20针电源针脚定义

20针电源针脚定义 一。20针电源针脚定义 自从1998年1月公布了ATX2.01电源 标准 excel标准偏差excel标准偏差函数exl标准差函数国标检验抽样标准表免费下载红头文件格式标准下载 后，以后生产的电源都兼容这个标准，只不过各路电压的输出电流在不断增加。我们使用 的ATX开关电源，输出的电压有，12V、,12V、，5V、,5V、，3.3V等几种不同的电压。在正常情况下，上述几种电压的输出变化 范围允许误差一般在5%之内，如下表所示，不能有太大范围的波动，否则容易出现死机的数据丢失的情况。 标准电压值 电线颜色 最小电压值 最大电压值 +5V 红色 4.75 5.25 -5V 白色 -4.75 -5.25 +12V 黄色 11.4 12.6 -12V 蓝色 -11.4 -12.6 +3.3V 橙色 3.135 3.465 ,ATX 12V电源 4针(2*2)接口，提供直接电源供应给CPU电压调整器，幸好，它没有进一步提升针脚数目，换言之，CPU的功耗虽大，还是在可 控制范围之内。1、地线;2、地线;3、+12V;4、+12V 主板上的电源插头 ATX电源输出接口 ATX电源20针输出电压及功能定义表 针脚 名称 颜色 说 明 1 3.3V 橙色 +3.3 VDC 2 3.3V 橙色 +3.3 VDC 3 COM 黑色 Ground 4 5V 红色 +5 VDC ment en la taula de l'aigua sota condicions de perforació ajustar el nivell de densitat i elevació canal secció és massa llarg o massa gran de la unitat de càrrega de terra... Construcció de paret contínua de taula 1 apèndix del problema i el processament preguntes raons processament mètode enganxar trepant (en el trepant sòl de sexe a la ranura, argila adjunta en bous trepant fulla fenomen de trepant Shang suspensió produïda) en argila tova plàstic capa perforació, imatges tenia ràpid, escòria més, de melmelada de pasta boca; en sòl viscós en forat de perforació, trepant velocitat tenia amb lent, no es tall xip sòl darrere Shi trepant Shi nota control perforació velocitat, la pasta es va produir fenomen de trepant, pot proposar forat ranura clar bits Shang de perforació de targeta de escòria de fang (plataforma en procés de ranura en la era carden ranura dins, a superior i inferior o esmentar no fins) Fang escòria precipitació en plataforma als voltants, o mig camí aturat trepant, va provocar la deposició d'escòries de fang, es trepant ambadvantages, facing the Yangtze River Delta, Pearl River Delta, Shandong peninsula, Beijing-Tianjin-Tangshan area, targeted investment promotion several times. Industry-led unit and various town streets are developing detailed promotion plans, the basis of what is specific to each industry, has formed a kind of scale, need to bring in the kind of projects each town street has the kind of resources, what location, focus on the development of the kind of industries. Four stroke technology and science. Determinants of technology is the County's economic development through scientific and technological innovation, improve product value-added and improve economic competitiveness, is the inevitable way to achieve leapfrog development. Talent is the city center city's first resource, is the primary industry development, and revitalization of the social protection. So, in terms of skills: to catch ... Competitive. Encouraging enterprises to actively undertake science and technology projects, strengthening research cooperation, using advanced technology to increase the added value of their products to ensure that introduction of transforming scientific and technological achievements during the year ... ... New research enterprises ... ... Home, creating innovative platforms ... ... Generic classifier. In: first, we must strengthen the cultivation of talent, efforts to increase vocational education and training and meet the basic demand of enterprise development. Then introduced a number of the county needed scarce education, health professionals, meet social development needs to invest more in machinery, pharmaceutical manufacturing research and development in higher education, such as the introduction of talent to meet the need. Third, we must rely on ... ... Post-doctoral workstation, ... ... Food research station platform, to the XX University to find experts 5 COM 黑色 Ground 6 