Q:What is the precision of a laptop power supply charger? What are the requirements for European imports for its accuracy?

First, to be able to adapt to the local voltage load, so the notebook's power adapter input voltage between 110V ~ 220V can be used normally! Second, the output current and voltage to a standard range, can not exceed or below this standard! Third, the safety inspection, so the switching power supply should be carried out safety inspection, safety detection is to switch the power supply connected to more than 2000V voltage and 1 to 2 seconds, and can be used normally, this test is mainly mine Hit and short-circuit protection access to switching power supply of electrical or digital products!

Q:Will the notebook power adapter are the same?

Not the same, the interface power will be different, it is recommended to buy models.

Q:What are the advantages and disadvantages of using laptop adapters for led lighting? Is power saving?

You use the laptop adapter to drive LED lighting is not very good, because the LED lamps are driven by constant current source (subject to LED light source characteristics of the restrictions, check the diode characteristics), and your notebook adapter is a constant voltage source, with LED lights The temperature rise, the adapter output current also followed to increase, resulting in LED lights light failure, shorten the service life.

Q:(My power adapter line was broken by me, i want to buy a new one but do not know how to choose)

The choice of the power adapter is not related to the type of notebook computer, as long as the output voltage of the power adapter V current A and the computer on the bottom of the nameplate marked on the input parameters can be consistent. It is best not to exceed 10%.

Q:Lenovo notebook power adapter three packs (warranty) is a few years ah?

Usually 1 year, you can also ask to add time, but to increase the money can be. Can be added to 2 years or 3 years can be.

Q:Plug in the power adapter when the power switch without any reaction, even the lights are not bright. But the power adapter is no problem, plug in the power adapter after boot in the absence of the battery can also be used normally. When the battery is switched on, you must turn on the notebook (the hair dryer blows, placed on the electric blanket or placed in the sun).

It is recommended to remove the machine's battery and power adapter from the machine, the machine will stand for half an hour to see if the machine can start normally, if you can not start the normal contact HP can not directly detect it, it may be hardware failure The

Q:HP notebook warranty includes power adapter

HP warranty machine for one year, the motherboard two years, a year does not include power

Q:Samsung notebook p428 can not boot, the power adapter indicator light, the notebook's power indicator light does not shine

Hello, thank you for using a Samsung laptop! ? According to your description, please try the following: 1. The power adapter can not power the notebook (ie, the power adapter is faulty), it is recommended that you replace the adapter 2. Notebook can not power, it is recommended that you take a good three bags of vouchers sent to the Samsung service center overhaul

Q:Lenovo notebook power adapter 19v can use 20v of it

Yes, the general power adapter output voltage will have an upper and lower limit (no load and load voltage), about up and down about 5%. But not recommended for long-term use. See if the adapter is suitable for the equipment, the following three conditions for reference: 1. The output voltage of the adapter is the same as that required by the device. 2. Is the adapter's output current consistent with the device requirements? (Or a little larger or smaller current is also not.) 3. The size of the joint is appropriate. (If the connector is too loose, will be bad, excessive fever.)

Q:Laptop power charging interface is not appropriate, with a laptop power adapter adapter?

3, interface matching. Power interface to the same, the DC interface requires positive and negative interface is right.