What is the power source?

Question 1: What common power supplies can be divided into switching power supply, inverter power supply, AC regulated power supply, DC regulated power supply, DC/DC regulated power supply, communication power supply, module power supply, frequency conversion power supply, UPS power supply, EPS emergency power supply, purification power supply, PC power supply, rectifier power supply, customized power supply, heating power supply, welding power supply/arc power supply, electroplating power supply, network power supply and electric power supply?

Question 2: What are the classifications of power supplies? Common power sources are classified as follows:

Switching power supply, inverter power supply, AC regulated power supply, DC regulated power supply, DC/DC regulated power supply, communication power supply, module power supply, frequency conversion power supply, UPS power supply, EPS emergency power supply, purification power supply, PC power supply, rectifier power supply, customized power supply, heating power supply, welding power supply/arc power supply, electroplating power supply, network power supply, electric operation power supply, adapter power supply, linear power supply and power controller.

Special power sources are classified as follows:

Security power supply, high-voltage power supply, medical power supply, military power supply, aerospace power supply, laser power supply and other special power supplies.

Question 3: How many types of power supplies are there? What is the difference? two kinds

One is a voltage source and the other is a current source.

Voltage source is a kind of power supply device that can provide relatively stable voltage to external circuits.

Current source is a kind of power supply equipment, which can provide relatively stable current to external circuits.

Question 4: What are the requirements for the power selection of the computer? The main requirements are the number of pins on the power supply and motherboard. This must correspond.

Question 5: What are the types of power supplies? What products and fields are used? What is a custom power supply? This question is difficult to answer. Any electronic product with power supply needs to change from AC voltage to DC voltage, including our common TV sets, computers, DVDs, stereos, switches, routers and so on. For example, if you look at the most common computers, the power supply size is the same (there are of course several standards). At least, the size of the side connected with the power plug, the position of the screw hole and the line sequence voltage of the output line are the same. This is the role of standardization to ensure the compatibility of equipment from different manufacturers. However, some equipment need to use special power supply for design reasons, and the power supply will be designed according to the needs of the equipment.

Question 6: What is network power supply? Overview of network power control system: Network power control system was officially listed in early 2008, also known as RPDU, Powerbox, intelligent PDU, intelligent power control system and rack power distribution system. It is a new concept and product for the domestic market. Including network power controller hardware equipment and centralized management control platform, independently developed and produced by ASHI Hengan. It has a rich product line of Powerbox series system, including standard horizontal 1U/8 product line, vertical hanging 0U/ 16 product line and wireless single-port product line, and can be customized and tried out at the same time. It was officially developed in early 2008 and passed the national audit. The system particularly highlights the "intelligent" management concept. By introducing new communication means such as Ethernet, multi-channel wireless network and voice service, the intelligent management control module is added, and the self-developed control chip is used to form a power distribution unit that can be remotely controlled and planned. It completely covers the functions provided by conventional PDU and PCU devices in the market at present, and especially highlights the concept of "intelligent management and remote monitoring". This product aims to provide remote power control and multiple power protection for electronic equipment such as routers, switches and servers and other important electrical equipment in the Internet data center. One or more electronic devices connected with PowerBox can be turned on or off independently through communication means such as the Internet and multi-channel wireless networks, and remote management can be realized by adding an intelligent management control module and using a self-developed control chip. At the same time, it also has the function of providing timely and detailed port-level power supply information, refining the management authority to each power supply port, remotely controlling and intelligently managing the electrical equipment, realizing the IP control of the equipment, and querying the current, voltage value and temperature and humidity in real time, breaking the market situation that similar products can only query the overall power supply situation of one equipment. It also provides a powerful security standard, which can provide super password support, socket-level permissions, group-level permissions, and divide access control lists by sockets. It can run safely in stand-alone mode, or it can be integrated into external authentication and authorization services. At present, it is China and the first advanced remote power control product with "conditional trigger task" in the world besides American Avocent products. It can provide secure TCP/IP access and monitoring capabilities, solve the problem that electrical equipment crashes or key tasks cannot work normally during equipment operation, and detect the normality of services such as POP3, HTTP and ICMP in real time and get delayed. Once an error is found, the equipment restart service will be provided, and the user will be informed after the restart, which will effectively solve the problems of manual misoperation and excessive delay, and truly ensure that the equipment management work is 7*24*365 throughout the year, and the equipment point is unattended. The characteristics of the network power control system are: out-of-band remote: management control information and data information are transmitted through different physical channels, which are independent and do not interfere with each other. Out-of-band management can easily realize remote management of equipment power supply. It provides a common network tool for TCP/IP protocol, which can remotely query, switch or restart the power supply of the controlled equipment anytime and anywhere through the Web interface, and at the same time reduce the possibility of the target equipment shutting down due to unexpected errors. Independent control: each device connected to the controlled socket can be inquired and managed independently (some models have independent insurance, which can be used as overload protection to prevent power surge and will not affect other devices when the power supply is abnormal); Cluster management: A system can manage and control any server or other electrical equipment within its authority, and you can realize unified management of equipment on the simple interface of the system. Intelligent monitoring: The unique domestic conditional control function (which can set time tasks and trigger tasks) combined with active detection technologies (TELNET, HTTP, HTTPS, POP3, FTP, SMTP, ICMP) can shut down, restart or alarm according to the set planned tasks and trigger conditions, and make records. Once the network equipment is found to be down, it can be automatically restarted according to the preset scheme; You can also set a timed restart to release server memory; Monitor the power, temperature and humidity of the equipment, and eliminate the dead angle of heat dissipation or refrigeration at the equipment point. Unattended: not simple or heavy ... >>

