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There are three general computer power: ATX, MICRO and TFX, three power supply output voltage is the same, but the shape is not the same, ATX is our common desktop computer; and MINI MICRO is commonly used as a desktop chassis, which is small Chassis; TFX is just starting up a desktop computer used is a rectangular type, but now there are fewer, because he is not very good heat dissipation, the power can not do much. MICRO power as there are shortcomings in this regard. FLEX FLEX power supply applications (ITX-1U power supply) using a very wide range, including industrial, commercial and individuals; for example: MINI-ITX computer .ITX chassis, POS machines, IPC systems, servers, workstations, industrial computers diskless workstations. . one computer, TV, etc. One PC FLEX Power Appearance size: 150 * 82 * 40MM, has become: ITX-1U power supply Introduction FLEX (ITX-1U power supply) is evolved from a small 1U power supply, the appearance is still You can see the shadow of a small 1U, but it has little noise compared to 1U power supply, heat, high efficiency, small size and characteristics. rated power is generally divided into 150W, 180W, 200W, 250W four specifications FLEX Power (ITX -1U Power) parameters: Input voltage: 90-236V (wide voltage input) or the use of 110 / 220V (manual switching voltage input) Efficiency:> 78% PG Signal: 100-500 Operating temperature: 5 ℃ to 50 ℃ Storage Temperature : -40 ℃ to 70 ℃ Humidity: 20% to 85%, non-condensing Storage Humidity: 10% to 95%, non-condensing FLEX power supply (ITX-1U power supply) Internal 4CM cooling fan with multiple protection: with overcurrent , overvoltage, short circuit multiple protection which best cost-effective powerful mega power FLEX power supply, power supply 250W trillion FLEX dual fan design effectively control the noise to a minimum .200W and 150W, 180W power supply with intelligent temperature trillion FLEX control to control the fan. Cooling fan with nanometer fan, intelligent temperature control and fan assembly Nano is the most the most advanced noise control design. Scope FLEX power supply (ITX-1U power supply) in strict accordance with the design and manufacture FLEX12V power supply design specifications, widely for AMD series CPU, INTEL series CPU VIA full range of MINI-ITX motherboard, the elite low-power motherboard, Intel 810/845 chipset Celeron CPU All other embedded ITX motherboard and ATX Micro ATX motherboards and other computer ATX power supply working power, the role of the 220V AC power into DC 5V internal use computers, 12V, 24V ATX ??power supply features: Compared with AT power supply, ATX power supply increases the "+ 3.3V, + 5VSB, PS-ON ?? "Three output. Where "+ 3.3V" output is mainly for CPU use, and "+ 5VSB", "PS-ON" embodies the ATX power output characteristics. ATX power supply main feature is that it does not use the traditional mains switch to control the power supply is working, instead of using a combination of "+ 5VSB, PS-ON" to achieve the power to open and close, as long as the control "PS-ON" signal level changes, you can control the power on and off. When the power is turned "PS-ON" less than 1V volts, greater than 4.5 volts when the power is off. And power is not the same as AT, ATX power supply in addition to the line made some improvements, the most important difference is that ATX power shutdown itself does not completely off, but maintains a relatively weak current. At the same time it uses the current added a power-management feature called Stand-By. It allows the operating system directly to the power management. With this feature, users can achieve soft-off directly through the operating system, but also networked power management. Such as when the computer is off, it can send out the signal to the Modem computer through the network, then the monitoring circuit will send an ATX power supply + 5V SB unique activation voltage to turn on the power to start the computer, enabling remote boot. ATX power supply There are two versions, one is ATX1.01 version, the other is ATX2.01 version. Version 2.01 and version 1.01 of the ATX power supply cooling fan in addition to the position is not the same, but their activation currents are different. 1.01 only 100mA, version 2.01 there 500mA ~ 720mA. This means that the version 2.01 ATX power supply will not be as "allergy", often influenced by external voltage fluctuations on their own as version 1.01 EPS EPS power supply to restart the computer, also known as EPS, EPS emergency power, fire emergency power, stands for Emergency Power Supply (emergency power supply), it is today an important building for power protection and fire safety and the use of a emergency power supply. It mainly consists of input and output units, charging module, part of the battery pack, inverter, monitor, output switching devices. Widely used in building lighting, traffic lighting, power, industrial and mining enterprises, fire elevator (fire pump) and other fire equipment. UPS is an uninterruptible power supply (uninterruptible power system) abbreviation, is the ability to provide continuous, stable and uninterrupted power supply of important external devices. UPS according to the principle into reserve, on-line and line-interactive three categories. UPS name suggests, it is a such a machine, it stops the supply of electricity in the city when the power supply can be maintained for a period of time, so that people have time to save, and then calmly shut down the machine. That is the DC power supply DC power supply, (direct current DC mean, mean changes in current direction current does not occur) is a device to maintain the circuit in the formation of steady current. Such as batteries, batteries, DC generators. AC