Charger Cable: What does that circle on your charger cable do? 99% of people don't know its benefits...

Have you ever looked at your phone or laptop charger? You may have noticed a round cylindrical part attached to the charger cable. These days, it's mostly seen on laptop chargers, but it used to be on phone charging cables as well. If you're unfamiliar, this cylindrical part on the cable is called a Ferrite Bead or Ferrite Choke. This small part has many benefits. Let's understand in detail how this often overlooked part of the cable makes your phone or laptop safe.

What is a Ferrite Bead?
This black cylindrical part found on your phone or laptop charging cable is called a Ferrite Bead or Ferrite Bead Choke. Its primary function is to block electrical noise. Whenever current passes through the charger cable, it generates high-frequency waves. These waves can block or interfere with the signal reaching the device. The ferrite bead's job is to block these waves and keep the device safe and stable. Many people mistake this part for a fuse, but that's not true. Instead of cutting off current, it works to filter out the noise. You can also call it a noise filter.

Why is a ferrite bead important for your device?
As we mentioned, the ferrite bead's job is to block electronic noise or waves generated by high-voltage current. If these waves are not blocked, the current passing through the charger or data cable begins to generate small, high-frequency signals, which can disrupt your device's circuitry. Simply put, the absence of this small black part can cause problems like hanging, signal loss, or charging interruptions in your mobile, laptop, or TV. However, if a ferrite bead is present on the cable, it blocks these noise signals and allows the signals necessary for the device to pass through smoothly.

Why is it not available these days?
If you don't find this ferrite bead on your laptop or phone's charging cable, it's likely that your charger and cable support better, more advanced technology. Modern chargers and cable connectors already have filters and circuits built into them, eliminating the need for a ferrite bead. However, you may still find it on appliances like geysers and microwaves.

Disclaimer: This content has been sourced and edited from Dainik Jagran. While we have made modifications for clarity and presentation, the original content belongs to its respective authors and website. We do not claim ownership of the content.