Power supply for a laptop with more power. How to choose a laptop charger: we strive for a balanced power supply. Selecting an adapter by connection type
When choosing a power supply, you need to consider several parameters that determine the type of charger you need:
- laptop brand;
- output voltage (Output) in volts (V) and current in amperes (A);
- configuration of the contact part of the power supply for the charging connector of a laptop of a specific model.
Brand Definition
First of all, you need to determine the brand of your laptop. Leading manufacturers such as TopON, LITEON, DELTA, LiShin produce power supplies. They manufacture almost all models of chargers for laptops of all well-known brands: ACER, ASUS, DELL, HP, Samsung, Sony, Toshiba, Fujitsu-Siemens, Lenovo, LG, IRU, ROVERBOOK, MSI.
At the same time, power supplies for laptops of different brands often have the same electrical parameters, which makes them interchangeable. For example, some power supplies for ASUS devices are also suitable for Toshiba laptops.
Some power supplies are also produced by lesser-known companies. Such devices have original connectors and in most cases cannot be replaced with another type of charger.
Output voltage and current indicators
One of the main characteristics to consider when purchasing power supplies is the output voltage. The meaning of this parameter can be found by reading the technical documentation for the laptop. In addition, the output voltage is always indicated on the case of the power supplies (regardless of their manufacturer), as well as on stickers located on the laptop computer itself.
Most chargers are designed for an output voltage of 15-20 V. Fluctuations of this indicator are allowed within no more than 1-2 V. If the output voltage of the newly purchased power supply differs significantly from the required one, the laptop and the charger itself will quickly fail out of service.
When choosing a charger, you need to pay attention to both the output current and power. Both of these indicators may be more than those required for a given model of laptop computer, but not less. If one of the parameters is lower than required, the power supply will heat up excessively, which will lead to its failure.
To correctly determine the actual power output of your laptop, you need to multiply the current output by the voltage. As a result, you will receive a value that determines the choice of power supply based on power. Power supplies are selected for output current in the same way as for output power. The main criterion is the value, which must correspond to or exceed the value required for this model. Only in this case will the charger work reliably and for a long time. When choosing a power supply, it is enough to determine either the current value or the output power value. Both of these parameters are closely interrelated, so matching one of them with what is specified in the documentation for the laptop guarantees the correct choice of charger.
When purchasing a charger, you also need to pay attention to the polarity of the contacts. In most cases, all modern charger models have a minus on the external contacts and a plus on the internal contacts.
Types of charger connectors
Power supplies differ in the type of connector. These are basically charging contact parts that are directly inserted into the laptop. Some laptop manufacturers, with the same electrical parameters, have different power supply connectors. In addition, in some cases, when it is still possible to connect the contact to the laptop connector, the connection may be unreliable and may lead to a breakdown of the connection in the future. Below is a list of power supply connectors with their sizes and compatible brands of laptops.
When choosing a power supply for a laptop, you should pay attention to its main characteristics:
- Input voltage (110V/220V);
- Output voltage (V);
- Output current strength (A);
- The type of connector inserted into a laptop.
Most power adapters are made by just a few manufacturers, such as LITEON, DELTA, LiShin, AcBel and FSP. Blocks under these brands are the most popular and of the highest quality.
Laptop manufacturers, as a rule, only stick their stickers on power supplies. Many laptop manufacturers do this: ACER, ASUS, Toshiba, Fujitsu-Siemens, HP, Compaq, DELL, LG, IRU, ROVERBOOK, MSI.
It follows from this that it is not always necessary to buy the original power supply from the laptop manufacturer; it can be cheaper to buy the original manufacturer of the power supply.
To select the correct power supply, it is necessary to determine the output voltage and current.. These specifications are usually listed on the bottom of the laptop.
Most laptops have an input voltage of 15 to 20 volts. When selecting voltage, a deviation of 1-2 volts is allowed. When selecting the current strength, one rule applies - the output current of the power supply should not be less than that required for the laptop. The higher the power supply current (at the same voltage), the more powerful the power supply. There is an opinion that a more powerful power supply can damage the laptop battery, but this is a misconception, because... Ohm's law has not yet been repealed! A more powerful power supply will not damage the laptop; it will remain intact and will not work at the limit of its capabilities. A weaker adapter will not damage the laptop, but it may burn itself out. So you need to choose either one that matches the voltage and current or a more powerful one.
