What is the adapter of the expansion card and what is it used for

Increase your phone's storage space!

Power adapter is also called external power supply (switching power adapter), it is a small portable electronic equipment and electronic appliances power supply subdevice, it is due to the fact that in real life, electronic devices are often not able to directly use household electricity, because the home is used 220 volts of power supply voltage, and the general electronic products require a power supply voltage of about 5 volts to 20 volts.

Therefore, the role of the power adapter is crucial (module power supply), especially if you go to the United States and other countries, the voltage is different from that of China, so you need a 220V to 110V transformer.

With it, we can use these electronic products conveniently and safely. So, what does a power adapter do?

The composition and application of the power adapter (how the power adapter works).

Power adapters are commonly found on small electronics such as mobile phones, LCD monitors, and laptops. It is generally composed of a shell, a power transformer and a rectifier circuit, which can be divided into AC output type and DC output type according to its output type; According to the connection method, it can be divided into wall type and desktop type. It is widely used in sub-parent machines, game consoles, language repeaters, walkmans, laptops, cellular and other equipment.

Power adapter for computers.

Power adapters are widely used in industrial automation control, military equipment, scientific research equipment, LED lighting, industrial control equipment, communication equipment, power equipment, instrumentation, medical equipment, semiconductor refrigeration and heating, air purifiers, electronic refrigerators, liquid crystal displays, LED lamps, communication equipment, audio-visual products, security, computer cases, digital products and instruments and other fields, and have a non-negligible role in these fields. So what are the functions of the power adapter?

The role of the power adapter.

Generally speaking, the power adapter functions as a transformer and rectifier. The home AC is 220V, and our computer is 12V DC (as if it is), so it is certain that the power adapter is a transformer and rectifier. The adapter is a transformer, so we should all know that AC 220V transforms voltage through the transformer and DC through the rectifier, there is consumption here, and these consumption will be converted into heat, so it is normal for the power adapter to heat up.

The transformer is made of silicon steel sheets, and after the transformer is energized, it generates magnetic flux, which will cause the silicon steel sheets to produce forceful action, resulting in a humming sound, which is normal. However, the sound of overheating is not normal, and there are many reasons: 1. The alternating current voltage is unstable.

2. The chip is damaged. 3. Inter-turn short circuit. 4. Component damage and so on.

By the way, the role of the adapter is to convert alternating current into direct current electronics.

The power adapter space is generally built-in, the general adapter volume is not small, the small volume of the machine is external, in order to save space, the second is convenient to replace, the adapter is used for the mains, the voltage is relatively high, and it is more dangerous to put the inside of the machine.

The power adapter is a device that outputs 220 volt alternating current through voltage transformation, rectification, filtering, and voltage stabilization, and is suitable for the working power supply of electrical appliances; The function is to provide the voltage, current and stability required by the electrical appliances, so that the corresponding electrical appliances can work safely and stably. Widely used in portable electronic equipment and electrical appliances; Without a power adapter, the appliance will not work properly.

In fact, the power adapter is simply a transformer, such as 5V required by mobile phones, 9V required by routers, 12V required by displays, etc., to provide DC power and voltage required for electronic products, as well as rectifier voltage stabilization, filtering and protection circuits.

An adapter is an interface converter, which can be a stand-alone hardware interface device that allows a hardware or electronic interface to be connected to other hardware or electronic interfaces, or it can be an information interface.

Specifically, in computers, adapters are typically built into cards that can be plugged into slots on the motherboard, and the adaptation information in the cards is exchanged with the processor and devices supported by the adapter; When two rotors of the same type but with different capacities need to be equipped in the same centrifuge, consider placing an adapter in the large capacity tube bore to achieve a tube bore suitable for small volume tubes.

I don't know what adapter you're talking about?

The adapter is, in layman's terms, a kind of intermediate connection.

The purpose of the special function of the accessories, the use of this kind of accessories is to simplify the hardware design of the host, increase the versatility and flexibility of the host.

Let's take an example: the graphics card is the most used adapter, because we can see too many types of displays, their resolution and refresh rate will be different, if the display output port on the motherboard is prepared for various types of displays with different output signals, then I am afraid that this circuit board will be larger than the motherboard, and this motherboard can be used with several types of displays at most in a lifetime, and the excess is wasted, so people reached a consensus: the motherboard only provides a display interface, The specific display type is a separate display card to form a hardware connection form of the motherboard graphics card display, which not only saves the circuit of the motherboard, but also adapts to the needs of the display by replacing the graphics card as needed.

