Adapter adaptation mode

In computer programming, an adapter pattern (sometimes called a wrapper style or wrapper) adapts the interface of a class to what the user expects. An adaptation allows classes that normally cannot work together because the interfaces are incompatible, by wrapping the class's own interface in an existing class.The adapter mode is mainly used when the method defined in the interface cannot meet the customer's requirements, or the name of the method defined in the interface or the method interface conflicts with the customer's requirements.Two types of modes: • Object Adapter Mode - In this adapter mode, the adapter holds an instance of the class it wraps around. In this case, the adapter calls the physical entity of the wrapped object. Class Adapter Mode - In this adapter mode, the adapter inherits from the implemented class (general multiple inheritance).Huawei switching power adapter: Power adapter is also called external power supply (switching power adapter). It is a small portable electronic device and electronic power supply transformer. It is generated because in actual life, electronic devices are often not available. Direct use of household electricity, because the home uses a 220 volt supply voltage, and the general supply voltage is generally required for electronic products.

2018/12/05

What should I do if the notebook power adapter is hot?

Power adapter heating solutionPower adapter heat is unavoidable, but it can speed up its heat dissipation and prevent its temperature from rising.1. Select switch components with small voltage drop and low loss. The heat dissipation area should be as large as possible. The switching power supply above 100W should have a metal perforated casing or a cooling fan.2. Try to place the power adapter in a place with good ventilation and heat dissipation. Never put anything like a book on the power supply.3. When using the notebook in a high temperature environment, place the notebook power adapter in a place that is not exposed to direct sunlight and ventilation; do not place the power adapter near the heat dissipation air outlet of the notebook, otherwise the heat of the power adapter will not be dissipated. Go out and absorb some of the heat.

2018/12/05

Is the notebook power adapter very hot?

It is normal for the power adapter to heat up. The conversion efficiency of the power adapter to the power supply can only reach about 75-85 at present. When the voltage is converted, some of the energy is lost. Except for a small part of the loss in the form of waves, most of them are emitted in the form of heat. . The greater the power of the power adapter, the more energy is lost, and the heat generated by the power supply is greater.At present, the power adapters on the market are sealed with fire-resistant and high-temperature plastics, and the heat generated inside is mainly transmitted through the plastic casing. Therefore, the surface temperature of the power adapter is still quite high, and the maximum temperature may even reach about seventy degrees.

2018/12/05

Can the notebook power adapter be universal?

Notebook power adapters are not universal, and the reasons for not being universal are as follows:First, the interface is differentMost laptop power adapter brands have different interfaces, which means that other brands of power adapters cannot be plugged into your laptop at all. The difference in interface is relatively safe, because at least you will not plug the power adapter that does not match the current or voltage to power the laptop, causing damage to the computer hardware.Second, the voltage is differentDifferent brands of laptop power adapter voltages are not the same, for example: IBM is generally 16V, Dell is 20V, Hp is 18.5V, Sony is 19.5V and so on. It can be seen that even if the power adapter interface is the same, you cannot use different brands of laptop power adapters for power supply.Third, the current is differentThe current of different brands of laptop power adapters is also different, for example: IBM is 4.5A in general, 3.34A in Dell, 2.7A in Hp, and 4.1A in Sony.In fact, the voltage and current of the same brand notebook power adapter are not the same. Therefore, even if you use a power adapter between the same brand of laptops, you must confirm the voltage and current specifications.

2018/12/05

Can the notebook power adapter be universal?

Notebook power adapters are not universal, and the reasons for not being universal are as follows:First, the interface is differentMost laptop power adapter brands have different interfaces, which means that other brands of power adapters cannot be plugged into your laptop at all. The difference in interface is relatively safe, because at least you will not plug the power adapter that does not match the current or voltage to power the laptop, causing damage to the computer hardware.Second, the voltage is differentDifferent brands of laptop power adapter voltages are not the same, for example: IBM is generally 16V, Dell is 20V, Hp is 18.5V, Sony is 19.5V and so on. It can be seen that even if the power adapter interface is the same, you cannot use different brands of laptop power adapters for power supply.Third, the current is differentThe current of different brands of laptop power adapters is also different, for example: IBM is 4.5A in general, 3.34A in Dell, 2.7A in Hp, and 4.1A in Sony.In fact, the voltage and current of the same brand notebook power adapter are not the same. Therefore, even if you use a power adapter between the same brand of laptops, you must confirm the voltage and current specifications.

2018/12/05

What is the role of the switching power adapter?

Battery powered, the output of the battery is pure DC, very clean, the voltage of the battery is neither possible nor high design. The chemical characteristics of the lithium battery determine that the output voltage of a battery can only be around 3.6V, so Many batteries are connected in a three-stage series, and 10.8V has become a very popular battery voltage. Some batteries have a nominal value slightly larger than an integer multiple of 3.6V, such as 3.7V or 11.2V, etc., in order to protect the battery. 2. The switching power adapter is a power supply conversion device for small portable electronic devices and electronic appliances. It is generally composed of a casing, a power transformer and a rectifier circuit. It can be divided into an AC output type and a DC output type according to its output type; It is wall-mounted and desktop. Widely used in telephone handsets, game consoles, language repeaters, walkmans, laptops, cellular phones, etc.

2018/12/05

Adapter or converter?

1-adapterTo operate the unit without a motor, the adapter is sufficient. Example: Charging a camera, camcorder or laptop, using a computer, etc. 2-converterIf you plan to use an appliance with a motor, such as a hair dryer, razor, etc., you will need a converter.

2018/12/05

Lenovo ThinkPad Battery and Adapter

Reinvigorate your laptop with a high-quality Lenovo ThinkPad battery. We have hundreds of Lenovo batteries and chargers, including Lenovo IdeaPad, ThinkPad and ThinkPad Edge.Our Lenovo ThinkPad batteries are designed for precise fit and compatibility. We use the highest quality lithium-ion batteries and components that charge faster, last longer, lighter weight, lower quality and lower quality. Each battery is tested, inspected and supported with a 1-2 year warranty and a 30 day money back guarantee.

2018/11/30

What is the use of a laptop adapter?

In order to charge your laptop's battery, you require direct current or DC. However, all plug points will supply alternating current or AC instead. The function of the laptop adapter is to convert this readily available AC to DC in order to charge your laptop's battery. The internal components of this adapter (or 'brick') consist of several power electronics including rectifiers, regulators and filters and also a transformer, in order to carry out AC-DC conversion. This transformer is fairly heavy and accounts for most of the weight of the adapter.As a result of this design, you can use the same laptop adapter in any country (regardless of the type of AC used)  and still charge your laptop without any issues, since the adapter SHOULD convert an AC signal of any voltage and frequency (within reason) to output the required DC. I myself have been using a laptop purchased in the US (120 V, 60 Hz) in India (230 V, 50 Hz) for 3 years, with no problems, requiring only a pin adapter to allow the US plug to fit into an Indian plug point.

2018/11/15