Units for notebook power: device characteristics as pick

The apparatus unit to power the laptop

To connect to the e-mail / network notebook used power supply unit (PSU). It is made if sealed in a plastic case. Each is equipped with a power supply cable with a connector that is different for each model.

Adapter still known as the battery charger. Portable computer differs from the desktop that can operate in standalone mode to 6 hours. To make up for the loss of battery power is required from time to time be connected to AC power.

Tasks performed by the PSU:

• It maintains the necessary voltage / current to the rechargeable battery;
• embedded controller in the BS sends a signal on connection;
• automatically maintains the necessary power to run the computer.

BP - the energy source for laptop computers. In normal mode, it generates a DC voltage of 18 volts. But to charge the batteries of this index much.

Types and characteristics of the power supplies for notebook

Differences PD in laptop computers - a variety of connectors.

Listed below and shows the types of connectors and computers for which they are suitable:

Acer
Asus for (Rover, i-Ru, Benq, MSI and sometimes for Fujitsu)
Apple
Dell produced under 2 types of connectors
HP - Compaq Available in 2 types of connectors
Sony
Samsung
Lenovo According to the type of supply voltage. Typically, 18.5 V and 19 V. Less common are 15-16 V; 19.5; 20 V; 24 V.

According to the current output (A):

· 3,16;
· 3,42;
· 4,74;
· 6,3;
· 7,9.

Operating voltage

BP characteristic implies that the interval of the mains voltage, in which to work and provide the required parameters.

Most devices able to operate stably in the range of 110 to 240V. This protects the laptop and allows it to operate with sharp surges in the network.

stability stress

Another characteristic for the BP is stable voltages. its performance is constantly changing at the work of any PSU.

This is due to the work of the laptop. For example, when working on a laptop with graphics software, video card and processor consumes a large amount of resources. And this increase in power can not always withstand the electronic parts and are able to burn.

Also, such a power increase could lead to overheating. As a result, the characteristics of PD may change.

BP also control and a sharp decline in this indicator. If you fall below a certain value, some elements of the computer just stop working. I am particularly sensitive to changes in the hard drives.

power PSU

Another indicator for the best examples in addition to the output current, is power. Do not be scared if both figures are slightly different from the required for a particular model in a big way. The main thing that is not less. If the application settings are lower than claimed, it was then possible to overheat BP and its failure.

How important is this parameter? For the user, it becomes clear how much can pay electricity charger, connecting:

• motherboard
• video card,
• hard drive, and others.

Strictly speaking, the required power rating can be calculated by summing the power needed to operate the individual elements and select PSU bit more power from the stock.

If the power supply is below the installed capacity, it can cause:

• computer freezes;
• frequent rebooting;
• characteristic clicking of the hard drive heads;
• the laptop itself can not be started.

I must say that is subject to interruptions and the motherboard itself. Maybe she herself never fails, but contacts and connectors can be burned from the constant heat.

On, you can select the output power of the current universal power supply in the same way. Main value must coincide with the required value of laptop or slightly exceed it. Only these values ​​define long and reliable operation of the charger.

Potentially, the maximum current line

This is also one of the important parameters of the PSU. But more often the user does not take it into account.

Information on the permissible current is specified in the data sheet. If it is not - it is an occasion to question the quality of the device.

non-electric values

Besides the electric characteristics are important in choosing the parameters of non-electric and devices. In the data sheet they may not be. It is therefore necessary to know what else is indicative of a better PSU.

• how wide operating temperature range;
• reliability (Mean time to failure);
• the weight;
• length of feeder cables;
• ease of use;
• product environmental class;
• compliance with international standards;
• the overall size of the dimensions;
• line plus and minus to pin contacts with the introduction of the laptop.

pros

Advantages of portable power supply:

• availability combined with reliability in operation;
• Efficiency (66-71%). Power losses occur in the processes that the time is so small that they do not affect the BP operation;
• small size and weight does not lead to overheating of the battery charger;
• provides connection to networks with a spread in the voltage range of 110-240V and a frequency of 50-60 Hz.

Problems

When buying a new charger output DC voltage occurs danger polarity. Wanted to make sure before plugging the power supply in accordance laptop input polarity (see fig.):

Failure to do so may result in damage to both BP and the laptop. Before switching on check that the polarity of the same.

Frequent connection problems:

• BP is not included;
• PSU connectors become loose because of which lost contact on.

