combattery84

Battery and power adapter as you principle Acer AC Adapters compaq AC Adapters
Power to the notebook power supply and battery to the books is different, said first battery-powered, the DC battery output is pure, clean enough, you can directly access the current transformer module, the battery voltage is neither possible nor need to design very high, microelectronic circuit, analog and digital signals to 5V voltage demand is now largely for the sector, remove the transformer module's efficiency and pressure requirements, 10.8V enough.
And determine the lithium chemical force the output voltage of a power-saving only in the core is about 3.6V, so many batteries are in series with three ways, 10.8V will become very popular battery voltage. Some battery 3.6V nominal value than an integer multiple of slightly larger, such as 3.7V or 11.2V, and so, in fact, is to protect the battery or in the calculation of design capacity of the battery when the tricky behavior.
If you use a power supply, the situation is more complex, first of all need to join the voltage regulator further filter to ensure that the power performance is not very good stability under the circumstances, the voltage regulator after the two-pronged, all the way to the books Working power supply, another way to charge the battery.

Different brands of laptop power adapter, the interface is usually not the same
Power to the books happened in that part of the battery when the same, and that part of the battery need to charge the battery charge control circuit can be added to the batteries, the control circuit can be very complex, it simply should include primary regulator, precision tunable regulator, SCR conditioning pulse output, voltage output, current feedback, the process of recording and dell AC Adapters hp AC Adapters toshiba AC Adapterscomputing chip charge, the charge process parameters from the feedback regulation, etc., so the power supply voltage must be greater than batteries before margin pressure sufficient to supply charge control circuit of the unit. ifferent output current universal adapter you can
As we all know, the power adapter is made by the two parts connected, one side is the power adapter, on the other side is the power cord and plug laptop jack, when the power adapter that part of the failure, sometimes we just replace that part of the can, and then holes here do not change. So the question now is, the same nominal voltage of the power supply, if the output current is different, the same can not be used in the books? The basic principle is: large nominal current of the power can replace the small nominal current power supply.
Some friends are misunderstood, that a large nominal current of the power will burn books, because the current big thing. In fact, what the current situation in the same voltage depends on the load, that is, the work books, when the books when the high-load operation, the current larger, the books go into standby when the current is smaller, equal to the increase in short current books on the equivalent resistance of the voltage divided by the books. Nominal current of the power supply has a large enough current margin, will not replace the current power after a small nominal output voltage is too low or overheating situation.
On the contrary, with a small current power supply to replace the current existence of such a large risk. But some friends with 56W instead of 72W of power have no problem with it because the design of the power adapter is usually left a certain margin, the load must be less than the power supply power, so this place is in general use feasible, but the margin on the remaining power supply is very small. toshiba Satellite A205 Adapter acer PA-1750-04 Adapter toshiba Tecra A8 adapter

   

Lenovo: 20V, 3.25A Shenzhou: 19V, 4.74A

   

HP: 19V, 4.74A DELL 19.5V 4.62A

   

Acer: 19V, 4.74A ThinkPad: 20V, 4.5A

   

Sony: 19.5V 4.7A Samsung: 19V, 3.16A
Suppose you take a lot of the books peripherals, such as two USB hard drives, and CPU at full speed, then there is a base, the above read the disk to a drive at full speed, plus the same time charging the battery, estimated to dangerous to use at any time hand feel your power supply is not already boiled eggs. 72W more than 56W of the 16W adapter is to cope with such situations. Acer TravelMate 600 AC Adapter toshiba satellite A135 Adapter acer LC.ADT01.001 Adapter dell inspiron 2500 Adapter