Replacement Sony VGN-SZ250P Adapter

Sony VGN-SZ250P Ac Adapter are made from highest quality parts, the Ac adapter are tailored made according to the original size, whether the ac adapter appearance, size and quality are the same as with the original. Every s adapter should be under strict quality control including filtration and safety testing of voltage and power before leaving the factory, and has passed the authentication of CE, UL, EMC, CQC,ROHS, etc. Global Universal, different countries with different specifications of AC power cord.

• What is the nominal voltage and current of Sony VGN-SZ250P Ac Adapter mean?

  The nominal voltage of adapter normally refers to the open circuit output voltage, that is a voltage value not take any load and without current output. Therefore, this can be considered as the output voltage limit of Sony VGN-SZ250P power supply. For the internal use of the initiative power supply unit or voltage regulator components of the benchmark, in general the use of high resistance DC voltmeter can directly measured the nominal voltage, even if the mains voltage fluctuations in a certain place, the output is also a constant value;
  The current of adapter: Regardless of any laptop adapter has a certain amount of resistance, so when the laptop ac adapter output current, the voltage drop in the internally , which is equal to the output current multiplied by the Sony VGN-SZ250P power adapter resistance. Resulted in two things, one is the heat generated is equal to the square of the output current multiplied by resistance, so the power will be hot;
  
  

• the same nominal voltage, output current differences, Sony VGN-SZ250P Ac Adapter can be used in the same laptop?

  The underlying principle is the nominal current of small power can be replaced by a large nominal current of the power. It might be misunderstood, someone thinks great nominal current of the power will burn Notebook, actually how large the current depends on the load in the case of the same voltage;
  that is, the work of the notebook, the current was bigger when the notebook in a high-load operation and smaller when the notebook turned into standby state, in short, the current equals to the voltage added to the notebook divide by the notebook's equivalent resistance. Large nominal current adapter has sufficient current margin and will not overheating or low output voltage after replace a small nominal current power.
  If you use a small current replaced a high-current Sony adapter will ouccers such dangerous. But some friends instead of 72w with a 56w ac adapter for Sony VGN-SZ250P is also no problem, that is because Sony ac adapter is usually designed to leave a margin, load power must be less than the power, therefore it is feasible, but the margin on the remaining adapter power are only a few;
  
  

• The same type of laptop, why mine always hot when someone else's Sony VGN-SZ250P charger is just warm?

Do not doubt your adapter problems, first check that what are you doing with your laptop, whether like the above said two usb hard drives, cpu running at full speed, hard disk read and write crazy, drive at full speed to read the disk, while charging the laptop battery, stood loud music, the screen brightness of the largest wireless network card has been detected signal and so on, make good use of power management.