Recautions power adapter

Posted by admin on August 28th, 2014

First, power adapter (hereinafter referred to as the power) of the nominal voltage and current is what does this mean? First, the nominal general power supply voltage is the open circuit output voltage is not connected to any outside load when no current output voltage, it can also be understood to limit this voltage is the power supply output voltage.For HP Envy X2 Laptop AC Adapter

For the case of a power regulator’s internal use of the active component, even if the mains voltage fluctuations, and its output is a constant value, as the market generally small transformer, such as the Walkman and the like with the power, if the mains fluctuations, the output of the power supply will not follow fluctuations.

In general, the true no-load voltage ordinary power adapter and not necessarily exactly the same nominal voltage, because the characteristics of the electronic components can not be completely the same, so there is some error, the error is smaller, the higher the conformance requirements for electronic components , the cost of production is high, so the price will expensive.

In addition, with regard to the nominal current value, regardless of any power supply has a certain resistance, so when the power supply output current when the voltage drop generated internally, resulting in two things, one is to produce heat, so the power will be hot, and the other one is led to the output voltage decreases, the equivalent of internal consumption.

Second, are the same nominal voltage of the power supply, the output current is different and can not be used on the same books?

Supply voltage, the output current is different and can not be used on the same books. HP Laptop AC Adapter. The basic principle is that a large nominal current of the power supply can replace a small nominal current of the power supply. Estimated that someone would think so, I feel great nominal current of the power will burn the books, because the current big thing. How much is actually the current situation at the same voltage depends on the load, Oh, and think about the physical junior high school will know.

When the books when the high-load operation, the current bigger, when the books go into standby, the current is smaller, a large nominal current of the power supply has sufficient current margin. Conversely, someone with 56w 72w power supply instead of using them is also no problem, because the power adapter is usually designed to leave a margin, load power must be less than the electrical power, so that instead of in general use is feasible, but the rest of the power headroom rarely, once you pick up a lot of books peripherals, such as two usb hard drives, cpu running at full speed and then, and then there is a base above to a CD-ROM drive at full speed to read the disk, plus the same time charging the battery, estimated to be dangerous, you should feel free to feel the power is not already boiled eggs. So it is best not to use a small current power instead of high-current power supply.

Third, exactly the same machine, someone else’s power gentle, and I always very hot, why?

Let us not doubt your power problem, take a look at your books are doing, is not like the above said two USB hard disk, CPU running at full speed, hard disk read and write crazy, CD-ROM drive at full speed to read the disk, while charging the battery, loud place the music, the screen brightness maximum, wireless card has been detected signal and so on, make good use of power management, according to the task reasonable adjustments books working condition is very important.

Fourth, much higher than the nominal voltage of the power my laptop battery voltage will not hurt, right?

First, we must know is that the power supply to the laptop battery to power the books are different. Output of the battery powered, the battery is pure DC, clean enough, the battery voltage is neither possible nor necessary to design very high, the chemical characteristics of lithium batteries determines the output voltage of a power-saving core only at 3.6V, so many batteries are based on three series of the way, 10.8V will become very popular battery voltage. The nominal value of the integer multiples of some battery 3.6V slightly larger than some, such as 3.7V or 11.2V so, in fact, in order to protect the battery.laptopacadapter.com.au.

Power supply, the situation is more complex, you first need to add the voltage regulator further filtering to ensure stability in the power performance is not a good situation, after the voltage regulator is divided into two parts, power supply all the way to the books work, another way to charge the battery with the same battery power when the power supply to that part of the books, and that part of the need to charge the battery through the battery charge control circuit can only be applied to batteries, the control circuit can be very complex, so the supply voltage must be greater than the batteries have sufficient capacity to supply a voltage to the charging control circuit of each unit. Finally, the real core of the voltage applied to the electrical power supply will never be your nominal voltage. Rest assured.

Recommendation to buy Laptop AC adapter

Posted by admin on August 19th, 2014

Choose the right brand
Many are cutting corners online selling substandard products, the normal use of what should be no problem, once an accident occurs it will burn your laptop, saved tens of thousands of pieces of the block was burnt notebook harm than good, (jerry common there are standard practice chaotic power, such as real only 19V3.42A, AC Adapter For Toshibabut standard 19V4.74A, this will lead the charge very slowly, or even damage the battery and notebook computers. still put some protection removed, this is more terror, unexpected will burn off the laptop.)