This graphics card is also known as a graphics card.

Commonly used adapters include power adapters, network card adapters, network adapters, and print adapters. Wait a minute.

The power adapter is a power conversion device for small portable electronic equipment and electronic appliances, which is generally composed of shells, transformers, inductors, capacitors, control ICs, PCB boards and other components.

Its working principle is converted from AC input to DC output; According to the connection method, it can be divided into wall type and desktop type. It is widely used in security cameras, set-top boxes, routers, light bars, massagers and other equipment.

Usage: Generally speaking, the power adapter is used as a transformer and rectifier. The household AC is 220V, while our computer is 12V. Therefore, it is certain that the power adapter is a transformer and rectifier. The adapter is a transformer.

Power adapter is a power conversion device for small portable electronic devices and electronic appliances, which is generally composed of shells, transformers, inductors, capacitors, control ICs, PCB boards and other components.

The role of the power adapter.

Generally speaking, the power adapter functions as a transformer and rectifier. The household AC is 220V, while our computer is 12V. Therefore, it is certain that the power adapter is a transformer and rectifier. The adapter is a transformer.

Adapter: Portable electronic equipment and power supply conversion equipment for electronic appliances.

Refers to the power transformer of the computer, which will step down the voltage of 220 due to the device used by the computer.

Convert AC to DC to power the computer.

Transformer. Simply put, it's a charger.

Provide a stable low-voltage DC power for laptops (generally between 12 and 19V).

Power adapter use: switching power supply products are widely used in industrial automation control, military equipment, scientific research equipment, LED lighting, industrial control equipment, communication equipment, power equipment, instrumentation, medical equipment, semiconductor refrigeration and heating, air purifiers, electronic refrigerators, liquid crystal displays, LED lamps, communication equipment, audio-visual products, security, computer cases, digital products and instruments and other fields.

The power adapter of a laptop is a device that converts the 220V alternating current provided by the power supply department into low-voltage direct current for powering the laptop. After the low-voltage DC output by the power adapter enters the computer, it is further processed through the power circuit of the computer motherboard to generate multiple sets of voltages for the operation of memory, CPU and other components; In addition, the power provided by the power adapter can also be used to charge the laptop's battery through the relevant charging control circuitry.

To put it simply, it is to convert the handover to DC.

China's mains power is 220V alternating current, while notebooks use direct current, which requires an adapter to rectify, filter, and stabilize voltage, and finally form the direct current we need.

First, it is used to charge the notebook, and the second is to supply power to the notebook, and the voltage is stabilized and reduced.

Power and charge your laptop. Equivalent to power supply, mobile phone charger.

It's just for charging, boss.

It can charge the laptop battery and power the laptop.

A disk array (RAID) is a large disk group composed of a large number of cheap, smaller, more stable, and slower disks, which use the additive effect of individual disks to provide data to improve the performance of the entire disk system.

Mainly used for servers. Because of the huge data throughput, the speed of the hard disk can no longer keep up with the CPU demand, so the group RAID to increase the speed of the hard disk. In layman's terms, the read speed of a hard disk can reach 100MB in seconds, and after multiple hard disks are combined into a whole column, it can reach many times that of 100MB s.

Attached: The mainstream structure of disk arrays:

The disk array is connected to the host directly outside the host or over the network as a stand-alone system. A disk array has multiple ports that can be connected by different hosts or different ports. A host connects different ports to the array to increase transfer speeds.

As with the current single-disk integrated cache for PCs, a certain amount of buffer memory is provided inside the disk array to speed up interaction with the host. The host interacts with the disk array's cache, and the cache interacts with the specific disk data.

In the application, some commonly used data needs to be read frequently, and the disk array finds out these frequently read data according to the internal algorithm and stores them in the cache to speed up the host to read these data, and for the data that is not in other caches, the host wants to read it, and the array directly reads and transmits it to the host from the disk. For data written by the host, it is only written to the cache, and the host can complete the write operation immediately. It is then slowly written to disk from the cache.

Group RAID requires that kind of thing, (specifically refers to SCSI and IDE hard drives, SATA hard disks are not used).

It's just for connecting a few more hard drives.

Also called a disk array card, it is used for RAID!

Bluetooth adapter: The interface converter for Bluetooth devices for digital products.