On Saturday 22 April 2006 14:29, G TT wrote:
> 1. Motherboard cu?a ba’c (ga-8i915pl-g(rev1.x)) co’ CPU_FAN
> (Cooler Fan Power Connector): 4 pins (trang 20):
> "http://www.gigabyte.com.tw/Support/Motherboard/Manual_DownloadFile.aspx?Fi
>leType=Manual&FileID=16373"
> "http://asia.giga-byte.com/FileList/Manual/motherboard_manual_ga-8i915pl-g(
>rev1.x)_e.pdf" Pin Definition
> ---- ----------
> 1 GND
> 2 +12V
> 3 Sense
> 4 Speed control
> Co’ hai loa.i CPU fan. Ba'’c pha?i xa'c ddi.nh CPU cu?a ba'c co'
> loa.i fan na`o, theo ca'p 3 hay 4 da^y cu?a fan:
Có 4 giây : đen+vàng+green+blue
> a. Lo.ai 3 da^y (no^'i dde^'n pins 1, 2 va` 3) , CPU fan speed cu?a loa.i
> na`y ddu+o+.c ddie^`u khie^?n bo+?i ddie^.n the^' tu+` pin 2 (+5V ..+12V).
> Pin 3 du`ng dde^? ‘do`’ to^’c ddo^. CPU fan.
> b. Lo.ai 4 da^y (no^'i dde^'n pins 1, 2, 3 va` 4) , CPU fan speed cu?a
> loa.i na`y ddu+o+.c ddie^`u khie^?n bo+?i xung (Pulse Width Modulation)
> tu+` pin 4. DDie^.n the^' tu+` pin 2 la` nhu+~ng xung (pulses 0V-+12V),
> ddie^`u khie^?n tu+` pin 4. Pin 3 du`ng dde^? do` to^'c ddo^. CPU fan
> CMOS-BIOS se~ tu+. ddo^.ng nha^.n ra fan lo.ai a (3 da^y) hay loa.i b (4
> da^y) ne^'u ba’c set theo trang 43:
> CPU Smart Fan Control : Enable
> CPU Smart Fan Mode : Auto
> Ne^'u ba'c cha('c cha('n CPU fan co' 3 da^y (loa.i a) , ba'c set theo trang
> 43:
> CPU Smart Fan Control : Enable
> CPU Smart Fan Mode : Voltage (Set to Voltage”when you use a CPU fan
> with a 3-pin power cable)
> Ne^'u ba'c cha('c cha('n CPU fan co' 4 da^y (loa.i b) , ba’c set theo
> trang 43:
> CPU Smart Fan Control : Enable
> CPU Smart Fan Mode : PWM (Set to PWM”when you use a CPU fan with a
> 4-pin power cable)
Set CMOS thì không khó, chỉ khó cái vụ nối biến trở :)
Mình đang thử hình dung thế này :
Tháo béng cái FAN ra không xài. Rồi thay vào một cái FAN 220V cắm giây riêng
ra ngoài, khi bật computer thì nó cũng bật theo.
Cái FAN này mua thứ to chừng 20cm (gía 40 ngàn) làm một cái phễu, đầu nhỏ áp
vào cục lá nhôm toả nhiệt, đầu to là cái FAN. Quạt mát như mùa Xuân (đại
thắng)
>
> 2. Ngoa`i CMOS ba'c co’ the^? cha.y EasyTune 5 dde^? canh chu+`ng va`
> ddi.nh nhie^.t ddo^. cho CPU va` fan speed. Nhu+ng Easy Tune 5 chi? cha.y
> trong Windows (XEN va` wine va` vm.. dda^u ca? ro^`i ??! Tre^n Linux nha^'t
> ddi.nh co' dda^u ddo' tre^n ma.ng, cai' tri`nh nho nho? ddo.c CMOS data va`
> display tre^n KDE hay gnome)
> Easy Tune 5 cho Windows NT,Windows 2000,Windows XP,Windows XP 64bit:
> "http://www.gigabyte.com.tw/Support/Motherboard/Utility_DownloadFile.aspx?F
>ileType=Utility&FileID=50"” DDe^` nghi. ba'c cha.y Easy Tune 5 tre^n
> Windows XP ro^`i ta.o la.i (reproduce) nhu~ng hie^.n tu+o+.ng ma` ba'c
> ga(.p tre^n Linux trong khi ghi che'p CPU-Temp va` CPU Fan speed, qua Easy
> Tune 5 va`o lu’c CPU fan cha.y e^m (CPU-Temp lu'c a^'y bao nhie^u?)
> va` lu'c CPU fan cha.y o^`n (CPU-Temp lu'c a^'y bao nhie^u?).
>
> 3. Ne^'u du`ng Easy Tune 5, ba'c xa'c ddi.nh ra(`ng CPU fan cha.y he^'t
> to^'c lu+.c va` ra^'t o^`n khi CPU-Temp co`n tha^'p (du+o+'i 65 ddo^. C)
> thi` ba'c co' the^? ca(‘t da^y dde^'n pin 2 va` no^'i che^m va`o cho^?
> ca('t mo^.t bie^'n tro+? (potentiometer) vo+'i tri. theo co^ng thu+'c sau,
> ne^'u ba’c muo^'n thay ddo^?i ddie^.n the^' cu?a pin 2, qua bie^'n
> tro+?, tu+` +7V (CPU fan cha.y e^m) dde^'n +12V (CPU fan cha.y o^`n) va`
> cu+o+`ng ddo^. ddie^.n cua? fan la` 200 mili Ampere:
> (Delta U)/I = R = (12V - 7V)/200mA = 25 Ohm.
> Ne^'u ba’c cha.y quanh na(`m vo+’i mo^.t tri. co^' ddinh. cu?a
> bie^'n tro+? la` 12 Ohm, ma` vo+'i tri. ddo' Easy Tune 5 kho^ng bao gio+`
> bie^?u thi. qua' 65 ddo^. C no+i CPU, thi` ba'c qua(ng qua'ch ca'i bie^'n
> tro+? 25 Ohm va` thay va`o dda^'y ca'i ddie^.n tro+? 12 Ohm/0.5W (P = U*I =
> R*I*I = 12 Ohm*0.2A*0.2A = 0.48 W) (PSPICE va` Tcl-SPICE va` Scilab.. dda^u
> ca? ro^`i ??!)
>
> To'm la.i, nghe^`“cho+i”cu~ng la('m co^ng phu! ngay cho nhu+~ng
> ngu+o+`i ma` ngo^n ngu+~ ta.o tri`nh duy nha^'t ma` ho. tho^ng tha.o la`
> ca’i .. mo? ha`n
> Va` mo^.t la^`n nu+~a , kho^ng ai mang tra'ch nhie^.m gi` ne^’u
> nhu+~ng su+. co^' co'’ the^? xa^?y ra, tru+` ba'’c, ne^’'u
> ba'c theo lo+`i khuye^n tre^n!
Sao chữ gõ có khi ra ’ ????
--
m k h _ s g n
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