Under the circumstances suggest that you have sufficient funds, you can buy a professional brand Toshiba PA3755E-1AC3 AC Adapter (that is, only a professional brand for notebook charger, rather than what kind of power do so single-minded brand of professional products for batteries and will not laptop damage, and advanced protection circuitry.) such Icharger, Acharger (AATUU brand), etc. (However, these brands are sold in Europe and America, the domestic retail rarely found)

Points clear purpose
Wants to household and office use to sell a home to buy (AC use),Toshiba PA3755E-1AC3 AC Adapter you want to use the car, you buy a car, you want to use on the plane with a car on the basis of a aircraft head on it. Home, car, airplane, wants to take into account, to buy a combo or triple. But if you do not want a computer bag and more weight, and you can put one in the house, put a car, office, put one, so you can not bring bring, plug to plug go, more convenient, but also to the people around him with .

Distinguish between voltage, current and connector
Look at the original laptop is which brand, the label behind the original chargers to write how much V, the number of A (usually written on the back OUTPUT), charger connector is probably the round or square, or porous, his heart probably do a few, they are not buying the wrong even been fooled.

For instance, your wife is 18.5V 3.5A charger output 18.5V That must buy, as for the current higher than 3.5A all OK. But if your business is best not to 18.5V recommended, although you can charge the special circumstances of emergency can be recharged, a long time will damage the battery and notebook computers. That voltage must be accurate (not the way high or low), the current can be high (but the higher the more expensive).
www.laptopchargeradapter.co.uk

Some personal insights into laptop battery misunderstanding

Posted by admin on August 18th, 2014

I do not intend to develop into experts in the majority of notebook users, it is not necessary, I just want to bring some of the most vulnerable to clarify the misunderstanding and give the right perspective and practices. Thinking not keep up with changes in the battery.

Misunderstanding 1: laptop computers need to buy it back again three times in order to activate the battery charge and discharge.
Unless you buy a notebook computer is more than one year inventory of products, otherwise we do not need to do so, Dell XCMRD Laptop Battery ,because now the battery when the batteries in the factory had already been activated, while the batteries in the package into the notebook when the battery has been a rather in the activation test, so you get the hand of the batteries, has long been active ever, and do three charge-discharge process was an increase in unnecessary battery depletion.

Misunderstanding 2: The first charge must be sufficient enough for 12 hours.
This is an early who do not have the battery control circuit of the Ni-MH battery model is applicable, but for now has a smart charge and discharge control circuit of notebook batteries, it was a joke, when the notebook computer After the battery is full, the charge current will be automatically cut off, even if you continue to charge 120 hours, the state would not be any change, in general, even the slowest charging machine, six hours is completely filled, and the remaining “charger” is just a waste of their time. Instead, the time to get new machines should first get a rechargeable power shine.dell-laptop-battery.

Misunderstanding 3: The battery requires regular calibration once a month and complete charge-discharge.
For the memory effect of a strong nickel-metal hydride battery, which is an essential task, but for lithium batteries, the cycle is too frequent, and Li-ion battery, although not completely eliminate the memory effect, but has greatly reduced the memory effect, if you use the battery is very frequent, then you should discharge the battery to the relatively low (about 10 ~ 15%), re-charging, but if the discharge that not even the machines they can not (0 ~ 1%), belongs to the lithium batteries have greater depth of injury discharge , in general, once every 2 months to do such an operation on it. If you rarely use the battery, then every 3 months as long as the first such operation on it.

Misunderstanding 4: Conduct calibration can enhance the battery capacity of the so-called correction.
Is that when the actual capacity of the battery and control circuit in the record of capacity not the same, the right to conduct a depth of battery charge and discharge operation, so that control circuit record, bringing them closer to the actual battery situation, this is a manifestation of the operation of the battery instead of the real capacity to enhance the capacity of key factors here is the actual capacity of the battery if the battery’s actual capacity than the control circuit is higher volume record, correction can make the battery appear to increase the capacity, and If the battery’s actual capacity than the capacity of the record control circuit is lower, then the correction will reduce the capacity of the battery looks, which is why many people argue the reasons for adjusting the results, please remember that the true correction is to make the battery capacity of rendering them remove the battery and the deviation between the control circuit, as demonstrated by the capacity will increase or decrease,www.laptop-adapter-shop.com this is the state of the battery itself, rather than determined by your correction. Because the correction is likely the battery discharge when the depth of damage, capacity, but declined significantly. Many manufacturers provide a battery calibration procedure carried out, there is Windows version and BIOS version, it is best to use these procedures to correct, Windows version that can be carried out while working, BIOS version can not be like this.

