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The basic function of the power supply in the computer is to convert 220V alternating current into the low-voltage DC power required by the computer, generally it is difficult to see the effect on the performance of the whole machine intuitively. But as a source of power, power
supply is to convert a 220 v ac to a DC power available for the PC. Generally, the power supply converts an AC to 12 V, 5 V, or 3.3 v dc. 12 volt DC is used to drive a device with a motor, such as a hard drive and a CD-ROM drive. 5 V and 3.3 V output are used to
monitor output voltage and current exceed rated value, IC through feedback circuit feedback back to adjust the internal control circuit, control Q1 and Q2 duty ratio, always keep output constant voltage and current supply CPU. Maintenance process The first manifestation of the failure is that the CPU core voltage (VCore) is not normal. And there are two things: The first is: CPU core voltage High or Low: Voltage bias High
not exceed 3.5mA. Temperature requirements refers to the chassis power supply internal temperature should not exceed 65 ℃. Electronic interference is divided into two kinds of conduction interference and radiation interference, conduction interference through the power line transmission, the frequency of 30 MHz below, the main interference audio audio section, s
supply fan Power Interface is incompatible can also be modified by itself (note positive and negative) Next, don't rush to load the power into the chassis and test the power supply fan to see if it will turn. 1, plug the power
processors, and their power consumption has reached more than 80 W, while each SCSI hard disk consumes more than 10 W, therefore, the power required by the server system is much higher than that of the PC. Generally, a 300 W power supply is enough for the
NBSP; In addition to the CPU and graphics cards, other parts add up to about 100W, so everyone in the purchase of power should be mainly considered CPU and video card power, (if the integrated graphics only need to add 10-20w can be, that is, 120W, and then only need to consider CPU power), CPU power
1. DSP6000 power-on sequence Problems DSP is indeed a freak. Two common problems are: (1) unable to connect to the CCS development environment; (2) burning chips. I am using TMS320C6713 now. The following experiences are based on DSP6000. Other series may be different. It seems that the performance of the chip has changed, and the chip has never been burned. However, CCS still often cannot be connected. Some of the reasons are related to the stability
If the CPU is a strong heart of the computer, then the power is its energy center. The power supply is not valued by the users in PC computer, but it is the product that is often neglected, but it provides stable and continuous current for all computer equipments, such as CPU, memory, optical drive and so on. If there
If the CPU is a strong heart of the computer, then the power is its energy center. Power in the PC computer is not the user's attention, but it is this often overlooked product, but for the CPU, memory, optical drive and other computer equipment to provide a stable, continuous current. If the power
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
concerned, the power supply stability of the bridge rectifier. Third, the power supply fan In the process of power supply, the fan plays an important role in the configuration of heat dissipation. Disperses the piece only to ci
How to see the quality of the power supply As the source of the power of the computer, the quality of the power supply determines the stability of the whole computer. But most people pay more attention to the other parts of a PC
, but because of the use of more advanced technology, at the same time the high cost of materials, so the price is also high; the passive PFC power factor is low, the cost is lower and the price is relatively cheaper, Because the passive PFC is a large inductance, the weight is heavier, so it needs to be fixed by four screws. You only have to look at the power supply
Faulty model: Great Wall C-I5271 type display; Fault Cause: Lightning strikes; Fault symptom: no display. The user reported that when the machine was struck by lightning, it made a "bang" sound. Analysis and maintenance: the power fuse (f901/3.15a) has been burned out and is black inside the casing. This indicates that the power supply has a serious short
5G technology, the power consumption and cost problems of far-reaching optical power supply are enough for it to drink a pot, 5g a pot 5G is getting closer and closer, but not all places have it, and it will not be abrupt. The first version that comes to people's eyes is not the fastest version of the technology. In reality, 5G is the first to show in a densely
"Fault phenomenon" a computer recently connected to the power on its own boot, sometimes inexplicably on the boot. "Failure analysis and processing" causes this kind of failure may have the following: (1) First check whether the computer in the BIOS setup will be timed to boot function set to "Enabled", so that the computer in the set time automatically boot. (2) Again
first step of the test is run, the devices in the Internet cafes are opened in batches, and the full load power of Internet cafes is gradually achieved. It is best to run the whole load for more than 24 hours, so as to test the real performance of the Power wiring system. During full load operation, if the air switch is automatically tripped or the fuse is burned out,
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 s
switches. Vswitch troubleshooting: Power Supply Fault Fault description: After the switch is enabled, the switch is not operating normally, and the POWER indicator on the panel is not on, and the fan does not rotate. Fault cause: the fault is usually caused by unstable external power
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