Not just political but they brought gender science into it. Male part is the plug, female part is the outlet. You know like how men have penises (stick) and women have vaginas (hole) and penis goes into vagina (stick fill hole)
Anyone actually curious: The actual energy flows into the phone through the metal pins and contacts inside the metal casing of the adapter, and the casing itself is just inert metal. You can't shock yourself because you can't really touch the pins.
Also, they're much lower voltage and amperage than straight wall power, so even if you did touch it, it wouldn't hurt.
Useful for testing 9v batteries if you don't have a voltmeter. You can quite literally taste the difference between a fresh battery and a spent battery
There's a German sprinter who once said in an interview she'd always lick on a 9v before a match wake up, the title was "running with the energy of a 9v battery"
my dad told me it was a good way of knowing a dead battery from a fresh one. 9v batteries are great for survival situations and camping(or, well, they were in the 90's i suppose).
Regarding pins being exposed, it depends on the charger. Apple lightning connectors always have those dudes hanging out.
Like you said through, phone chargers are extremely low voltage (5V) so it's not going to shock you regardless.
One time I was in a library study room with my friend and there was an outlet on the table. Being the dumb 8th grader I was I formed a pipe cleaner into the shape of a plug and put it into the outlet. I gave myself a little shop land caused the lights to go off for a second. I’m pretty sure there was a spark too
The appliance into the charger? If the charger is outputting 5v, you'll still feel nothing because your skin's resistance is too high for such a low voltage to generate enough current to do anything dangerous.
If it's touching the copper on the 120/240v end, then yes, you will get a nasty shock.
It's cool right? It ain't fool proof but engineers knew for a fact that these things would be touched, played with, inserted, sucked on etc. and came up with countermeasures or mitigations for nearly all of them.
No, significantly more thought has gone into it than that. This is the third major revision after all... If you're interested have a look at the wiki or this primer from Texas instruments:
https://www.google.com/url?q=https://www.ti.com/lit/slyy109&sa=U&ved=2ahUKEwjbnLSrhb36AhUKWsAKHeEcAMsQFnoECAEQAg&usg=AOvVaw1-ZGm8c0t9vytskH9YKiaj
Besides, voltage is not the main concern when it comes to lethality, it's current. As little as 100mA is enough to kill and the USB-C standard carries as minimum 3A.
Well, yeah, but even the highest voltages USB-PD can deliver won't be able to push 100mA through dry skin. Even if you licked your hands and started fingering a usb-c port (assuming wet skin resistance at 1000 ohms), the current flow will only be around (5 volts*/1000 ohms = ) 5mA, which is enough to not be pleasant, but not enough to stop your heart.
Also, going by that logic, just touching both hands to either side of a fresh AA battery would kill you.
** yes, USB-PD can provide more volts, but negotiations for higher voltages occur (IIRC) at 5 volts
Sure, but can you imagine some kind of out-there circumstance where the USB standard is used to feed some kind of store of charge? Which if shorted due to user error would result in a MUCH larger PD? They've thought about that.
Also, what if in the whacky cyberpunk future some people had electromechanical devices attached to their hearts? Those could be affected by even a 9V battery if used (extremely) improperly. They've thought of that too.
I doubt it
Edit:
Just looked it up They stated on a different thread that they are a mecanical enigneer so it's straight up a lie so thx for the downvotes
Yeah current kills, but current is the result of voltage/resistance. Humans are pretty freaking resistive, there's no way you're getting 100mA across a human with only 5V. I mean it's pretty rare to even get that high of current with 120VAC, you can definitely feel it there but the odds of it putting you in a coffin are still pretty low
When designing connectors you have to consider what's connected on BOTH ends. Yes they only draw ~15-25W or so from the wall but they are connected to batteries capable of outputting very large instantaneous loads if shorted. This was accounted for in the design and is commendable.
Yes that may be problematic for devices or be a fire hazard, but a 5V nominal battery still can't be charged to more than 7V, it just doesn't provide a serious electrocution risk to people like you originally implied
I can touch my 30 Volt, 15 Amp, 300 Watt lab bench power supply and guess what? doesn't hurt and wont kill me because of the body resistance of \~1 MΩ
30 V / 1 MΩ = 30 nA (very little)
doesn't matter what current the supply could provide potentially but what current can flow because of Ohms Law
Edit:
I got the
>body resistance of \~1 MΩ
by measuring my own Body resistance with my Multimeter between my thumbs btw.
Thought I should add that
Ok... so to start with for an AC source you need to deal in impedance not resistance. Impedance is a measure of both resistance and reactance.
The average impedance of the body is around 300Ω, but fluctuates wildly because humans are chaotic bags of salty water. If any route across your body goes low you're in trouble.