is alternating current acronym, meaning alternating current, referring to the current direction changes. DC to DC power supply, power positive and negative are the same (except section transformer, but also need to increase the rectifier filter circuit) AC to AC power, in China, the AC mains to 50Hz per second speed change is negative (in the absence positive and negative). Our standard AC power supply predetermined frequency is 50 Hz. The most common use of electrical lights, motors are AC. In practice, alternating with the symbol "; ~"; Fig. Power must be as small as possible in order to give the system's other features leave more space. Second, the power to effect the higher the better. In practice, the power is not the most energy-intensive, but a microprocessor, but still need to further improve the effectiveness of the power supply, because the higher the effect, the smaller the required heat sink, so as to further reduce system space. For 100W-200W power supply is to achieve 90% effectiveness is not very realistic. High power every 1% increase in power efficiency, heat can be reduced by 10%, the degree of cooling required for power will have a great difference. Third, of course, cost is always the most important factor, both raw material cost or manufacturing complexity. Simple design is an important factor. Finally, consider the function. Control and alarm signals, and similar devices are current and to maintain stable performance under a variety of AC input and so are very important. mini-ITX power supply slowly spread since the Internet, the computer has become the people learn, work, and entertainment-based tools. Especially in the energy crisis, global warming, the world is concerned about the case of green energy, MINI-ITX computer more and more popular in the market, it is not just only by the industry, customers, more into the the average consumer's hands, almost all of the host computer and hardware manufacturers and chassis manufacturers are scrambling to launch its own ITX computers and related products. may not take long time, MINI-ITX computers will replace the existing ordinary desktop computers. Only from the viewpoint of energy saving, compared with ordinary desktop, MINI-ITX computer can save at least a day of electricity would save a small fortune in electricity bills ITX ITX computer power classification a year doing low-power decided not to require bulky, miniaturization has become a fashion direction of its development. ITX computer motherboards, hard drives, power supplies and other hardware which is characterized by a small footprint. ITX computer power should be much smaller than the average PC power supply size from sizes to points classification can be divided into the following DC-DC ITX power supply version (A) DC-DC ITX power version: by the external power adapter voltage 12V supply into DC-DC ITX power supply built into version + 12V -12V + 5V + 5VSB + 3.3V to ITX computer power supply. Its characteristics are small. The main part of the adapter fever generally rated at 60W, 90W, 100W But the disadvantage is unable to meet the low-power high-profile ITX PC ITX-1U power supply (b) ITX-1U power: It is a specially tailored ITX ITX computer power for the size of 150 * 82 * 40MM.. It is evolved from a small 1U power, in appearance can still see the shadow of a small 1U, but it solves a host of noise, heat and other problems. In the most common ITX computer case. Both for general ITX computer can also be Using the high-profile ITX computer on the rated power is generally divided into 150W, 180W, 200W, 250W four specifications Shin TFX power supply (C) Shin TFX power: It can be seen from the name of its traditional TFX power there is quite closely. It can be said that a TFX power supply (to be described later to TFX power supply) in size with a thin "waist" of ITX computer power dimensions:.. 180 * 60 * 48MM Short TFX Power (iv) Short TFX Power: It is a power supply from the TFX evolved in size relatively short ITX computer power dimensions:... 130 * 65 * 65mm and Shin TFX power them on the ITX chassis are rare mainly because the use of these two Specifications Power of ITX chassis manufacturers are not too many Micro Power (v) Micro Power:. ITX-Micro Power general application on a compatible motherboard and Micro ATX motherboard ITX small ITX chassis. Because of the volume slightly larger exterior dimensions Micro Power: 125 * 100 * 63.5MM, so the use of Micro ITX computer power supply chassis is relatively large. Accurate it is just a transition to ITX Micro ATX PC power supply TFX power of a PC (vi) TFX Power: ITX-TFX power supply is the same with Micro Power can be seen on a compatible Micro ATX motherboard and small ITX case ITX motherboard . to its presence TFX power Appearance size: 175 * 85 * 65 ITX computer use TFX power supply as the ITX chassis also belongs to a Micro ATX computer transition to a power supply SFX ITX computer power supply (vii) SFX Power: ITX-SFX power equally Micro Power, TFX power supply as the Micro ATX-compatible motherboard and small ITX case ITX motherboards can see size: 145 * 125 * 78 also belong to the transition to a Micro ATX PC ITX computer of a power supply in a different location, the number of its output wires vary, but can not do without this colorful 9 colors: yellow, red, orange, purple, blue, white, gray, green, black . Sound PC power supplies are equipped with the 9 colors of the wires (the current mainstream power supplies are eliminating the white line). Yellow: + 12V (standard range: + 11.40- + 12.60) Blue: -12V (standard range: -10.80--13.20) Red: + 5V (standard range: + 4.75- + 5.25) White: -5V (standard range: - 4.50--5.50) Orange: + 3.3V (standard range: + 3.14 + 3.45) Green: P-ON (power switch side)