Adapter to the notebook

Power supplies for laptops, often called "charging" or "charger" although this name is not correct, because apart from the functions they serve as a battery to power the laptop the other nodes. Therefore, there is a more accurate name, laptop power adapter , or just the adapter 220 volts. The main task of the adapter, make 220 ​​volts alternating current (by the way, is not always the best quality in our outlets) about 19 ​​volts DC voltage quality. "Nearly" because different brands and output voltage, although it may not be less than 12 volts, which have long been used in computers and laptops to power various devices.

All current adapters, be it a laptop SONY ASUS or another well-known company like, most caught on impulse circuit power supply, which has long been superseded "transformer". 

There are many reasons: increased efficiency, reduced size, and strangely lower cost, although the scheme is much more complicated, but do not use expensive bulky transformers and high-capacity capacitors.

Of the total group of firms can be divided into two DELL and HP, which have complicated the design of the power supply and added to the two wires which supply voltage wire third information. According to it, the laptop gets an identification signal, and refuses to work if the signal does not like, for whatever reason.

Controversial question of the usefulness of such an invention, on the one side of the laptop as it receives additional protection, on the other circuit complexity, and often in the hands of our users who like to bend the wire, there is a closure of 19 in the central wire. Other firms have shown that, in principle you can do without the information wire, so both options are worthy of respect. Except for this small difference all branded power supplies are similar, slightly different voltage from 16 to 22 volts and the power which is not surprising small netbooks use less energy than most 17-inch gaming machine.

People often ask what the difference between "firm" power of many emerging counterparts, so-called universal ... Of course there is no difference in principle, but the practice shows sales, the failure of the past more often. I think this is due to the fact that the company still care about their honor and put more quality components. As universality is achieved by reducing the reliability of switches and adapters. So you need to buy the original adapter to the laptop, if possible, especially since the difference in price in recent years, declined.  

 Adapters is often out of order, parts for laptops . Sometimes good original charge breaks caused by too active users, in other words, they break out the output jack, in such cases it is sufficient to replace the power cord and your device will work for many years. All modern manufacturers, however, make the adapter body disposable (no screw connections), but our professionals can seamlessly crack and glue it without any visible defects.