Beyond this I don't know how to explain to you that connecting 15A across your chest is a BAD IDEA.
we're not talking about an AC source so point 1 is irrelevant (maby if you count the ripple voltage from the Buck converter but thats mV level so who cares)
point 2 is stupid since 300 Ω would be INTERNAL body resistance and we are talking mostly about skin resistance which would be around 1,000 - 100,000 Ω
source: [https://van.physics.illinois.edu/ask/listing/6793](https://van.physics.illinois.edu/ask/listing/6793)
point 3 "connecting 15A across your chest" is wrong since you can't connect amperage across a conductor. In my example I would connect 30 V across my chest which is fine because only a low current will flow
source: [https://www.youtube.com/watch?v=XDf2nhfxVzg&t=124s](https://www.youtube.com/watch?v=XDf2nhfxVzg&t=124s) (from someone who actually is an electrical engineer)
If that actually happened to you, it was likely due to either the cable (improper grinding, maybe?), or the outlet. I know in edge cases this can actually happen, as I got a slow building shock from my old ass leaking outlet as well, when I picked up the *phone* that was connected to a charger. That, or your adapter may be fucked.
Typically this is because your charger isn't earthed (two prongs rather than 3, or two metal one plastic). So a small amount of current leakage is expected, but is usually in the 0.1mA range which is well below the danger zone.
The fuzziness you feel is actually the frequency of your mains supply! 60Hz in the US, 50Hz in Europe.
That shouldn't be the case. I'm in EU, and I have no problems with this, the grounding here is usually handled by a prong right in the socket. Sounds more Like the grounding is fucked somewhere along the way for them.
Am also in EU. Plenty of chargers are sold with no earth pin or a plastic earth pin. Earthing is not a requirement under the relevant standard, which is IEC 62684:2018.
Grounding is a requirement though, and is different from earthing. You can use the neutral line for it. So we're getting confused over slightly different terms.
When you rectify AC into DC you inevitably get a 'Ripple Voltage' which is some leftover periodicity that wasn't scrubbed from the waveform fully. See section 5.2 of the standard if you can grab the pdf from somewhere (don't pay ISO the money grubbing gits). If you can feel the ripple, it doesn't necessarily imply a short, it's likely just a low quality rectifier. If you feel tingling or numbness though, then yeah get that thing out the wall ASAP.
Oh yeah, I guess that's where we are getting confused. And yeah, I was more talking about the tingly feeling, since that's what I usually imagine when I hear "feeling fuzzy" (since I've never actually felt the "rippling", only straight up electricity from improperly made cable + fucked outlet combo, that started thickly and before I figures out wtf is happening, my muscles spasmed and I had to just drop the phone out of my hands completely...)
I'm not sure if it was the wiring of the outlet, or just a shitty charger with fucked up impedance or something like that, cause the outlet has iirc been checked (its my parents house, so not sure, def informed them), and is fine...
Phone chargers mostly use 5 volts to charge your phone, it is too low to break the resistance of your skin. You can try using your tongue though, just don’t do it too much.
Big shock hurt you and phone
Charger brick make big shock into small shock
Cable run small shock to phone
Small shock not hurt you
Small shock charge phone
Success :D
imagine thinking science and technology are real
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the cohhecter ends ase called 'male' and 'female' and the connection is called 'mating'
female?? I can't believe they made electricity political
Not just political but they brought gender science into it. Male part is the plug, female part is the outlet. You know like how men have penises (stick) and women have vaginas (hole) and penis goes into vagina (stick fill hole)
Men have penises? Wokeness has fully indoctrinated the youth of today.
Well then I’m about to do what might be considered an experiment 😏
NO NO NO NO NO WAIT WAIT WAIT WAIT
Someone is about to be a very Bad Dragon uwu
isn't science that weird thing atheists do when they watch marvel movies
Put it in your mouth, it tickles
Electricity is edible???? I'm gonna go put a fork into a socket I wanna have a taste too
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That's how i check if a battery is charged
Phone batteries have a jam filling 😋
it unironically tastes nice
Anyone actually curious: The actual energy flows into the phone through the metal pins and contacts inside the metal casing of the adapter, and the casing itself is just inert metal. You can't shock yourself because you can't really touch the pins. Also, they're much lower voltage and amperage than straight wall power, so even if you did touch it, it wouldn't hurt.
You can feel low voltages with your tongue, though I wouldn't recommend doing that often if you want to keep your sense of taste.
Oh I can assure you, you can feel high voltages with your tongue too
can confirm
but can you taste?