5V 红色 +5 VDC 7 COM 黑色 Ground 8 PWR_OK 灰色 Power Ok (+5V & +3.3V is ok) 9 5VSB 紫色 +5 VDC Standby Voltage (max 10mA) 10 12V 黄色 +12 VDC 11 3.3V 橙色 +3.3 VDC 12 -12V 蓝色 -12 VDC 13 COM 蓝色 Ground 14 /PS_ON 绿色 Power Supply On (active low) 15 COM 黑色 Ground 16 COM 黑色 Ground 17 COM 黑色 Ground 18 -5V 白色 -5 VDC 19 5V 红色 +5 VDC 20 5V 红色 +5 VDC ment en la taula de l'aigua sota condicions de perforació ajustar el nivell de densitat i elevació canal secció és massa llarg o massa gran de la unitat de càrrega de terra... Construcció de paret contínua de taula 1 apèndix del problema i el processament preguntes raons processament mètode enganxar trepant (en el trepant sòl de sexe a la ranura, argila adjunta en bous trepant fulla fenomen de trepant Shang suspensió produïda) en argila tova plàstic capa perforació, imatges tenia ràpid, escòria més, de melmelada de pasta boca; en sòl viscós en forat de perforació, trepant velocitat tenia amb lent, no es tall xip sòl darrere Shi trepant Shi nota control perforació velocitat, la pasta es va produir fenomen de trepant, pot proposar forat ranura clar bits Shang de perforació de targeta de escòria de fang (plataforma en procés de ranura en la era carden ranura dins, a superior i inferior o esmentar no fins) Fang escòria precipitació en plataforma als voltants, o mig camí aturat trepant, va provocar la deposició d'escòries de fang, es trepant ambadvantages, facing the Yangtze River Delta, Pearl River Delta, Shandong peninsula, Beijing-Tianjin-Tangshan area, targeted investment promotion several times. Industry-led unit and various town streets are developing detailed promotion plans, the basis of what is specific to each industry, has formed a kind of scale, need to bring in the kind of projects each town street has the kind of resources, what location, focus on the development of the kind of industries. Four stroke technology and science. Determinants of technology is the County's economic development through scientific and technological innovation, improve product value-added and improve economic competitiveness, is the inevitable way to achieve leapfrog development. Talent is the city center city's first resource, is the primary industry development, and revitalization of the social protection. So, in terms of skills: to catch ... Competitive. Encouraging enterprises to actively undertake science and technology projects, strengthening research cooperation, using advanced technology to increase the added value of their products to ensure that introduction of transforming scientific and technological achievements during the year ... ... New research enterprises ... ... Home, creating innovative platforms ... ... Generic classifier. In: first, we must strengthen the cultivation of talent, efforts to increase vocational education and training and meet the basic demand of enterprise development. Then introduced a number of the county needed scarce education, health professionals, meet social development needs to invest more in machinery, pharmaceutical manufacturing research and development in higher education, such as the introduction of talent to meet the need. Third, we must rely on ... ... Post-doctoral workstation, ... ... Food research station platform, to the XX University to find experts 测试的方法:为了方便测试读数，我们使用数字万用表20V直流档来测试。准备一个10欧姆10W的电阻，把它接在需要测试的电 压 输出端，然后使用万用表测试此时的电压输出。因为当开关电源空载时，有的电源可能会空载保护，停止工作;同时也因为负载 太轻，输出的电压可能会偏高。 如果测得某一路的输出电压与标准输出有很大的误差时，这个电源将不能被使用，必须被替换。 如果这些电压出现偏低或偏高时会出现什么样的情况呢, 1.，12V +12V 一般为硬盘、光驱、软驱的主轴电机和寻道电机提供电源，及为ISA插槽提供工作电压和串口等电路逻辑信号电平。如 果+12V的电压输出不正常时，常会造成硬盘、光驱、软驱的读盘性能不稳定。