The AC adapter is an integral part of any laptop. While laptops are able to run on battery power, without the AC adapter, there would be no way to recharge the battery. Laptop AC adapters provide power to the laptop and the battery by converting the electricity coming from an outlet, which is AC (alternating current), into DC (direct current) power and outputting it at the correct voltage. Older laptops often had the convertor or transformer included in the laptop itself, but this added unnecessary weight.
The laptop AC power adapter usually has two main parts. The first is the “brick” or the largest part of the adapter, which is the transformer that does the conversion from AC to DC current and connects to the laptop through a cable. Manufacturers specifically differentiate the tip sizes of this cable to ensure that users don’t plug an incompatible adapter into the wrong laptop, which could cause damage to the laptop or laptop AC adapter. The transformer is often significantly larger for more powerful laptops. This is due to the fact that a more powerful laptop requires more wattage. For example, a small netbook, designed for power efficiency and better battery life, may only draw a maximum of 40W of power. A desktop replacement laptop, with more power-hungry components, may draw 185W or more during heavy use. Therefore, it also usually requires a more powerful transformer, which translates to a larger “brick”.
The second part of the laptop power adapter is the power cord, which connects from the brick to the wall outlet and delivers electrical power to the transformer. The power cord normally comes in a couple different varieties depending on the specifications of the AC adapter. With some laptop AC adapters, this cord is permanently attached instead of being removable.
When shopping for a replacement for your laptop AC adapter, it is important to find one that is compatible with your specific model. At Tristar Computer Services Ltd. we offer to find for you brand new OEM laptop AC adapters that are compatible with your model. An OEM laptop AC adapter is one made directly by the manufacturer of you laptop/netbook. We sell laptop adapters that provide the correct voltage, and that they have the correct tip to be used with your laptop or netbook.
In contrast to other laptop resellers, we do not sell used adapters. As mentioned aboved, using an incorrect laptop or netbook AC adapter could cause damage.
We guaranteee you that when buying a laptop adapter from Tristar Computer Services Ltd. you get a quality product and quality service.