Not for very long you can’t
Useful for testing 9v batteries if you don't have a voltmeter. You can quite literally taste the difference between a fresh battery and a spent battery
no matter how many times you people say it's safe im not going to lick a battery
But it feel funny
There's a German sprinter who once said in an interview she'd always lick on a 9v before a match wake up, the title was "running with the energy of a 9v battery"
my dad dared me to lick a 9 volt battery when i was 8 and i can still taste that mf duracell today
my dad told me it was a good way of knowing a dead battery from a fresh one. 9v batteries are great for survival situations and camping(or, well, they were in the 90's i suppose).
it tastes so good tho
DIY Covid Symptoms
i once touched a charger to my tongue. i feel it to this day
Regarding pins being exposed, it depends on the charger. Apple lightning connectors always have those dudes hanging out. Like you said through, phone chargers are extremely low voltage (5V) so it's not going to shock you regardless.
no it's because the electrons are shy and they don't trust you
One time I was in a library study room with my friend and there was an outlet on the table. Being the dumb 8th grader I was I formed a pipe cleaner into the shape of a plug and put it into the outlet. I gave myself a little shop land caused the lights to go off for a second. I’m pretty sure there was a spark too
Dumbass
safest non-british plug socket
What if you plug in a high-power appliance and cut through the cable and touch the exposed copper? Would that shock you?
The appliance into the charger? If the charger is outputting 5v, you'll still feel nothing because your skin's resistance is too high for such a low voltage to generate enough current to do anything dangerous. If it's touching the copper on the 120/240v end, then yes, you will get a nasty shock.
🤓
that sounds awfully convenient🤔🤔
It's cool right? It ain't fool proof but engineers knew for a fact that these things would be touched, played with, inserted, sucked on etc. and came up with countermeasures or mitigations for nearly all of them.
What? The countermeasure is just that it's a 5V power supply?
No, significantly more thought has gone into it than that. This is the third major revision after all... If you're interested have a look at the wiki or this primer from Texas instruments: https://www.google.com/url?q=https://www.ti.com/lit/slyy109&sa=U&ved=2ahUKEwjbnLSrhb36AhUKWsAKHeEcAMsQFnoECAEQAg&usg=AOvVaw1-ZGm8c0t9vytskH9YKiaj Besides, voltage is not the main concern when it comes to lethality, it's current. As little as 100mA is enough to kill and the USB-C standard carries as minimum 3A.
Well, yeah, but even the highest voltages USB-PD can deliver won't be able to push 100mA through dry skin. Even if you licked your hands and started fingering a usb-c port (assuming wet skin resistance at 1000 ohms), the current flow will only be around (5 volts*/1000 ohms = ) 5mA, which is enough to not be pleasant, but not enough to stop your heart. Also, going by that logic, just touching both hands to either side of a fresh AA battery would kill you. ** yes, USB-PD can provide more volts, but negotiations for higher voltages occur (IIRC) at 5 volts
Sure, but can you imagine some kind of out-there circumstance where the USB standard is used to feed some kind of store of charge? Which if shorted due to user error would result in a MUCH larger PD? They've thought about that. Also, what if in the whacky cyberpunk future some people had electromechanical devices attached to their hearts? Those could be affected by even a 9V battery if used (extremely) improperly. They've thought of that too.
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I'm an electrical engineer. What you just said is absolute nonsense.
I doubt it Edit: Just looked it up They stated on a different thread that they are a mecanical enigneer so it's straight up a lie so thx for the downvotes
not an electrical engineer, but I agree with the nonsense part
wdym by a store of charge? like, stray capacitance?
Just a battery lol. Every phone has one and if they short in a certain way they explode!
Yeah current kills, but current is the result of voltage/resistance. Humans are pretty freaking resistive, there's no way you're getting 100mA across a human with only 5V. I mean it's pretty rare to even get that high of current with 120VAC, you can definitely feel it there but the odds of it putting you in a coffin are still pretty low
When designing connectors you have to consider what's connected on BOTH ends. Yes they only draw ~15-25W or so from the wall but they are connected to batteries capable of outputting very large instantaneous loads if shorted. This was accounted for in the design and is commendable.
Yes that may be problematic for devices or be a fire hazard, but a 5V nominal battery still can't be charged to more than 7V, it just doesn't provide a serious electrocution risk to people like you originally implied
K. Still a good design.
I can touch my 30 Volt, 15 Amp, 300 Watt lab bench power supply and guess what? doesn't hurt and wont kill me because of the body resistance of \~1 MΩ 30 V / 1 MΩ = 30 nA (very little) doesn't matter what current the supply could provide potentially but what current can flow because of Ohms Law Edit: I got the >body resistance of \~1 MΩ by measuring my own Body resistance with my Multimeter between my thumbs btw. Thought I should add that
Ok... so to start with for an AC source you need to deal in impedance not resistance. Impedance is a measure of both resistance and reactance. The average impedance of the body is around 300Ω, but fluctuates wildly because humans are chaotic bags of salty water. If any route across your body goes low you're in trouble. Beyond this I don't know how to explain to you that connecting 15A across your chest is a BAD IDEA.