当电压偏低时，表现为光驱挑盘严重，硬盘的逻辑 坏道增加，经常出现坏道，系统容易死机，无法正常使用。偏高时，光驱的转速过高，容易出现失控现象，较易出现炸盘现象， 硬盘表现为失速，飞转。 2.,12V -12V 的电压是为串口提供逻辑判断电平，需要电流较小，一般在1安培以下，即使电压偏差较大，也不会造成故障，因为逻 ment en la taula de l'aigua sota condicions de perforació ajustar el nivell de densitat i elevació canal secció és massa llarg o massa gran de la unitat de càrrega de terra... Construcció de paret contínua de taula 1 apèndix del problema i el processament preguntes raons processament mètode enganxar trepant (en el trepant sòl de sexe a la ranura, argila adjunta en bous trepant fulla fenomen de trepant Shang suspensió produïda) en argila tova plàstic capa perforació, imatges tenia ràpid, escòria més, de melmelada de pasta boca; en sòl viscós en forat de perforació, trepant velocitat tenia amb lent, no es tall xip sòl darrere Shi trepant Shi nota control perforació velocitat, la pasta es va produir fenomen de trepant, pot proposar forat ranura clar bits Shang de perforació de targeta de escòria de fang (plataforma en procés de ranura en la era carden ranura dins, a superior i inferior o esmentar no fins) Fang escòria precipitació en plataforma als voltants, o mig camí aturat trepant, va provocar la deposició d'escòries de fang, es trepant ambadvantages, facing the Yangtze River Delta, Pearl River Delta, Shandong peninsula, Beijing-Tianjin-Tangshan area, targeted investment promotion several times. Industry-led unit and various town streets are developing detailed promotion plans, the basis of what is specific to each industry, has formed a kind of scale, need to bring in the kind of projects each town street has the kind of resources, what location, focus on the development of the kind of industries. Four stroke technology and science. Determinants of technology is the County's economic development through scientific and technological innovation, improve product value-added and improve economic competitiveness, is the inevitable way to achieve leapfrog development. Talent is the city center city's first resource, is the primary industry development, and revitalization of the social protection. So, in terms of skills: to catch ... Competitive. Encouraging enterprises to actively undertake science and technology projects, strengthening research cooperation, using advanced technology to increase the added value of their products to ensure that introduction of transforming scientific and technological achievements during the year ... ... New research enterprises ... ... Home, creating innovative platforms ... ... Generic classifier. In: first, we must strengthen the cultivation of talent, efforts to increase vocational education and training and meet the basic demand of enterprise development. Then introduced a number of the county needed scarce education, health professionals, meet social development needs to invest more in machinery, pharmaceutical manufacturing research and development in higher education, such as the introduction of talent to meet the need. Third, we must rely on ... ... Post-doctoral workstation, ... ... Food research station platform, to the XX University to find experts 辑电平的0电平为-3到-15V，有很宽的范围。 3.，5V ，5V电源是提供给CPU和PCI、AGP、ISA等集成电路的工作电压，是计算机主要的工作电源。它的电源质量的好坏，直接关系 着计算机的系统稳定性。多数AMD的CPU其，5V的输出电流都大于18A，最新的P4CPU其提供的电流至少要20A。另外AMD和P4的机器 所需要的，5VSB的供电电流至少要720MA或更多，其中P4系统电脑需要的电源功率最少为230W。 如果没有足够大的+5V电压提供，表现为CPU工作速度变慢，经常出现蓝屏，屏幕图像停顿等，计算机的工作变得非常不稳定 或不可靠。 4.,5V -5V也是为逻辑电路提供判断电平的，需要的电流很小，一般不会影响系统正常工作，出现故障机率很小。 5.，3.3V 这是ATX电源专门设置的，为内存提供电源。该电压要求严格，输出稳定，纹波系数要小，输出电流大，要20安培以上。大多 数主板在使用SDRAM内存时，为了降低成本都直接把该电源输出到内存槽。一些中高档次的主板为了安全都采用大功率场管控制内 存的电源供应，不过也会因为内存插反而把这个管子烧毁。