Question 7: What are the main brands of computer power supply? Foreign brand

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pirate ship

Saalmann

ANTEC (antec)

Domestic brand

-

the Great Wall

Huntki

colorful

Century star

Kuxuan supreme

Segotep

Extremely frozen cold ling (GT)

Silverstone Racing Road

telegraphic transfer

Big buffalo

Foxconn (Foxconn)

the best

Your so-called miscellaneous brands (not very well-known brands)

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Rongshengda (R- Senda)

Niutou (Niutou)

Haiyun (Haiyun)

NESO (NESO)

Xigang

Kupden (Kupden)

OCZ

Ai Shuo (J & ampm)

Cheng Dongfang

SAMA (sama)

All Korea (FSP)

Shunda (Shunda)

power plant

Meng Qi

Gongshi

Weixun

Pass the flag

Mindong

Shou Chang (L&; c)

Baiyue

Kang Shu

Barzen

Colda

Xing Yuquan

Haimei

Jinpin

Ma Xin

Microorganism

Oppen (Oppen)

Miki

Huakang pc

Sinbad (the character in Arabian Nights) (= Sindbad)

Bai Dun

Sanyang

CEMO (CEMO)

Jinhetian

Technical exhibition

delta

New front (CCIVO)

HKC

Golden Elephant

Silicon Valley Elf

Jin Yingli

Xindonglin

Wudong technology

Question 8: What are the main protection functions of computer power supply? The protection function of power supply is mainly overvoltage and overcurrent protection. The relationship between them is that when any power supply fails, it may make the output voltage or output current out of control. In order to prevent the user's load from being damaged, the power supply is generally equipped with overvoltage and overcurrent protection. For some loads, such as resistive loads, when the power supply fails, the voltage on the load may rise sharply, but the rising value of current may not exceed the overcurrent protection value. In this case, overvoltage protection is appropriate. For example, when working at 50V, the voltage protection value can be adjusted to 55V. If the power supply fails, as long as the voltage rises to 55V, the power supply will automatically cut off the voltage output. When some loads are capacitive, due to the parallel connection of large-capacity electrolytic capacitors, the current may increase greatly when the power supply fails, but the voltage increase is not obvious. At this time, the overcurrent protection element inside the power supply will be started first, and the power supply will automatically cut off the output. The overvoltage protection value is set manually by the potentiometer on the panel. However, the over-current protection value cannot be set manually, and has been fixed in the machine, which is generally 1.2 ~ 1.5 times of the rated current. It should be noted that the overvoltage protection will start immediately and quickly, and the overcurrent protection will have a delay of about one second. This is because when the power supply works normally, if the load of the power supply is suddenly short-circuited, the instantaneous current output by the power supply is several times or dozens of times of the rated current value, which can be considered as current shock, far exceeding the value of overcurrent protection, but at this time, overcurrent protection is not expected to work. It is hoped that the voltage will automatically return to normal after the short circuit is relieved. Therefore, when designing overcurrent protection, it is necessary to avoid the current shock when suddenly short-circuited, and only consider starting overcurrent protection after the output overcurrent reaches a certain value. Overvoltage and overcurrent protection is aimed at internal faults, so since it has happened, it should not automatically restore power supply. If it must be reproduced, it must be closed and then opened. Short-circuit protection, current alarm and short-circuit alarm functions are user-oriented. If the current has dropped and the short circuit has been eliminated, the corresponding alarm sound will be automatically released and the voltage will automatically return to normal.

In addition to the above two protections, there is also a screen protection function in the power option.

General computer power supply has these three functions.

Individual power supplies with strong functions will also be equipped with OVP (overvoltage protection), UVP (low voltage protection), OCP (overcurrent protection), OPP (over-power protection), OTP (over-temperature protection) and so on.

Question: What's good about 80plus power supply? First of all, the 80PLUS power supply with strict conversion rate test has higher conversion efficiency than ordinary power supply, and the power supply is more energy-saving, which can directly save consumers a lot of electricity expenses.

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Question10: What kinds of power supplies are there for LED lamps? What is the difference? What is the difference between the power supply of LED lamp and the driving power supply? The so-called power supply refers to the source of power supply, and the output voltage can be measured by an electric meter. The so-called driver is a power conversion circuit that converts a fixed power supply into another power supply with different voltage or/and different forms (referring to AC or DC) and supplies it to electrical appliances with specific power requirements. So after connecting the power supply, the drive itself becomes the power supply. The power adapter commonly used in electronic products is also an external driver of electronic products. LED chips work in low-voltage DC, and generally need power drivers to provide stable voltage and safe current. LED lights have built-in and external drivers. When connected to a specified power supply (such as AC power supply, battery, etc.), you can use the LED lamp with the built-in driver. ). For LED lamps that need an external driver, it is necessary to add a suitable power adapter (or external driver) to the original power supply (such as mains electricity, batteries, etc.). ) provides the required working power for the LED chipset.