d d maintenance supply

"buzz" sound. If the fan is not working properly, it may burn the motor for a long time, causing damage to the whole switching power supply. For the above Power fan sound reasons, usually need to do the following maintenance work. The Power box is the easiest place to assemble dust, if the power supply fan issued a larger voice, generally every six months to re

This article has three parts: CPU Main power supply circuit composition, CPU single-phase power supply circuit Working principle (take HIP6021 power IC as an example), the CPU single-phase power supply Circuit maintenance flow detailed explanation. Thank the Shenzhen Red Police computer

Fault model: Gold Great Wall c-i5271-type display; Fault reason: lightning; Failure phenomenon: no display. Users reflect that the machine was struck by lightning, issued a "bang" a sound. Analysis and overhaul: Open the chassis found that the power fuse (f901/3.15a) has been burned, and the internal blackening, indicating that the power supply has a serious short-circuit failure. The power supply adjust

To ensure the long-term normal operation of the Frequency Conversion Power Supply, necessary inspection and maintenance should be timely, and the inspection and maintenance methods should be appropriate. Inspection and maintenance are divided into two aspects: Routine inspection and

Many enterprises, factories and other customers have been using the inverter power after buying it back, and will not perform maintenance on the power without using the inverter power supply, maintenance and so on, because doing so will lead to the short service life of the inverter power supply, how can we avoid these

A Lenovo G31T-LM motherboard, CPU core voltage, reset, PG, North Bridge all power supply is not normal, memory voltage 1.4V significantly lower, and later found that North Bridge power supply is the memory of MOS tube power supply, measuring memory power supply MOS tube is not a problem, MOS tube g pole attached to an

note Aspects 1. Regularly dust the Power box. The Power box is the most dusty parts, but also regularly add lubricating oil to the computer fan to avoid the fan to produce a lot of noise, the health of people is not good. 　　Note Aspects 2. Recommended to buy a computer when choosing a good quality power supply, such as Air Ka, the Great Wall, and some of the daily life of some computers are somehow restarted also with the power

Power is like the heart of a computer, which plays a key role in stabilizing the power supply. As long as the power supply plug in, there will be work, even if not on, the internal standby power is still to work, so the computer power is also more prone to faulty hardware, especially some inferior power supply. Small series has been engaged in a year of power

"Internet +" to promote the traditional enterprise replacement, in particular, the need for it talent increasingly abundant, throughout the recruitment site, there are smart links, 51job, hunting and other large recruitment sites in China, There is no web site dedicated to it talent needs , services, recruiting, and communication for it professionals. Often see QQ group to send recruitment information and send part-time information such as a lot of people, we have a strong desire for talent

cost is low. The Distributed Power Supply removes the power room and battery room, so that the DC power supply equipment is closer to the communication load, which not only reduces the loss of DC power transmission, but also improves the system reliability, at the same time, the cost of installation, operation and maintenance is greatly reduced. 2.2 disadvantage

The adjustment tube of the linear power supply is working in a magnified state, so the heat is generated and the efficiency is low (about 35%). A large heat sink is required, and a large power frequency transformer is also required, the transformer will be larger when multiple voltage outputs are to be made.The adjustment tube of the switch power supply is working in saturation and cutoff state, so it has a

Developers must understand the concept of switching power supply (features of the Power Supply Module) 1. Concept of switching power supply The switching power supply (Power Supply Module) is an energy converter. As a power supply