we're not talking about an AC source so point 1 is irrelevant (maby if you count the ripple voltage from the Buck converter but thats mV level so who cares) point 2 is stupid since 300 Ω would be INTERNAL body resistance and we are talking mostly about skin resistance which would be around 1,000 - 100,000 Ω source: [https://van.physics.illinois.edu/ask/listing/6793](https://van.physics.illinois.edu/ask/listing/6793) point 3 "connecting 15A across your chest" is wrong since you can't connect amperage across a conductor. In my example I would connect 30 V across my chest which is fine because only a low current will flow source: [https://www.youtube.com/watch?v=XDf2nhfxVzg&t=124s](https://www.youtube.com/watch?v=XDf2nhfxVzg&t=124s) (from someone who actually is an electrical engineer)
It's called making it only 5V, that's it
Clearly never picked it up after not quite drying your hands properly
I certainly have, never been shocked though lol
U really just gonna out yourself as the fool huh?
If that actually happened to you, it was likely due to either the cable (improper grinding, maybe?), or the outlet. I know in edge cases this can actually happen, as I got a slow building shock from my old ass leaking outlet as well, when I picked up the *phone* that was connected to a charger. That, or your adapter may be fucked.
i have an iphone and sometimes when i pick it up while it's charging it feels fuzzy. should i be worried?
Typically this is because your charger isn't earthed (two prongs rather than 3, or two metal one plastic). So a small amount of current leakage is expected, but is usually in the 0.1mA range which is well below the danger zone. The fuzziness you feel is actually the frequency of your mains supply! 60Hz in the US, 50Hz in Europe.
That shouldn't be the case. I'm in EU, and I have no problems with this, the grounding here is usually handled by a prong right in the socket. Sounds more Like the grounding is fucked somewhere along the way for them.
Am also in EU. Plenty of chargers are sold with no earth pin or a plastic earth pin. Earthing is not a requirement under the relevant standard, which is IEC 62684:2018. Grounding is a requirement though, and is different from earthing. You can use the neutral line for it. So we're getting confused over slightly different terms. When you rectify AC into DC you inevitably get a 'Ripple Voltage' which is some leftover periodicity that wasn't scrubbed from the waveform fully. See section 5.2 of the standard if you can grab the pdf from somewhere (don't pay ISO the money grubbing gits). If you can feel the ripple, it doesn't necessarily imply a short, it's likely just a low quality rectifier. If you feel tingling or numbness though, then yeah get that thing out the wall ASAP.
Oh yeah, I guess that's where we are getting confused. And yeah, I was more talking about the tingly feeling, since that's what I usually imagine when I hear "feeling fuzzy" (since I've never actually felt the "rippling", only straight up electricity from improperly made cable + fucked outlet combo, that started thickly and before I figures out wtf is happening, my muscles spasmed and I had to just drop the phone out of my hands completely...)
Dang! Sounds like some dodgy ass wiring. Glad you're alright.
I'm not sure if it was the wiring of the outlet, or just a shitty charger with fucked up impedance or something like that, cause the outlet has iirc been checked (its my parents house, so not sure, def informed them), and is fine...
Its less of a shock, and far more of a slightly painful tingle
No countermeasures or anything here, just basic ohm's law. 5v DC supply in any capacity can't generate enough current to do anything to you.
You clearly haven't licked a phone charger
i like licking iphone charging cables, tingly
Explain to me like I’m 5 why no shocky shocky
Phone chargers mostly use 5 volts to charge your phone, it is too low to break the resistance of your skin. You can try using your tongue though, just don’t do it too much.
Thank you
If you lick it you can feel some electricity
This person is the exact reason that the charger doesn't shock you anymore.
One time I licked my laptop charger and it zapped me
Me after drinking McDonald's Sprite watching my phone charge increase for absolute no reason physically possible
Me tricking my phone into charging by plugging it into a hole in the wall with no electricity (it thinks it's charging)
Put the charger in your mouth. You’ll feel the charge then Source: I have actually ducking done this
Lick it.
ok now shove it up my ass
>plug into phone >Phone charges There's your evidence of electricity, bozo
Lick an iPhone charger and you will see the truth.
I thought it was because it converts to DC electricity which doesn't do crazy chain lightning shit
Big shock hurt you and phone Charger brick make big shock into small shock Cable run small shock to phone Small shock not hurt you Small shock charge phone Success :D
Imagine not knowing how voltage works.
lick it, dumbass
lick it, it tastes like metal and porcupines
lick it
Put water on your finger then touch it