TheGameIsRigged
30794
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28
What is this and why?
What is this thing in this charger cord and why is it beneficial?
May 16, 2016 1:33 PM
TheGameIsRigged
30794
1241
28
What is this thing in this charger cord and why is it beneficial?
JackieTreehornProductions
it keeps your passwords from leaking out
keepguessingusernames
It stops rats from crawling onto your ship at the dock.
Cananadamn
It's a choke, used to reduce EMI, mainly conducted emissions. When developing a product companies have to pass a EMC or (1/)
llama299
It filters out electromagnetic interference so that it doesn't mess with the computer or the data being transferred.
echo1echo
When people deisgn power supplies badly, you need one of them.
livetotroll
It smooths out the electronical fairies.
JDam27
prevents the cable from acting as an antenna and receiving interference from other devices.
Cananadamn
Electromagnetic compatibility. If they can't sometimes slapping one of these on will let them skate by. It's a lot easier doing this (2/)
randomweirdness
choke
CorneliusCornwall
Its a magical mcguffin that stops trolls from stealing your cookies.
kf7mjf
*Necessary
Drewscifer
It cleans the power
jonrabbette
Basically inside the plastic cylinder there is a metal bead which prevents electromagnetic noise interfering with other electronic products
zangomuncher
@OP youre really asking the community of imgur to be brutally honest with you about a part of a cable, you've come to the wrong place.
Kemphis
That's the mitochondria, powerhouse of the cord.
B1rd0g
It the thing that gets caught on the desk when you move something so it gets unplugged.
dlw45
Upvote because I have always been mildly curious too.
SherMattLockSmith
Basically stops interference from/with other cables or electronics.
Yepthosearebees
Cancels out interference using witchcraft
Gsxs1000
Shhhhhh. I think they're listening.
buddhistsunset
Stops viruses from entering from your power adapter.
Moosecock
It works the same way my face keeps me from getting STD's
MikeHuntHertz
It's a Ferrite bead. It reduces high frequency noise that can cause malfunction. https://youtu.be/3rWEnypTEP4 nice video that explains it.
frogs2345
It's called a torroid. It is made of a ferrous metal and is used to reduce high frequency noise in electrical cables. Cheaper unshielded
frogs2345
Cables usually have them because the torroid is cheaper than grounded shielding.
Cananadamn
than redesigning any of the associated circuit boards. Companies often use the same our very similar power supply boards for various product
frjackhackett
it enables you to use the cord as a weapon in moments of peril
SomeGuyFromJustSouthOfTheMiddleOfNowhere
No need to ferrite...it belongs there.
SpaceballsTheComment
@OP i can't stress how much I love you right now for asking this question. also, upvotes for every right answer!
Nalianna
http://gizmodo.com/5871162/what-do-those-mysterious-lumps-on-your-cables-do
goldensky
Ferrite bead, removes noise from the line. sauce: I'm an electrical engineer and we do this all the time
tokisha
https://www.wikiwand.com/en/Ferrite_bead
Verusilia
Read as ferret bead...was disappointed
Rodomontade
Ok post over everyone go home
FelixTheCAT5e
Did you just fucking make me learn something???
FelixTheCAT5e
Thank you :D
Shadow027
.
NukerNoah
Neat.
Avivus
Why does it have to be right at the end of the mouse cable, where it catches on shit?
kiDDarknessssS
I needs to be as reasonably close to the device it's attaching to in order to maximize effectiveness. Having it at the wrong end 1/2
kiDDarknessssS
Makes it basically pointless.
Zoddom
TIL
moto192834
TIL it's a silencer for electronics
tarloria
I have a master's in electrical engineering, and that is my favorite description!
fsharpminor3s
Thank you! I always wanted to know!
gamer2k4
+1 for introducing me to wikiwand.
thurmin
Very interesting. Thank you for educating the masses.
salttotart
Huh. I always thought it was something to relieve stress on the cord where it meets the device.
RubyPorto
The notched rubber bit of the plug is the strain reliever. Used by everyone except Apple.
NotFunt
Well apple cables are as frail as an anorexic goth
trusesnuser
I disagree though. The trick is to never use the cables. Then it doubles the lifetime!
aussysadmin
Well increases by a third in my experience, cause for some reason the cable still degrades and becomes sticky and weird.
Vagelis1608
The charger cord creates a (weak) EMF that could interfere with wireless signals. This thing has a small "magnet" (not quite a magnet, 1/2
BrandonChun
So power cables tend to move alot of power. To make the signal cleaner they put one of these on it to make it more efficient
owlest
why do some have it and some dont?
lLikeTurtles
Some are protected against EMP and some aren't.
onlinetechguy
Full summary: https://en.wikipedia.org/wiki/Ferrite_bead
Vagelis1608
but still, called ferrite) which cancels it out. 2/2
ImHonestonhowIseethings
Much easier to understand then the wikiwand
spiceass9000
So is this how magnets work?
Rivalyn
Does it not also stop cords from generating an induction current as well?
vindicatethevigilantandthevirtuous
Nope.jpg the amount of attention/reduction is dependent on the frequency. A bead only rejects 10Mhz+ frequencies
Rivalyn
Thank you. TMYK.
SpaceDuckZeta
I opened one as a kid and the ferrite looks like a smooth rock. Any chance I have superpowers now?
mkbilli
It actually breaks very easily, nothing rock like about it.
utahjarhead
Virtually guaranteed.
ruferto
not unless it bit you
ButtsMcGee86
Depends. Do you consider cancer a superpower?
MrPink1
How did it taste?
TotallySerious
I think you just need to wait for them to develop.
joejohnjohnson747
You're totally serious
TotallySerious
Absolutely.
DJScrambles
You are now autistic.
therocksfannypack
I feel terrible for laughing at this
diphenhydraminehcl50mg
very autistic.
CaptainDeadpool
With a sprinkling of skin cancer.
lydiacrazypuglady
So many cancer, that autistic.