Three common defect BP:

• BP simply blown (peculiar odor of burnt wires).
• When heating is disconnected and the load power supply (capacitor out of order).
• Problems with plug or cord.

The first two will not be able to repair the damage. According to the table to select the power supply of the above can be yourself, as double-ended power supply interchangeable. The main thing - to find a suitable power and a connection socket.

But the failure of the power supply is rare, but the frayed cord or crank connector found in the home. Therefore, when carrying the notebook recommended BS to pull out of the contact slot and gently twist cable.

How to choose a power supply for laptop

Before buying check for compliance with operating parameters.

• input voltage (110V / 220V);
• recommended output voltage (V);
• output current (A);
• type connector on the laptop;

It happens by manufacturers of portable computers use power supply units from third-party manufacturers and paste labels on them under the company's brand. In this "plagiarism" are seen:

• ACER;
• ASUS;
• Toshiba and others.

It is not always an indicator of the original power supply quality.

On the underside of the computer has a sticker, on which are marked characteristics. This voltage and amperage.

More common in laptops voltage 11-18 V. When the power supply is selected, permissible deviation 1.5-2.1 V. To select the current stick to the rules - AC output power can not be less than that required for a laptop computer.

If the PSU power reserve, it ensures normal operation, the weak - goes down.

When buying a new power supply is necessary to pay attention not only to the manufacturer, but also the price. Cheaper is likely made on the underground factories and does not guarantee the normal operation of the device.

Differences in weight due to the fact that counterfeits do not try to improve the products and save, for example, to install the noise shield. There may be no forgery protection scheme and additional filters for rectification.

What can turn a purchase? Due to lack of power charger fails, which would entail the purchase of a new PSU.

The resulting value and determines the charging power selection device.

The same applies to the universal charger. Despite the fact that they have the opportunity to reverse polarity, voltage switches and additional connectors - often they do not work for a long time.

Which is better

The main condition, which should have the best BP - is the output voltage, information about it is applied to the body devaysa, and indicate in the passport. On the back side of the notebook, as for the options.

To be defined with a choice enough to know the 3 parameters:

1. The current strength.
2. Output power.
3. Output voltage.

These values ​​are closely linked. If the output voltage and one of paragraph 1 or 2 coincide with one of the parameters specified in the recommendations to the notebook - battery charger will be guaranteed to operate.

How to use

If you need to buy a new charger, it makes sense to stop the choice on the device of the European assembly.

Some laptops will not replace the native on a universal power supply.

In the original power supply unit determining sew "friend or foe" - the controller sends a signal and if you do not receive a response signal, it is not determined laptop protection system and forcibly reduces the CPU frequency, resulting in the battery is not supplied charge.
In this case, when you start the system pops up a message of non-compliance of this adapter.

Since the laptop is a portable device, it is necessary to keep both him and the power supply in the room for some time (at least two hours).

With frequent surges have to purchase at least stabilizer.

wiring rules. First wearable computer to the power supply, and then the charger into the AC power socket.

It is dangerous to use a laptop with a dead battery. In this case, it may be damaged adapter itself or the entire set. If the laptop is running on battery power less than 10Minutes - dead battery should be replaced without fail.

This is a sign of failure of the controller and battery charging circuits.

If you are using a new battery stick for using the new battery instructions (full discharge and charge cycle).

Guarantee

Manufacturer's warranty Charger implies the willingness of the company to remedy the defect or other fault, if it is caused by manufacturing defects.

Under the term of the warranty, we mean the time during which you are free recovery performance of your device. The onset of the warranty period starts from the date of purchase in the computer after the cabin filled warranty card stamped trading organization.

This happens from the device on the Toshiba.

In the event that the date of sale could not be determined, the instrument warranty begins from the date of manufacture of the device.

The warranty on the power supply and the battery is smaller than a laptop, but it usually ranges from 6 months to a year.

malfunctions

In 90% of cases of malfunction BP - a damaged wire or plug in the charger. And this damage is easy to remove by hand.

External signs of breakage of the conductive cable or a contact group:

• If after clicking the "Start" button - nothing happens.
• There is a periodic switch.
• The operating system boots through time and after a few seconds the laptop off.
• Housing supply unit is extremely hot.

Replaced by any other, too, will not work. Proprietary HP PD as a contact for the central controller transmitting a signal to the entire system. Moreover - despite the fact that the contact group HP and Dell are the same in appearance, they are not interchangeable.

But if the food is not three-prong, suitable universal power supply. In set 8 are transition connectors for connection, and the voltage is set automatically (in some devices set manually).

