source:power adapter Popular:adapter release time:2021-07-26 08:47:53 Article author:sznbone
Can the power adapter be universal? What should I pay attention to when purchasing?
1. Can the power adapter be universal?
Different brands of power adapter products cannot be used universally!
1. Interfaces are different: Most laptop power adapter brands have different interfaces. Different interfaces are relatively safe, because at least you will not plug in a power adapter that does not match the current or voltage to power the laptop, which may cause computer hardware damage.
2. Different voltages: different brands of notebook computer power adapter voltages are different. Even if the power adapter interface is the same, it is not possible to use different brands of laptop power adapters for power supply.
3. The current is different: the current of the power adapter of different brands of notebook computers is also different. Even if the power adapter is used between laptops of the same brand, it is necessary to confirm the voltage and current specifications.
2. When purchasing a power adapter, pay attention to the following aspects:
1. Clear signs and complete information. The mark is an important information that instructs the user to install and use it correctly, and is the most basic content to ensure the user's personal and property safety. At least the following information should be included: the name, trademark or identification mark of the manufacturer or distributor; the model code or model specification; the nature of the power supply; the rated power supply voltage range; the output voltage range, etc.
2. Pay attention to the rated power supply voltage range. Because the mains voltage in our country is 220V, when purchasing the adapter, the rated power supply voltage (that is, the input voltage) range should include 220V, otherwise the adapter will not only not work normally, but may also bring unsafe hazards such as burnout, breakdown and short circuit.
3. Pay attention to the nature of the output voltage. The output of the power adapter has two types: AC and DC. The voltage type that meets the needs of the intended use should be selected when purchasing. On the power adapter logo, the symbol of the AC logo is "~", and the symbol of the DC logo is "-". If you choose an adapter whose output is DC, you should also consider the consistency of the positive and negative polarities of the output terminals with the equipment requirements.
4. Pay attention to the output current and voltage range. The output current and voltage are an important index for selecting the adapter, and should be consistent with the current and voltage required by the electronic and electrical products that need to be supplied with power. If the voltage and current are too high, the electronic and electrical products will be damaged. If the voltage and current are too low, the equipment will not work normally or overload work, which will affect the safety performance.
5. Whether there is a safety certification mark. From design to mass production, power adapter products need to go through a series of tests to verify whether they meet safety requirements. Products that have passed the safety certification test prescribed by our country will be affixed with the "CCC" mark when they are sold.
Different power adapter brand products cannot be used universally! You also need to pay a lot of attention when purchasing power adapters! Treat electrical appliances carefully, so as to ensure our safety!
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