Power supply connectors are divided into standard ones, having two contacts (voltage and zero) and with a third intelligent output.
Power supplies with standard connector suitable for laptop brands such as Acer, ASUS, MSI, GigaByte, ViewSonic, RoverBook, Toshiba, Fujitsu-Siemens, iRu. The connectors of such power supplies differ in outer diameter (mainly 5 and 5.5 mm) and inner diameter (1.6 mm; 2 mm; 2.5 mm). When selecting an adapter, it is necessary that the power connector exactly matches the laptop's power socket, otherwise you can either break the laptop's power connector or it will burn if the contact is poor. Typically, the internal contact is supplied with supply voltage (+), and the external contact is supplied with zero (-). Be careful, reversing the polarity of the contacts leads to burnout of the laptop motherboard.
Two-pin types include SONY and SAMSUNG power supplies, although they have a central pin, the supply voltage is output to it, and zero is output to the external contact.
Three-pin connectors are used primarily in DELL and HP products..
DELL power supplies have three outputs: +19V, zero and information (central pin). When you connect the power supply, the laptop reads its power. If the power supply is less than required, the laptop will turn off battery charging.
HP/Compaq power supplies have exactly the same connector, and the central pin is also used to determine the power of the power adapter, but these connectors are electrically incompatible.
Power supplies for DELL and HP laptops are not compatible!
There is one more point worth paying attention to. Nowadays power supplies for laptops are sold almost in a bread shop. The variety of offers amazes the imagination, and the names of the manufacturing companies are tongue-tied.
In addition to the above characteristics, there is one more - QUALITY!
Let's take two DELL power supplies.
One of them is original DELL, the other is non-original, they have no external differences and for a non-specialist it is very difficult to distinguish the original from the fake. A specialist can distinguish an original power supply from a non-original one by weight and quality of plastic. The differences in weight can be easily explained by taking the power supplies apart.
The original power supply is completely covered with a screen.
In addition, a non-original power supply has a simplified circuit, often lacks a protection circuit and additional filters, instead of elements there are jumpers, and the quality of soldering is simply surprising.
What are the consequences of such a purchase - if you're lucky, then nothing! If you're unlucky, then repair your laptop.
The same filling many Chinese power supplies from unknown manufacturers. A lot of universal power supplies are sold with a bunch of voltage switches, polarity reversals and a bunch of connectors and of dubious quality.
High-quality universal power supplies are produced only by serious manufacturers: FSP, LiteOn, AcBel, (manufacturer FSP).
A good power supply for a laptop is like high-quality gasoline for your car; the higher its quality, the less likely it is to break down.
To replace a burned out one or in addition to an existing power supply, a universal power supply for a laptop would be an ideal option.
Universal power supplies for laptops are usually cheaper than the original power supplies from the laptop manufacturer, and finding such a power supply in a store is much easier.
However, there are several important nuances. In order for the purchased power supply to work properly with your laptop, the following conditions must be met:
- Voltage supplied by power supply(or one of the voltages for universal power supplies) should approximately match the power consumption of your laptop. A difference of 3 - 5%, for example, 19 Volts instead of 19.5, is not fundamental. You can find the supply voltage designation on the original power supply of your laptop (in our example - 19V, that is, 19 Volts)
- Maximum power supply, should be no less than that consumed by your laptop. That is, a laptop that originally had a 70-watt power supply can be powered by a 120-watt power supply if it meets all other parameters. On the contrary - no.
If you do not know the power consumption or output power of the original laptop power supply, then for DC it can be calculated as the product of voltage and current (measured in amperes). In our example, the voltage at the output of the power supply is 19 Volts, the maximum permissible output current is 6.32 Amps, respectively, the maximum output power is 120 Watts. For a specific laptop, you can find out these numbers by looking at the markings of the power supply you have, in the documentation for the laptop, or, for example, in (for quite some time now we have been photographing in detail the markings of the power supplies of all laptops that go on sale.) - Same plug type and dimensions. This is the most important point when choosing a universal power supply instead of the original one. The vast majority of modern laptops have a connector for connecting a power supply, into which a plug in the form of a hollow cylinder is inserted, which is described by three characteristics - outer and inner diameter, as well as polarity (i.e. where on which side of the cylinder, inner or outer, is the plus, and which one is a minus). All these characteristics must match, otherwise the plug will not fit into the connector, will dangle there, or will be connected with reverse polarity, which is very dangerous.