So that the device could work - power universal power supply should be higher than the power of a laptop computer.

But the universal adapters are three drawbacks:

• unreliability is manifested in overheating and failure of;
• unreliable contact to the adapter connector;
• incompatibility of devices, which results in malfunction of the keyboard and the touchpad.

manufacturers

Apple

Options Power units for computers Apple different. Some of them with automatic tracking power supply input voltage and automatically adapts to it.

Other - BS with manual switching. The switch is equipped on the body. For regions with a mains voltage different from the European - 230V 50Hz, equipped with laptops adapted PD.

Buro

Company Buro It specializes in the universal network adapters that are compatible with ACER, ASUS, DELL, FUJITSU, HP, SAMSUNG, SONY. power selection occurs automatically.

It is recommended in the selection draw attention to the power of such adapters.

FSP

Taiwanese power supply manufacturer specializing in the production of universal power supplies for laptops, tablets Smartphones and e-books from different manufacturers.

Have many protections:

• from overvoltage surges and a network;
• from the PSU overheating;
• Battery recharging.

FSP Group It is a leader in the production of just such a product.

Hama

Direction German company Hama GmbH & Co. KG - the release of accessories for audio and video, and computer products. Hama - a global company specializing in the production of such products. quality check takes place in the company's laboratories, which guarantees compliance with all international standards.

In Russia, the Hama company's products are:

• cable television, video, computers;
• means of external purification:
• chargers, AC adapter, battery;
• headphones and external speakers, and other accessories for photographic, video and computer equipment.

Hewlett-Packard (HP)

The motto of the company to create and improve computer technology. HP - the largest US company in the field of information technology and cybernetics. Furthermore it's largest supplier of hardware and software. It is known around the world not only the release of computers, as well as:

• scanners;
• printers;
• monitors;
• server stations;
• copier;
• Web cameras;
• smartphones;
• network equipment and other products.

Ippon

The main priorities of this trademark issue of uninterruptible power supplies. For the Russian market IPPON It produces alternative devices for protection against power cuts in working conditions of Russian users.

Wearables they release adapters pulse type. A feature of these adapters is automatic selection of the output indicators. This allows the use of these adapters as an alternative power supply for most models of laptop models.

In addition to the above, IPPON range devices are complemented by:

• voltage stabilizers;
• automotive inverter for notebooks;
• line filters.

Lenovo

Since 1984, the company Lenovo with a small company for the purchase of spare parts and accessories for computers has become one of the largest computer manufacturers in China. Located in the Global Fortune 500 list. Currently, the company's interests extend to 160 countries.

The main product is:

• notebook computers;
• tablets;
• Desktops and candy bars;
• Webcam with microphone;
• smartphones;
• blankets;
• All-format e-books;
• charging device;
• mobile projectors;
• LED-display;
• batteries (non-original batteries Lenovo may not be charged after the system boots).

Palmexx

company PALMEXX - a well-known manufacturer of parts and accessories for PDAs, laptops, mp3 players. On the Web site there is a huge selection of own production of power units for many models of portable computers.

The manufacturer guarantees the quality work of components and declares that all product samples manufactured according to European standards, which are preliminary control of the relevant statements quality. The company's website can select and order:

• batteries;
• power adapters;
• Car Power Adapter;
• cables and adapters.
• Also well represented products for:
• tablets;
• smartphones;
• car accessories;
• 3D, TV, VIDEO;
• video and Cameras.

Polycom

The company Polycom Inc. It became known throughout the world for their own development of audio and video conferencing systems.

the company introduced to the market:

• systems for high-definition video conferencing;
• connection terminals for video conferencing for large halls, as well as for meeting rooms;
• conference - phones;
• software tools for audio and video conferences;
• Power supply for series Polycom IP-Phones.

Supermicro

Another supplier of power supplies, enclosures for desktop computers, network hardware, motherboard and cooling system - is a US company Supermicro (Super Micro Computer, Inc).

The main specialization of the company - development of the x86-based server platforms and components for servers, workstations and storage systems.

Xilence

German-Chinese company Xilence Technology Co. a recognized expert in the production of cooling systems, such as personal PCs and laptops. But the company's main products are:

• Power supplies;
• cooling system for desktop PCs, processors, hard drives and graphics cards.

Scientific development Xilence aim to ensure that the computer is running with the least noise and greater energy efficiency, increasing the power of today's personal computers.