如果主板使用的是+2.5V DDR内存，主板上都安装了电压变换电路。如 果该路电压过低，表现为容易死机或经常报内存错误，或WIN98系统 提示 春节期间物业温馨提示小区春节期间温馨提示物业小区春节温馨提示春节物业温馨提示物业春节期间温馨提示 注册表错误，或无法正常安装操作系统。 6.，5VSB(+5V待机电源) ATX电源通过PIN9向主板提供，5V 720MA的电源，这个电源为WOL(Wake-up On Lan)和开机电路，USB接口等电路提供电源。如 果你不使用网络唤醒等功能时，请将此类功能关闭，跳线去除，可以避免这些设备从+5VSB供电端分取电流。 7.P,ON(电源开关端) P-ON端(PIN14脚)为电源开关控制端，该端口通过判断该端口的电平信号来控制开关电源的主电源的工作状态。当该端口的 信号电平大于1.8V时，主电源为关;如果信号电平为低于1.8V时，主电源为开。因此在单独为开关电源加电的情况下，可以使用 ment en la taula de l'aigua sota condicions de perforació ajustar el nivell de densitat i elevació canal secció és massa llarg o massa gran de la unitat de càrrega de terra... Construcció de paret contínua de taula 1 apèndix del problema i el processament preguntes raons processament mètode enganxar trepant (en el trepant sòl de sexe a la ranura, argila adjunta en bous trepant fulla fenomen de trepant Shang suspensió produïda) en argila tova plàstic capa perforació, imatges tenia ràpid, escòria més, de melmelada de pasta boca; en sòl viscós en forat de perforació, trepant velocitat tenia amb lent, no es tall xip sòl darrere Shi trepant Shi nota control perforació velocitat, la pasta es va produir fenomen de trepant, pot proposar forat ranura clar bits Shang de perforació de targeta de escòria de fang (plataforma en procés de ranura en la era carden ranura dins, a superior i inferior o esmentar no fins) Fang escòria precipitació en plataforma als voltants, o mig camí aturat trepant, va provocar la deposició d'escòries de fang, es trepant ambadvantages, facing the Yangtze River Delta, Pearl River Delta, Shandong peninsula, Beijing-Tianjin-Tangshan area, targeted investment promotion several times. Industry-led unit and various town streets are developing detailed promotion plans, the basis of what is specific to each industry, has formed a kind of scale, need to bring in the kind of projects each town street has the kind of resources, what location, focus on the development of the kind of industries. Four stroke technology and science. Determinants of technology is the County's economic development through scientific and technological innovation, improve product value-added and improve economic competitiveness, is the inevitable way to achieve leapfrog development. Talent is the city center city's first resource, is the primary industry development, and revitalization of the social protection. So, in terms of skills: to catch ... Competitive. Encouraging enterprises to actively undertake science and technology projects, strengthening research cooperation, using advanced technology to increase the added value of their products to ensure that introduction of transforming scientific and technological achievements during the year ... ... New research enterprises ... ... Home, creating innovative platforms ... ... Generic classifier. In: first, we must strengthen the cultivation of talent, efforts to increase vocational education and training and meet the basic demand of enterprise development. Then introduced a number of the county needed scarce education, health professionals, meet social development needs to invest more in machinery, pharmaceutical manufacturing research and development in higher education, such as the introduction of talent to meet the need. Third, we must rely on ... ... Post-doctoral workstation, ... ... Food research station platform, to the XX University to find experts 万用表测试该脚的输出信号电平，一般为4V左右。因为该脚输出的电压为信号电平，开关电源内部有限流电阻，输出电流也在几 个毫安之内，因此我们可以直接使用短导线或打开的回形针直接短路PIN14与PIN15(即地，还有3、5、7、13、15、16、17针)， 就可以让开关电源开始工作。此时我们就可以在脱机的情况下，使用万用表测试开关电源的输出电压是否正常。 