18.5v 3.5a 4.8mm1.7mm power Adapter for HP Notebook

18.5v 3.5a 4.8mm1.7mm power Adapter for HP Notebook

• As the power supply in the home is generally about 100v-240v (AC), the power supply in the car and the plane is generally about 12V (DC), but these three commonly used power supply is unstable, can not be directly charged to the laptop, otherwise it will damage the battery and laptop. The laptop needs a stable constant voltage dc power supply. Therefore, the working principle of the laptop power adapter is simple: it is to use the principle of switching power supply to transform the unstable power supply into the constant voltage dc power needed by the laptop through the conversion circuit, so as to power and charge the laptop.

• It is worth noting that this conversion circuit must have a protection circuit (overcurrent protection circuit, overvoltage protection circuit short circuit protection circuit, etc.) to prevent accidents, to protect the laptop from burning.
  
  
• Shenzhen Waweis Technology Co., Ltd. is a high-tech enterprise engaged in r&d, production and sales of notebook adapters. Main: switch power supply, power adapter, charger, LED power supply and other products professional production and processing. The products have passed UL, CE, FCC, KC, PSE, SAA, GS and other certifications. The products produced by the company have perfect protection function, stable performance, safe and reliable. With professional r & d, production and sales experience, the company has accumulated strong technical advantages and rich market resources in the field of power adapters. The company is now able to provide a full range of alternative adapters for the world's major brands of notebook computers.

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