How to disassemble laptop power adapter

Posted by admin on August 15th, 2014

Staged Reading
Laptop power adapter are fully sealed design of small size, and its power consumption is generally up to 35W ~ 90W, so the higher the internal temperature, feel the power adapter will be hot, especially in the hot summer, touching work. Because of this, the failure rate relative to the laptop power adapter other components is still relatively high. After the power adapter is damaged, buy a brand new a few hundred dollars to spend, go to the secondary market Amoy also need a hundred dollars. In fact, many power adapter damage is not serious, a little knowledge to understand some users can try to repair the circuit

Tools / materials
electrician knife, hammer, screwdriver, soldering iron, knife and so on.

Steps / methods
1.1 Up and down the notebook power adapter cap for injection package or with a strong glue, and without any screws, so generally only with violence to crack. However, if done correctly, disassembled completely restored to their original power adapter, not carefully observed almost do not see open traces.

2.2 Cut the power adapter is placed on the lateral side of the white paper, cut along with the electric knife blade cover the gap between the upper and lower power adapter, and then struck with a hammer electric knife knife blade (Figure 1), so that electric knife from the adapter between the upper and lower lid inside. In different locations up and down the adapter cover the gap between the tip along with the electric knife slit paddling, when a certain part of the upper and lower lid first split, the tip depth, then slowly up and down the lid separate adapter.Asus G73Jh Laptop AC Adapter

3.3 Then open the housing of the power adapter, you can see the outside of the adapter circuit package has a copper shield, using a knife to open art paper tape shielding layer, and then the two electric soldering iron welding shield and open internal circuit board connections point (see below), you can remove the shield.Asus AC adapter.

4.4 Also separated between the shield and the circuit board layer thick rigid plastic film (Figure 4), the then art knife open, you can see the board “true colors” of the

How Do Laptop Battery Maintenance

Posted by admin on August 11th, 2014

If you are willing to do is put in place to battery once a week for about a year, Asus G55 Battery, it is still 60% ~ 70% of the production capacity, the battery is probably my own way, to see whether the battery is feeling more and more emaciated

Myth One: The laptop bought it back and forth three times need to charge – discharge, in order to activate the battery charge and discharge
Myth Two: the first charge must be sufficient enough for 12 hours
Myth Three: The battery requires regular calibration once a month full charge – discharge.
Myth Four: correct the error can improve 5 battery capacity.

Compatible battery charger can also be used in a laptop, the battery part of the problem of love and hate, it provides the ability to use a laptop to move, but the ongoing work often compare a few days or even a week mobile phones and MD, Asus G55 Battery,laptop battery life is still gnashing of teeth, if the phone’s battery can only use 8 hours million people will be condemned to do, but this will lead to a laptop which is already outstanding proud to say that the fastest laptops slow components , in addition to the keyboard should be a battery switch, so there is such a joke: Intel, through investment and technology involved in supporting new battery technologies. ”

For us, lithium batteries have been good enough in the 1990s, Intel’s Eden, director of mobile platforms marketing, said: “It’s like a battery, in order to improve young teenage sexual relationships and the same: Everyone is talking about it is, but no one has been completed. “battery maintenance has been a hot topic, laptop users, but in fact, the final analysis many errors, from two aspects, one is” thinking does not keep up with the nickel-metal hydride batteries the pace of change to lithium battery “and the other one is more funny, from the phone, because the phone is actually the first contact most users to use the device repeatedly rechargeable batteries, and therefore taken for granted some of the mobile phone habits extension to the laptop body.www.laptopbatterysale.co.uk/asus-g55.html

What Is a Universal Power Adapter?

Posted by admin on August 7th, 2014

Universal power adapters are devices that make it possible to connect a power supply to various devices in just about any setting. There are adapters for handheld devices, laptops, and even for various types of household appliances. The need for a universal power adapter usually comes about when an individual is traveling to another country, where the type of electrical outlets and the kind of power supply must be converted in order to function properly with the device. One of the more common examples of a universal power adapter would be the universal laptop power adapter.Dell OCM161 .Adapters of this type normally come with plug attachments that make it possible to connect the power cord to different configurations of wall outlets. Since various countries use different designs and standards for electrical outlets, anyone who travels to a foreign location is likely to need these attachments in order to be able to use the laptop without relying solely on battery power.

