Notebook power adapter to use common sense

1 \ The output current can be used in the same books?

The basic principle is that the nominal current of the power supply can replace a small nominal current power. Some friends have a misunderstanding to think that a large nominal current of the power will burn books, because the current big thing. Actually current much depends on the load in the case of the same voltage is the books of the work, when the books when the high-load operation, current, when books go into standby current less, in short, the current is equal to be added to the books on the equivalent resistance of the voltage divided by the books. Large nominal current of the acer power adapter has

sufficient current margin, not in place of small nominal current power to overheat or output voltage is too low. Conversely, use the small current apple ac adapter instead of the current power on the existence of such danger. But some friends instead of 56w of power the 72w up with no problem, because usually asus adapter designed to leave a margin,

load power must be less than the Power, so this place in general use is feasible, but the remaining Replacement Compaq AC Adapter margin few books once you pick up a lot of peripherals, such as two usb hard drive and cpu running at full speed, and then there is a base to drive at full speed to read the disk, plus to charge the laptop battery at the same time, estimated on the dangerous, to feel your power supply is not already boiled eggs out by hand at any

time. More 16w 72w 56w adapter for dell is to deal with this situation. So it is best not to use a small current power supply instead of the high-current power. When the actual needs if it is to be done, conditionally friends can think of a way to Cece your books maximum consumption, current measurement method is very simple, a socket, a plug, an ammeter, a few wires, a soldering iron can. If the power of fujitsu the nominal current, of course, is safe.

2 \ exactly the same machine, Managing the power of others, I am always very hot, and why?

First do not doubt your hp power, take a look at your books doing, is not 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 battery, loud put the music, the screen brightness is the largest wireless network card has been in the detection signal, and so on, make good use of power management, reasonable adjustments to the working

3 \ Power nominal voltage is higher than my laptop battery voltage a lot will not be an accident, right?

Power to the lenovo laptop powered with battery supply to the books is different, first of all say the battery-powered, the battery output is pure DC, very clean, and direct access to DC transformer module can be battery voltage is neither possible nor designed microelectronic circuit voltage of the analog and digital signals demand is basically to 5V for the sector, to get rid of the transformer module efficiency and differential pressure demand is sufficient, 10.8V lithium battery chemistry electromotive force decided the output voltage of a power-saving core only about 3.6V, so a lot of battery three series, 10.8V battery voltage will become very popular.

Nominal value of some battery than 3.6V integer multiples slightly larger, such as 3.7V or 11.2V, and so on, in fact, in order to protect the battery (a handful of manufacturers of the battery discharge termination voltage is set to 3.7V) or in the calculation of battery design capacity when the tricky behavior. If you use a IBM power supply, the

situation is more complicated, first need to join voltage further regulator filtered, in order to ensure stable power performance is not very good case, the regulated voltage two-pronged, all the way to the books that part of the working power supply for sony, another way to charge the battery, to the books of that portion of the powered encounter with battery power when the same, and to charge the battery through a battery charge control circuit may be added in the batteries, the control The circuit can be very complex, simply should include the primary regulator, precision tunable regulator SCR adjustable pulsating

output, regulated output current feedback, chip charging process of recording and computing, the charging process since feedback regulation parameters, so The toshiba power supply voltage must be greater than the cell voltage, have a sufficient pressure differential margin supplied to the charge control circuit of the respective units. Voltage is by no means the last truly added to the batteries the 16V.

From:http://www.cheapbatteryshop.co.uk