Wednesday, December 5, 2012

The laptop power adapter notes of choose and buy

The notebook computer power adapter notes of choose and buy

As a notebook gens, power adapter is important accessories, daily in the choose and buy power adapter, we often meet original and not the original prices vary more, this time how to choose? This article briefly introduce we choose and buy when the power adapter the notes. In order to help you.

The same nominal voltage, output current of the power adapter can be universal.

1. Power supply voltage, output current is different, can use at the same table on the notebook. The basic principle is that big nominal current power can replace small nominal current of power supply. e.g dell d520 ac adapter charger Estimates that someone would think so, think big nominal current of power supply will burn out notebook, because the current well. Actually how much current in the voltage of the same case depends on the load.

2. When the notebook high load operation, current some bigger, notebook into standby, current is small, big nominal current of power supply enough current allowance. e.g dell pa-10 ac adapter.On the other hand, someone with 56 w power instead of 72 w up with no problems, the reason is usually the design of the power adapter with a certain margin, load power will be less than power, so this kind of instead of in general use is feasible, but the rest of the power supply power allowance is very few, once your notebook received a lot of peripherals, such as two pieces of usb hard drive, and then CPU work at full speed, and in a base, a top drive full speed read disk, plus at the same time to recharge the battery, the estimate is dangerous, always feel your power is already can boil the eggs. So had better not use small current power instead of large current power supply.

Original power adapter is usually better than the original power is better?

1. Theoretically speaking. The power of the original must be better, but the actual use may not feel the difference. We usually equipment has a voltage input security range, such as a 2.5 mobile hard disk, it is to require 5 v add and subtract 5%, too high or too low, protection circuit will stop equipment work. If the protection circuit starts, it means before that, your machine is close to or more than it can withstand the design of upper or lower limit, this to the life of the machine are influential. (of course, here mentioned not original power, or work well, inferior products, don't ask.)

2. The more important question may be of the display data security, sudden automatic protection and stop working for computer is very horrible things, especially many don't battery friend. Sometimes puzzling restart the computer and the relevant.

3. For the power of the original, it is very clear their own power supply manufacturers need to how much load capacity, calculation of the safety of the nominal voltage current must be more accurate.e.g HP Pavilion DV9000 AC Adapter Charger

4. However, if the use is the original adapter, such as general type of transformer and so on, these problems can not be serious consideration, this is the user can only from the power supply parameters as far as possible on the think of a way to get compatible, but each adapter resistance is different, nominal voltage of the permissible error may be different, nominal current output the voltage change range of may also be different, if you are not careful measuring the relative value, to be sure, there is a risk.

No comments:

Post a Comment