Along with making sure that the plugs are compatible, a true universal power adapter will also help to convert the type of current available within the country to a type that is compatible with the electronic device. For example, Dell OCM161 Laptop AC Adapter.if a handheld device or laptop requires direct current to operate properly, but the individual is traveling in a country where alternating current is the norm, the adapter will compensate for the difference in voltage and cycle of the electrical current. This makes it possible to use the device without damaging the components.

Universal power adapter kits for travelers are relatively easy to purchase today. Many include a selection of plugs that match the sockets used in most countries around the world, notably the United States, the United Kingdom, and most of Europe and Asia. In the event that the plugs included in the power adapter kit does not match with a local type of plug, it is usually a simple matter to purchase an appropriate plug locally.

Along with adapters for use by travelers, people who are living abroad for a period of time may also make use of a universal power adapter on any household appliance he or she is taking along. Adapters of this type can be used with stereo equipment or other expensive electrical items that the individual wishes to have access to on an ongoing basis. When purchasing adapters for this purpose, it is important to make sure the particular appliance will function properly with an adapter, since some electrical appliances will not work at full efficiency even with the use of an adapter plug to convert the power supply.
www.laptop-adapter-shop.com

Construct power adapter

Posted by admin on August 4th, 2014

1 varistors, which functions when the external voltage is too high, the pressure-sensitive resistor rapidly becomes small, the pressure-sensitive resistor in series with the fuse is blown, thereby protecting the other circuit is not burned.Lenovo ThinkPad T410

2 Fuse, specifications 2.5A / 250V, when the current in the circuit is too large, blown fuses to protect other components.

3 inductance coil (also known as choke), the main function is to reduce electromagnetic interference.

4 rectifier bridge, specifications for D3SB, the role is to 220V alternating current into direct current.

5 filter capacitor, specifications for 180μF / 400V, the role is to filter the DC to AC ripple, making the circuit more reliable.

6 op amp IC (Integrated Circuit), the protection circuit, voltage regulator important part.

7 temperature probe, power adapter for internal temperature probe, when the temperature is higher than a predetermined value (different brands of power adapter, and its set temperature threshold is slightly different), the protection circuit will cut off the adapter’s voltage output, thereby protecting the adapter is not damaged.

8 power switch, is one of the core components of switching power supply, switching power supply can “opening and closing” to work, the switch contributed.

9 switching transformers,One of the core elements switching power supply.

10. secondary rectifier function is the low-voltage alternating current into low-voltage DC. In Lenovo’s power adapter, rectifier often work in parallel by two high-power, in order to obtain a larger current output.

11 secondary filter capacitor, specifications for 820μF / 25V, there are two low-voltage direct current from the filter effect of the ripple. In addition to these components, the circuit board as well as adjustable potentiometer and other RC components.
www.laptopchargeradapter.co.uk

What Is a Universal Power Supply?

Posted by admin on August 1st, 2014

universal power supply is a device that steps 110 or 220-volt AC household current down and converts it to DC so it can power an electronic device, appliance, or some other electric equipment.Such as, Samsung PN3014 Adapter. It consists of a transformer encased in a box fitted with a wall plug on one end and a cord on the other. There is a switch on the box that allows the user to select the output voltage, usually in a range between 1 and 20 volts, and connected to the output are a series of diodes to convert the AC current to DC. A universal power supply comes with a variety of output jacks, each designed to fit the input of a device that will run on one of the selected voltage settings.

Laptops and household appliances, as well as audio and video and other other electronic equipment, come with their own mobile power supply so you can run them from a household circuit. The transformer and diodes in the power supply are necessary to protect the delicate electronic circuitry in these devices, and losing the power supply, an all-too-frequent occurrence, renders them inoperable. There is no standard input voltage that is appropriate for all devices, so having a universal power supply on hand is an easy way to regain the use of one if its power supply has been lost.

A transformer has an input and output coil, both wrapped around a central core, and the ratio of the input voltage to the output voltage depends on the relative number of turns of these two coils. The switch on a universal power supply alters the output voltage by changing the position of the point of connection to increase or decrease the number of output coils. The diodes convert the current from AC to DC by passing it in one direction while canceling the current in the return direction.

While a universal power supply can be used to power a variety of different equipment, there isn’t one that is appropriate for all devices. Before purchasing one as a substitute for a laptop power supply or a supply for a sensitive piece of electronic equipment, buyers should check the range of voltages for which it is rated, as well the output jacks that come with it, to make sure it will work. The power supply output current rating should also be the same as that of the device for which it will be used.
www.cheapbatterystore.com.au


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