d b supply sale

jinhetian Jinba ATX-S388 power saving Master, professional design for Internet cafes, not only powerful power, but also wide voltage design, effective to prevent computer damage caused by voltage problems. The standard power-saving Master also features a patented technology that adds an energy-saving power supply interface. When the computer is shut down or in standby mode, peripherals connected to this interface can be automatically closed, this is

Design of power supply in high-speed circuitThe design of power supply in high-speed circuit is probably divided into two kinds, one is lumped architecture and one is distributed architecture. A lumped architecture is a power input that generates a variety of required voltages. As shown in 1. This architecture will increase the number of DC modules, so the cost is not controllable, the PCB area also needs t

Seven misunderstandings of Supply Chain Management Compiled by amt liu Yu Supply chain management is a very broad term and is often misunderstood. It has not yet been fully explained in many different opinions. What is supply chain management? supply chain management is defined as a coordination strategy with the goal

In the last few installments, we have installed the main parts of the chassis, which will teach you the power source for installing your computer. One, from the appearance of recognition power supply Probably a lot of people know that the main power supplies are: at power supply and ATX power supply (the Micro ATX is the ATX Branch) two broad categories. 1. At

This is a new review on trends in Ecology Evolution, which has an impact factor of more than 10, and has a very heavy weight in ecology. My graduate program is about evolution, which belongs to molecular ecology, population genetics, and the apparent heredity of the hotspot. So concise topic, immediately attracted me, but I do not understand supply and demand what exactly mean? Because the abstract talks about the status of the controversial epigenet

Nowadays, switching power supply has replaced linear regulated power supply and is active in the electronic power design field. People gradually realized that the switch power supply has changed the technical direction of the electronic design industry. In the power supply design, safety is always the first priority. I

1-7-2. Transition Process of switching power supply circuitWe have analyzed all the switching power supply circuits and seldom mentioned the concept of circuit transition. In fact, in the switching power supply circuit, the changes of current and voltage in the circuit are all in the circuit transition process. However, to make the analysis simple, the circuit tr

What is the most commonly heard in life? Production supply chain, power supply chain, also as a huge Chinese search field also has its own industrial chain, search engine in the middle platform, the terminal of the supply chain is to search users, the source of the supply chain (site) is China's 200 webmaster services

One day, I repeatedly started the machine several times, and then pressed the power key, but it didn't respond. After my check, it turns out that the power supply is not working and there is no voltage on all the feet.At first, I thought the fuse was burned out due to frequent start, but I took the power off and saw that the insurance was good. Measured with a multimeter, the circuit is indeed powered on. Then, the DC voltage after the rectification b

Study on the application of Poe power supply (I.) Introduction to Guan Jinssong PMP 2010-4-2 Poe POE refers to the transmission of data signals to some ip-based terminals (such as IP telephones, wireless LAN access point APS, network cameras, etc.) while the existing Ethernet CAT.5 cabling infrastructure is not changed Ethernet It can also provide DC-powered technology for such equipment. Poe technology can ensure the existing structure wiring securit

Troubleshooting vswitch faults: for power supply faults and port faults, in the Internet era, you will often encounter troubleshooting vswitch faults. The following describes how to resolve vswitch faults, including how to solve power supply faults. No matter how good the performance of a switch device is, there will be potential faults. Just like people, no matter how healthy they are, there will always be

What is a voltage-adjustable power supply? What is the principle of voltage adjustable power supply? The voltage adjustable power supply is based on the regulated switching power supply to increase the voltage, so that the output voltage can be adjustable in a large range (generally 0 V ~ A type of power

The services currently provided by Internet cafes, such as web browsing, online games, online movies, distance education, and other basic services, are all related to the Internet, the quality of the network directly determines the viability of Internet cafes. Therefore, how to plan a high-quality network environment is a key point that Internet cafe operators must consider. Internet cafe Integrated Wiring accounts for a large proportion of the factors, mainly including: power

The main working process of UPS power supply is filtering and rectifying inverter. In addition, it also includes many auxiliary units, such as charger and battery, microprocessor, and communication interface. Because the UPS power supply is installed between the device and the mains supply, it can filter out the electromagnetic interference in the power grid, the

Q : What are the problems caused by insufficient power supply? A: If the power supply is insufficient, IPC may be unable to start, Infrared night vision switch failed, NVR may be hard to boot and other abnormal problems, please be sure to use the specifications required power. Q : Is it possible to use centralized power supply? A: Can, but due to

1, the hard disk appears bad track. Bad power is easy to cause the hard drive to appear false bad, this kind of fault can be repaired by software generally. In such cases, first check the power supply. If the problem is confirmed to be a power supply, the new power supply with reliable quality and stability should be replaced. 2, CD-ROM optical disk reading perf

form of heat,In this way, engineers will have a great challenge in design, for example, if the loss is eventually transmitted in the form of heat, thenThe circuit needs to add a larger heat sink, the result is the volume of the power supply becomes larger, and the efficiency of the machine is very low.If switching power supply in switch mode, it can not only improve efficiency, but also reduce the design d