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Laptop Power Adapter Manufacturer

Eahunt will provide long-term accumulated power supply technologies for more applications, covering consumer electronics, industrial, lighting, smart home, medical and other electrical products. All the products meet the requirements of EU ERP VI and U.S. DoE VI/CEC VI (six level of energy efficiency standard) and come with safety approvals of UL、CE、 CCC、CB、ETL、GS 、BS、KC、SAA、PSE、RoHS etc. marks and reliability certifications

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Description

product-750-413

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

Why is the laptop power supply so big?

Nowadays, laptops and cell phones are getting thinner and lighter, with the exception of power adapters. Most power adapters, however, have not kept pace with the development of smart devices, which was the case ten years ago and is still the case ten years later. Netizens have also questioned: "Power adapter is also too big to carry especially inconvenient.

It is understood that the laptop needs power for a stable constant voltage DC, and the power supply at home is usually about 100V-240V (alternating current, or AC for short), but the plane and other transportation is usually about 12V (direct current, or DC for short), and in general the unstable power supply can not be directly to the laptop charging, otherwise it will damage the battery and the laptop. So the laptop power adapter was invented.

It works by turning unstable power into the constant voltage DC needed by laptops through a conversion circuit using the principle of switching power supply to power and charge laptops. But that's all? Of course not, in which there must also be over-current protection circuit, over-voltage protection circuit, short-circuit protection circuit and other various protection circuits to prevent the laptop from burning out.

Single voltage this link, 220V AC first through the rectifier circuit into a high-voltage DC, and then through the switching tube into a high-frequency high-voltage pulse, and then through the transformer into a low-voltage pulse, and then through a rectifier, voltage regulator circuit, into a stable DC. Bucking, rectification, filtering and a series of processes so intensive circuitry, resulting in a laptop power adapter is now very difficult to become smaller.

Eahunt only do high standard power supply, product 100% aging test, life expectancy can reach 100,000 hours, to meet the 10,000 times plugging and unplugging without failure standard. Product certification is complete, with CCC CE UL CB PSE KC GS, FCC multiple international safety regulations.