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Ever Wondered What's Inside This Bead At End Of Your Laptop Charger? Mystery Solved!





Today, we are going to reveal you the secret inside this tiny cylindrical bead at the end of your laptop charger cable...

#3 Laptop Charger

#3 Laptop Charger

Laptop is a necessity now, isn't it? Just imagine your Laptop with a defected charger. How long will your laptop last? Not very long for sure. So do you have any idea about your laptop charger? We all have a basic idea about the purpose of each wire going in and out of our computer. But a few wires seem a bit off when it comes to their appearance.

They have a cylindrical bead dangling near the end. So what's this bead doing on that wire and what purpose does it serve? Today, we are going to unravel this mystery for you.

#2 Bead

#2 Bead

You'll find this bead in each and every laptop charger of every company. In fact, You will not only find this bead at end of charging cables but also mouse, keyboard and other peripheral cables. It turns out that lump's called a ferrite bead or, more generically, a choke.

Well, believe it or no but it's a fancy name for what's basically an electromagnetic wave-bouncer. If you open this bead, you will not find any complex circuits but only a ferrite cylinder that is magnetic in nature. It is this magnetic quality of the bead that serves the purpose.



#1 The Conclusion

#1 The Conclusion

So here comes the Climax. Basically, when current passes through any cable, it generates electromagnetic interference (EMI). Your electronic gadgets also produce EMI during operation. For example, if you connect a camera to your monitor, the camera would produce interference and cause your monitor to flicker without the presence of a ferrite bead. If left unabated, EMI can wreck havoc with your computer peripherals.

You definitely don't want that, do you? These ferrite chokes ensure that signals are only sent in the intended directions and no EMI is transmitted between the peripherals. The choke dampens these EMI waves by acting as an EMI blocker. The blocking is most effective when it is near the source of the EMI, that's why you will only find these ferrite beads near the end of the cables. So, this little mystery is now solved! These tiny cyst-like beads make sure that our computer peripherals work properly and don't cause any issues for the computer itself. Now you didn't know that, did you?







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