this was either a malfunctioning USB charger, and/or a defect in the supply power going to the charger itself, or even a problem with the structure the girl was in. (electrified surface, incorrect building wiring, ect...)
The designed output of this charger should not be able to cause this - something(s) catastrophically failed.
Nature makes light of death.
Be more nature.
Besides, we musn't worry...
Lightning never strikes twice.
Haha this is funny! I believe its fake. Here are some technical facts:
1. Assuming she was using genuine iPhone with charger. iPhone uses USB like power supply. Max DC current it can provide is 2A @ 5V. According to facts min 5A DC is required to to cause electric shock.
2. Assuming it was fake USB charger connected to a 220V supply and got short circuited. Still she'll get a shock if the charger was connected with regular 4A AC socket. A minimum of 10A AC current is required to electrocute somebody, that usually comes in power supply meant for Air Conditioning / Water Geysers and they have separate sockets. Normal plugs can't be used with it.
3. A faulty capacitor can produce high amount of charge to cause electric shock. But DC devices generally don't need very high rating capacitors, unless you are making an arc reactorironman
Voltage does not kills. It's the current!
Standard plugs in the US are 15 or 20A. An air conditioner runs on a 60A curcut. That means the breaker won't trip until it's feeding 15 or 20 amps. Can easily be enough to kill if you can't get your hands off it or the breaker doesn't trip.
A TV may only DRAW 2-3A, but the plug on the way is hooked into a circuit that can provide enough amps for 5-10 TVs. The TV itself has a step down/resistance built in.
It had to be a faulty adapter and the adapter would have have to fail when she answered the phone. Otherwise the phone would have been long dead after receiving full voltage.
Definition:
Electrocution is death caused by electric shock, either accidental or deliberate.
So it's racist to point out that China is the fount of this most copycat Apple cables etc and they can fool folks into thinking what they have is legit. But those copycats are often shoddy and even dangerous.
Well then call me racist and proud.
But her body would have been wet and potentially standing in water.
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And I believe there was at least one article where it was pointed out that the user had removed the battery, perhaps even replaced it, recently. So a screw could have gotten under it just like the one in Australia. Lit-ion batteries don't like to be punctured
Considering the claims that she was in the shower when or at least just before grabbing the phone, that puddle is very possible.
Oh I know him all too well. I'm annoyed at myself for even replying him. You'd think after multiple times of being timed-out MR would've finally banned him. Just report him each time for foul play and wishes may come true.
"It's the current that kills you" -- yes, but the voltage needs to be present in order to drive current through the body.
"120VAC from the mains can definitely kill you, esp if the breaker fail" -- If you are in a configuration that would allow 120VAC to kill you then that breaker ain't going to do jack to prevent that. Breakers break on >15A and >20A depending on their rating. Takes as low as 10mA through the heart to kill a person. I think you are confusing being shocked with being burned. A lot of current can be arcing and that can burn you but most likely will not shock or electrocute you if the voltage is low. You can draw an arc at really low voltages that pose no shock hazard, but do pose a large burn hazard.
We don't know if she misused the product or not at this stage. That's my point. We don't know so we shouldn't condemn the poor lady. iPhones have exploded and caught fire in the past. We just don't know.
True, current can't exist without a drop. Physically though it's the electron flow (current) that kills
Configuration = you're grounded. And yeah you're right about the breaker. Though if you're grabbed a grounded pipe and couldn't let go because your muscles were firing, the CB trip might save you by keeping your organs from getting fried
Current
Actually it only takes 10-30 milliamperes to get a severe shock. And just 100 milliamperes to kill a human. That's 0.100 Amps. Your outlets in your home can deliver 15 Amps depending on the circuit breaker. The report I read about this said the woman had a burn on her neck. My thought is the charger block malfunctioned and allowed the primary side to contact the USB shield. The woman was wet from the shower so a much better conductor and possibly touching a grounded pipe/facete. Sp. the cable lay against her neck and an arc between the cable and her wet skin. Take a look at the video someone posted a link to it. Shows how cheap and dangerous the knockoffs are. Even the chargers that "look" like the real deal could be counterfeit. It's a huge problem, Chinese counterfeiting that is. Back in the mid 90s there were millions of bad capacitors going into all electronics. I'm still finding them today. Google the capacitor plague or bad electrolytic caps. It's an interesting read.
