Laptops Desktop Power Adapter

With all the certifications UL, ETL, FCC, CE, CB, GS, CCC, CQC, PSE, KC, KCC, SAA, RCM, etc.

We are now in the age of technology, take laptops for example, the systems are getting smarter and the size is getting thinner and thinner. Even in terms of charging, most of the newer computers are starting to use Type-C ports, which means that these computers can be fast-charged in fast-charging mode, at high speeds. But why its external power supply volume is still so big?Eahunt adapter manufacturers tell you why.

Some netizens have also questioned how much power is consumed by an induction cooker or a kettle, but its power lead is just that small. And the total power supply of the laptop power supply only how big ah? The power is only in the 50W or so, how to also be equipped with a "big brick" it?

In fact, the laptop's external power supply is also called a power adapter, that is, the "big brick". It is understood that notebook computers need to use a stable constant voltage direct current (direct current, referred to as DC), while the home electricity is usually 220V alternating current (alternating current, referred to as AC), the direction of the current will be done over time with periodic changes, very unstable. Generally speaking, it is impossible to charge a laptop directly from an unstable power source, otherwise it will destroy the battery and the laptop. So we need our "big brick" this big brick is actually a transformer, the unstable power supply using the principle of switching power supply through the conversion circuit into a constant voltage DC and then transmitted to the laptop.

Specific conversion process is this: 220V AC first through the rectifier circuit into a high-voltage DC, and then through the switching tube and transformer into a low-voltage pulse, and then through a rectifier, voltage regulator circuit, the low-voltage pulse into a stable DC. It can be seen that 220V AC power into a stable DC power to go through such a complex circuit, plus some circuit protection settings to ensure charging safety. That's why the size of the current laptop power adapter is so large and difficult to reduce.

Eahunt is a source manufacturer and all products are factory direct, so the price is very affordable.