For those sold in our store, these dimensions are usually indicated for all attached detachable plugs. You only need to measure the plug of the original power supply from your laptop with a caliper or other suitable tool. ATTENTION! A discrepancy of even a tenth of a millimeter may mean that the plug is completely incompatible with the connector of your laptop. Therefore, if you decide to measure the dimensions of the plug yourself, be extremely careful.Please note that some laptops or netbooks may come with unpopular sized power supply connectors. In this case, independent selection of a power supply becomes very complicated.
The power supply can not only bring a sleeping laptop back to life, but also put it to sleep forever. How to prevent the adapter from becoming a killer for your laptop, and what to look for when buying a charger?
Functions
The power supply for a laptop is a device responsible for the full operation of the gadget from a household electrical network. It converts and stabilizes the incoming voltage. You often come across this in everyday life: today not a single more or less complex device is operated without a stabilizer. In addition, the adapter charges the laptop battery.
Take care of “mom”!
Despite the familiar appearance, the device and characteristics of the devices may differ significantly. As for the characteristics, it is especially worth paying attention to the following:
- Output voltage – output (V);
- Output amperage (current) – output (A).
In the first case, the voltage should not differ from that provided by the laptop manufacturer: if it is lower, this will be accompanied by unstable operation of the gadget and undercharging of the standard battery; and if it is higher than the specified value, the laptop will probably burn out (“motherboard” - for sure). And “mother” must be taken care of, you know this from childhood.
Now regarding the second point: the performance should not be lower than the technical requirements of the laptop, otherwise the power supply will burn out. At least the good news is that in this case the laptop won’t do anything at all. By the way, the device indicators that will be needed when choosing a power supply can be found on the bottom panel of the laptop case - there should be a special sticker there.
As for the remaining characteristics related to power supply, they are, as a rule, universal. Therefore, I will not pollute your already broad and transparent horizons. Let me move on to the external differences.
“Fedot, but not that one”
No, no, the plug for all charges is identical. It's different for some domestic markets, but you'll notice it right away. By the way, there are adapters for such a plug if, when leaving the States, you took with you the most expensive thing - a laptop.
But the plug, whose task is to fit softly and tightly into a special socket on the end panel of the laptop, is different for adapters. It depends on the design features inherent in a particular brand.
Since it is not always possible to visually catch the differences, and there is no time to wait for the world’s laptop manufacturers to agree on unifying the hole for the plug, we can only rely on the label on the power supply case. In addition to the information I have already mentioned, there is something else there.
Adapter Label
Have you made sure that the characteristics of the device meet the requirements of the laptop, but still have doubts about the plug configuration? Then it’s worth finding out the adapter model and its markings. Using this data, you can check the compatibility of the charger with the gadget.
The easiest way to do this is through the catalog of this online store: it has the widest range of power supplies that I have come across. And besides, there you can contact a specialist online who will promptly advise you.
What else?
You can look for an adapter identical to the old one by its marking, again. But it often happens that the label on the old power supply is not saved. Such is the fate of this device - to lie on the floor, under human feet, or to get caught in the teeth of a pet. Then you need to take the laptop label as the source of initial information and select a suitable charger based on its labeling.
The need to purchase a charger may arise in several cases: if the previous one breaks down and in order to have a spare one, for example, at work. It is very convenient to have several chargers. After all, carrying a heavy laptop from one place to another, which does not become lighter from the power supply, is a dubious pleasure.
So how do you choose the right charger?
Several other factors should be noted
Unfortunately, not all laptops work with non-original power supplies. Therefore, before buying a charger, search for information on the Internet and consult with specialists. If you have just such a laptop, then charging will simply prevent it from discharging further, but it will not charge the battery either. In this case, there is only one way out - to find the original device.
Not worth it connect the laptop to electrical networks with unsuitable characteristics (voltage or frequency). Under no circumstances should you disassemble the charger yourself and try to repair it (unless you are an electrician). It’s better to take him to specialists - maybe they can bring him back to life. You should keep the charger clean and ensure that it does not overheat. Of course, you should not spill liquid on the power supply. Therefore, it is not recommended to eat or drink near your laptop. If the charger is not in use, it is better to unplug it.
You should also connect the charger correctly: First plug the plug into the laptop connector and only then into the socket.
If you follow all the care rules and choose the right model, the charger will serve you for a very long time.
Based on materials from the site www.notestore.ru.