Also interesting is 100-200 mA will kill you but more than 200 mA usually doesn't kill but will cause severe burns and stop breathing. A person can usually be revived if attended to right away. Check this link for more info. http://www.physics.ohio-state.edu/~p616/safety/fatal_current.html
Haha this is funny! I believe its fake. Here are some technical facts:
1. Assuming she was using genuine iPhone with charger. iPhone uses USB like power supply. Max DC current it can provide is 2A @ 5V. According to facts min 5A DC is required to to cause electric shock.
2. Assuming it was fake USB charger connected to a 220V supply and got short circuited. Still she'll get a shock if the charger was connected with regular 4A AC socket. A minimum of 10A AC current is required to electrocute somebody, that usually comes in power supply meant for Air Conditioning / Water Geysers and they have separate sockets. Normal plugs can't be used with it.
3. A faulty capacitor can produce high amount of charge to cause electric shock. But DC devices generally don't need very high rating capacitors, unless you are making an arc reactor
Voltage does not kills. It's the current!
Actually it only takes 10-30 milliamperes to get a severe shock. And just 100 milliamperes to kill a human. That's 0.100 Amps. Your outlets in your home can deliver 15 Amps depending on the circuit breaker. The report I read about this said the woman had a burn on her neck. My thought is the charger block malfunctioned and allowed the primary side to contact the USB shield. The woman was wet from the shower so a much better conductor and possibly touching a grounded pipe/facete. Sp. the cable lay against her neck and an arc between the cable and her wet skin. Take a look at the video someone posted a link to it. Shows how cheap and dangerous the knockoffs are. Even the chargers that "look" like the real deal could be counterfeit. It's a huge problem, Chinese counterfeiting that is. Back in the mid 90s there were millions of bad capacitors going into all electronics. I'm still finding them today. Google the capacitor plague or bad electrolytic caps. It's an interesting read.
Also interesting is 100-200 mA will kill you but more than 200 mA usually doesn't kill but will cause severe burns and stop breathing. A person can usually be revived if attended to right away. Check this link for more info. http://www.physics.ohio-state.edu/~p616/safety/fatal_current.html
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You don't have to be racist to a "'race". Hitler was racist to Jewish people but they weren't a race, they were people who believed in a certain religion.
Looks like you missed the point.
I answered to a poster who put SAMSUNG into the thread to show that this is an issue that other manufacturers seem to have too.
Since everybody likes to attack Apple for anything without even knowing facts and details and it never gets reported with the same attack style people use for Apple.
They are both. Per the stupid definition of race that attempts to segregate humans. They have a common descent.
That's the term used in my country. In US it's "Electrical Engineering and Computer Science", in Portugal is "Engenharia Electrotécnica e de Computadores", because it's not what we call "electric" engineering.
Zero? An electric arc (aka "spark") in case of thunder doesn't come from a wire, do you know where it comes? Do you realize how big they are to store that kind of energy?
I googled, problem? Anything to do not with overheating?
No.
A transformer (in case of a SMPS, a 1:1 transformer, usually) is connected to the plug.
A transformer isolates two circuits, the connection between the wall outlet and the PCB is made magnetically, that's what a transformer does.
Anyway, the copper wires are so tiny in the transformer, it can't pass much current, because it acts as a fuse.
Doesn't make any sense, sorry.
But that's if you charge a great load of volts and discharge them fast.
A capacitor that size even won't fit inside a iPhone charger.
Thanks for the info.
Power(W) = tension(V) * current(A)^2
I'm containing myself to don't call you stupid.
That's nice. Pics or it didn't happen.
A truck battery can't discharge sufficiently fast to have enough power to kill a man. A truck battery won't make an electrical arc because the voltage it's too low. And it's DC.
Thank you caption obvious. Water doesn't do anything unless connects one end to the other end.
Yes, humans aren't perfect conductors, in fact, human skin is a good isolator.
Thanks.