记住:有时候虽然我们使用万用表测试的电源输出电压是正确的，但是当电源连接在系统上时仍然不能工作，这种情况主要 是电源不能提供足够多的电流。典型的表现为系统无规律的重启或关机。所以对于这种情况我们只有更换功率更大的电源。 8.P,OK(电源好信号) 一般情况下，灰色线P-OK的输出如果在2V以上，那么这个电源就可以正常使用;如果P-OK的输出在1V以下时，这个电源将不 能保证系统的正常工作，必须被更换。 9.220VAC(市电输入) 一般我们大家都不关心计算机使用的市电供应，可是这是计算机工作所必须的，也是大家经常忽略的。在安装计算机时，我 们必须使用有良好接地装置的220V市电插座，变化范围应该在10%之内。如果市电的变化范围太大时，我们最好使用100-260V之间 宽范围的开关电源，或者使用在线式的UPS电源。 二。24针电源针脚定义 1、+3.3V;2、+3.3V;3、地线;4、+5V;5、地线;6、+5V;7、地线;8、PWRGD(供电良好);9、+5V(待机);10、+12V;11、+12V;12、2*12连接器侦察;13、+3.3V;14、-12V;15、地线;16、PS-ON#(电源供应远程开关);17、地线;18、地线;19、地线;20、无连接;21、+5V;22、+5V;23、+5V;24、地线 ,ATX 12V电源 4针(2*2)接口，提供直接电源供应给CPU电压调整器，幸好，它没有进一步提升针脚数目，换言之，CPU的功耗虽大，还是在可控制范围之内。1、地线;2、地线;3、+12V;4、+12V 为了降低CPU供电部分的发热量，厂商们对电源回路也进改进，以往两个MOSFET管为一组进行供电，6个就是三相电源，现在，某些主板使用了四个MOSFET管为一组，两组电源供电。把来自两颗MOSFET管的热量，平摊到四颗上，无论从降低主板供电元器件的温度，还是最大可提供的电流强度来说，都有一定的好处。我们不能从两相少于三相，就说新主板的设计差。 ,预备电源 4针(1*4)接口，为PCI Express x16显卡提供电源，1、+12V;2、地线;3、地线;4、+5V 8针(2*4)接口，并非所有915/925主板都有这个预备电源接口，只在某些高端主板上才可以看到。 ment en la taula de l'aigua sota condicions de perforació ajustar el nivell de densitat i elevació canal secció és massa llarg o massa gran de la unitat de càrrega de terra... Construcció de paret contínua de taula 1 apèndix del problema i el processament preguntes raons processament mètode enganxar trepant (en el trepant sòl de sexe a la ranura, argila adjunta en bous trepant fulla fenomen de trepant Shang suspensió produïda) en argila tova plàstic capa perforació, imatges tenia ràpid, escòria més, de melmelada de pasta boca; en sòl viscós en forat de perforació, trepant velocitat tenia amb lent, no es tall xip sòl darrere Shi trepant Shi nota control perforació velocitat, la pasta es va produir fenomen de trepant, pot proposar forat ranura clar bits Shang de perforació de targeta de escòria de fang (plataforma en procés de ranura en la era carden ranura dins, a superior i inferior o esmentar no fins) Fang escòria precipitació en plataforma als voltants, o mig camí aturat trepant, va provocar la deposició d'escòries de fang, es trepant ambadvantages, facing the Yangtze River Delta, Pearl River Delta, Shandong peninsula, Beijing-Tianjin-Tangshan area, targeted investment promotion several times. Industry-led unit and various town streets are developing detailed promotion plans, the basis of what is specific to each industry, has formed a kind of scale, need to bring in the kind of projects each town street has the kind of resources, what location, focus on the development of the kind of industries. Four stroke technology and science. Determinants of technology is the County's economic development through scientific and technological innovation, improve product value-added and improve economic competitiveness, is the inevitable way to achieve leapfrog development. Talent is the city center city's first resource, is the primary industry development, and revitalization of the social protection. So, in terms of skills: to catch ... Competitive. Encouraging enterprises to actively undertake science and technology projects, strengthening research cooperation, using advanced technology to increase the added value of their products to ensure that introduction of transforming scientific and technological achievements during the year ... ... New research enterprises ... ... Home, creating innovative platforms ... ... Generic classifier. In: first, we must strengthen the cultivation of talent, efforts to increase vocational education and training and meet the basic demand of enterprise development. Then introduced a number of the county needed scarce education, health professionals, meet social development needs to invest more in machinery, pharmaceutical manufacturing research and development in higher education, such as the introduction of talent to meet the need. Third, we must rely on ... ... Post-doctoral workstation, ... ... Food research station platform, to the XX University to find experts 对于i915/925主板，常见有两种供电搭配:一是24针主电源+ATX 12V，这样可以提供144W的电能供主板使用。