Charging a laptop is a common thing, but it is different from the small transformer charging head for mobile phones.laptopchargers are usually bulky. Although some newer laptops that use USB-C charging have smaller transformers, you will find that most laptop models (especially some higher-end products) still have a thick transformer in the middle of the cable. So why is this?
Why do most laptop chargers have a large transformer?
The transformer in the middle of the laptop charging cable plays a very important role. It can convert alternating current (AC) into direct current (DC). This is because unlike other appliances in the home, laptops and most other electronic products use DC power. There are three main components inside the laptop transformer, including transformer, capacitor and diode, each of which plays an irreplaceable role.
- transformer
Converts AC power from the outlet into DC power that can be used by your laptop. - capacitor
Helps smooth out voltage fluctuations to ensure a steady flow of charging power. - diode
Make sure the current only flows in one direction.
While transformer sizes and shapes may vary depending on your laptop make and model, they all serve the same purpose. The transformer converts the charge from the outlet and then through the wire to charge the laptop’s battery. In short, a transformer ensures that your laptop or computer receives the right type of current and the right power. Since different laptops have different power requirements, manufacturers usually recommend that you use the original charger.
When your laptop charger converts electricity, some of the energy is lost in the form of heat, which is why your laptop charging transformer often feels very warm to the touch, especially after it has been used for a period of time.为了确保变压器可以顺利散热，在使用时你必须将它放在通风良好的地方。
In addition, the charging transformer should also be protected from collisions and falls to avoid damage to internal components. You should also avoid bundling the cables too tightly, and it’s best not to use them rolled together, as damage can occur over time, and a damaged charger may cause slow charging or stop functioning altogether.
Source: KOCPC Chinese