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How to choose a notebook power adapter
time2006/10/27
- There are some precautions when purchasing the original power adapter. For example, the voltage in your country, the applicable model, etc. must first be understood.
The notebook power adapter looks like a small box with a square shape. It doesn't look like a technical content, but it's not that easy to buy a suitable, safe, durable and affordable product.
Buy original power adapter
Let me talk about the original power adapter. The original power adapter's shape, size, weight, power interface, voltage, output power, current and other parameters are no problem, save time and effort when shopping (that is, can not save money). Under normal circumstances, the price of an original power adapter is more than 300 yuan, the price is 3-5 times compatible with the power supply, if purely for peace of mind, it is a good choice to buy an original power adapter.
There are some precautions when purchasing the original power adapter. For example, the voltage in your country, the applicable model, etc. must first be understood. Laptops of the same brand and different models have the same power adapters. The input voltages may vary from country to country (although most adapters are compatible with the 100V-240V range). After determining the basic needs, try to choose a regular after-sales service center and electronic mall to buy, if you buy online, look for a good reputation and evaluation. One thing to note is that the original power adapter not only has counterfeit products, but also has the phenomenon of shoddy and old-filled in the market.
Purchase a compatible power adapter
Let's talk about compatible products. When the compatible products are purchased, the main thing is to pay attention to the matching of parameters, including input and output interface types, input, output voltage, output current, output power, appearance, weight, quality, price and other issues. However, most compatibility products will now indicate the applicable model, so friends who are not interested in specific parameters can skip the relevant content and choose directly according to the applicable model when purchasing.
There are two types of interfaces for the adapter: the power input interface and the output interface. Most of the input interfaces are plugs of three feet, and some are two feet. You should see it when you buy it. More important is the power output connector, which is the connector to be plugged into the laptop. This joint must be matched 100%. Different joint sizes, lengths, inner diameters, outer diameters, and stitch types may be different. It is not very reliable when viewed by the eyes. If it is not indicated whether it is applicable or not, it is matched in voltage and current. In this case, be sure to bring a computer to the field for testing.