二是20针主电源+ATX 12V+预备电源，主电源和预备电源每个提供72W，总共也是144W。 按照英特尔的规格，它为每个插卡提供2A的+5V电流，如果使用6条扩展槽+PCI Express x16的全负载形式，它们不能超过14A，否则再强的电源亦无法提供足够的电量，过高的电流可能会导致主板的烧毁 D型接口，四根线，中间两根黑线是地线，红线是5V，黄线是12V; CPU风扇黑线接地，红线接12V，另外一根线是测速线，可以不接。就是说，这个风扇完全可以接在D型电源接口上，测速线空着不接就行 ment en la taula de l'aigua sota condicions de perforació ajustar el nivell de densitat i elevació canal secció és massa llarg o massa gran de la unitat de càrrega de terra... Construcció de paret contínua de taula 1 apèndix del problema i el processament preguntes raons processament mètode enganxar trepant (en el trepant sòl de sexe a la ranura, argila adjunta en bous trepant fulla fenomen de trepant Shang suspensió produïda) en argila tova plàstic capa perforació, imatges tenia ràpid, escòria més, de melmelada de pasta boca; en sòl viscós en forat de perforació, trepant velocitat tenia amb lent, no es tall xip sòl darrere Shi trepant Shi nota control perforació velocitat, la pasta es va produir fenomen de trepant, pot proposar forat ranura clar bits Shang de perforació de targeta de escòria de fang (plataforma en procés de ranura en la era carden ranura dins, a superior i inferior o esmentar no fins) Fang escòria precipitació en plataforma als voltants, o mig camí aturat trepant, va provocar la deposició d'escòries de fang, es trepant ambadvantages, facing the Yangtze River Delta, Pearl River Delta, Shandong peninsula, Beijing-Tianjin-Tangshan area, targeted investment promotion several times. Industry-led unit and various town streets are developing detailed promotion plans, the basis of what is specific to each industry, has formed a kind of scale, need to bring in the kind of projects each town street has the kind of resources, what location, focus on the development of the kind of industries. Four stroke technology and science. Determinants of technology is the County's economic development through scientific and technological innovation, improve product value-added and improve economic competitiveness, is the inevitable way to achieve leapfrog development. Talent is the city center city's first resource, is the primary industry development, and revitalization of the social protection. So, in terms of skills: to catch ... Competitive. Encouraging enterprises to actively undertake science and technology projects, strengthening research cooperation, using advanced technology to increase the added value of their products to ensure that introduction of transforming scientific and technological achievements during the year ... ... New research enterprises ... ... Home, creating innovative platforms ... ... Generic classifier. In: first, we must strengthen the cultivation of talent, efforts to increase vocational education and training and meet the basic demand of enterprise development. Then introduced a number of the county needed scarce education, health professionals, meet social development needs to invest more in machinery, pharmaceutical manufacturing research and development in higher education, such as the introduction of talent to meet the need. Third, we must rely on ... ... Post-doctoral workstation, ... ... Food research station platform, to the XX University to find experts