The Reason for AC Adapter of HP Laptop Get Hot

Feb. 20, 2011 - PRLog -- Here is 3 main reasons might cause the AC adapter getting hot:

Adapter Application

Laptop AC adapter is comprised of  two circuits that make sure a steady, usable power supply for the computer or other device. A transformer lowers the voltage, while a regulator supplies electricity at a steady voltage, free of electrical "noise." These circuits use a small amount of electricity and generate a small amount of heat. AC adapters are usually slightly warm to the touch. They may be warmer when the device is using a lot of electricity, for example if it is running and charging its battery. There's no reason to worry about a hot adapter unless it's too hot to touch comfortably.

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External Causes

AC adapters rely on atmosphere passing over them to heat elimination and cool them. If the adapter is covered, for example by a blanket or rug, the excess heat is trapped and the adapter will overheat. Always keep the adapter free from obstructions. If it has proper ventilation, it will remain at a moderate temperature.

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Internal Causes

Adapters might be overheat because of the circuits in that little black box, such as the regulator, are malfunctioning. If the part has gone bad, it may generate excess heat and have to be replaced. The appliance itself can sometimes draw too much power from the adapter, increasing the current flowing through it, causing it to become hot.

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