A7 B7 經濟部中央標準局員工消費合作社印製\ 五、發明説明（ 本發明係一種關於電腦主機板散熱風扇延遲關 閉裝置’主要是—種於電腦中央處理單元關閉後風 扇仍持續運轉一段時間，待有效排除關機前產生之 熱量、降低中央處理單元及系統溫度後，再漸序停 止風扇運轉之設計。 按現今電腦上的散熱風扇有三種：中央處理單元 風扇 '電源供應器風扇及機殼風扇，其分別負責中 央處理單元、電源供應器及機殼内部散熱問題，而 其運作則是跟隨電腦中央處理單元之開啟、關閉， 同步開始及停止運轉，亦即如第一圖所示，電腦開 機時’系統由南橋晶片（S〇uth Bridge)發出高電位 之風扇開關控制訊號（1 〇丨），經風扇電源開關控 制電路後開啟風扇電源輸出。當要關閉中央處理單 疋時’系統則由南橋晶片發出低電位之風扇關閉控 制訊號（1 0 1 )’經由風扇電源開關控制電路切斷 風扇電源’以停止風扇運轉。然此種控制風扇運轉 的方式有著如下的缺點： 電腦關閉中央處理單元同時亦關閉風扇，導致關 機前中央處理單元、電源供應器及各零主件所產生 的熱量無法立即散逸，造成系統處於高溫狀態甚或 溢度持續上升’而影響中央處理單元及各零主件之 壽命，其中尤以影響中央處理單元為甚。 對風扇本身而言，由正常運轉之高電壓（+12V) 瞬間切斷電源至〇伏，電流消耗從約1 〇〇mA驟降為 零’此種電壓電流的急劇變化，容易造成風扇馬達 的損耗’減少風扇的使用壽命。 ---Ί--：----:1 装------訂--------線 - / (請先閲讀背面之注意事項再填寫本貰)A7 B7 Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs \ 5. Description of the invention (The present invention is a delayed shutdown device for computer motherboard cooling fans, 'mainly — the fan continues to run for a period of time after the computer's central processing unit is turned off, After the heat generated before the shutdown is effectively eliminated, the central processing unit and the system temperature are reduced, and then the fan operation is gradually stopped. According to the current cooling fans on the computer, there are three types: central processing unit fans' power supply fans and chassis fans. , Which is responsible for the internal heat dissipation of the central processing unit, power supply, and chassis, and its operation is to follow the computer's central processing unit on and off, start and stop synchronization, that is, as shown in the first picture, the computer is turned on When the system is issued a high-potential fan switch control signal (100) from the South Bridge chip, the fan power output is turned on after the fan power switch control circuit. When the central processing unit is to be turned off, the system is provided by The south bridge chip sends a low-potential fan shutdown control signal (1 0 1) ' The fan power switch control circuit cuts off the fan's power to stop the fan. However, this method of controlling the fan operation has the following disadvantages: The computer turns off the central processing unit and also turns off the fan, which causes the central processing unit, power supply and each The heat generated by the zero main parts cannot be dissipated immediately, which causes the system to be in a high temperature state or even continue to rise, which affects the life of the central processing unit and the zero main parts, especially the central processing unit. For the fans themselves From the high voltage (+ 12V) of normal operation, the power is instantly cut to 0 volts, and the current consumption plummets from about 1000 mA to zero. 'This sharp change in voltage and current can easily cause the loss of the fan motor.' Service life. --- Ί--: ----: 1 Pack -------- Order -------- Line- / (Please read the precautions on the back before filling in this 贳)
、發明説明（厶） 赛於則述現行控制電腦風 各項缺點，本發明人欲提供_種1關方法所衍生之 風扇持續運轉一段時了於電腦關機後讓 的熱量之設計。 u，利排出關機前所產生 亦即，本發明之主要目的 後延遲散熱風扇關閉的控制裝置’、一種於電腦關機 後處於高溫或持續升溫狀態，、以油，免系統於關機 及各零主件之耗損，增長系統之壽二中央處理單元 本發明之另一目的在提供— 電源方法’使風扇的運轉以漸近方進式之關閉風扇 頁 避免現行驟然切斷電源對風;:二此可 以增長風扇之壽命。 斤k成之磨損， 為進-步說明本發明之架構、特徵及其他目的， β附以圖式詳細說明如后： 訂 圖式部份： 第 第 第 圖 圖 圖 經濟部中央標準局員工消費合作社印裝 係現行之電腦風扇開關控制圖。 係本發明之電路方塊圖。 係本發明之第一實施例電路詳圓 係本發明之第二實施例電路詳圖 圖號部份： (101)風扇開關控制訊號 (1 〇 2)風扇電源輸出 (201 )瞬間啟動及延遲關閉控制訊號 (301)電晶體Q2射極電壓 (3 0 2 )電晶體Q1閘極電壓 第四圖 本紙張尺度適用中國國家標準（CNS ) Α4規格（210Χ297公釐）2. Description of the invention (厶) Saiyu describes the disadvantages of the current control of the computer wind. The inventor intends to provide a design derived from the 1-level method. The fan is continuously operated for a period of time, and the heat is designed after the computer is turned off. u, a control device that is generated before the exhaustion is turned off, that is, the main purpose of the present invention is to delay the turning off of the cooling fan after the main purpose of the present invention; Consumption of parts, increase the life of the system. Two central processing units. Another object of the present invention is to provide a power supply method 'to make the fan's operation close to the fan page in an asymptotic way to avoid the current sudden power cut to the wind; Increase fan life. In order to further explain the structure, characteristics and other purposes of the present invention, β is attached with a detailed description as follows: Schematic part: The first figure is shown in the figure. Cooperative printing is the current computer fan switch control chart. It is a circuit block diagram of the present invention. The detailed circuit of the first embodiment of the present invention is the detailed diagram of the second embodiment of the present invention. (101) Fan switch control signal (102) Fan power output (201) Instant start and delayed shutdown Control signal (301) Transistor Q2 Emitter voltage (3 0 2) Transistor Q1 Gate voltage The fourth picture This paper size applies to China National Standard (CNS) A4 specification (210 × 297 mm)
經濟部中央標準局員工消費合作社印裂 A7 B7 五、發明説明（Λ) ' 一'—— (401 )臨界低溫通知訊號 由第二圖可去口，本發明與習知***第一圖之 處在於： 本發明將南橋晶片送出之風扇開關控制訊號 〇〇"經由控制電路（Β3)後再送入風扇電源切 換及開關電路（Β4) ’其目的在於開機時，高電位 之風扇開關控制訊號（1〇1 )經瞬間導通產生啟動 訊號（201 )送入風扇電源切換及開關電路Β4，打 開風扇電源輸出102 ’使風扇立即啟動運轉。而於 關機時，則南橋晶片發出之低電位風扇開關控制訊 號.（101 )經過控制電路33後，使關閉訊號（2〇1 ) 延遲奴時間產生再送入風扇電源切換及開關電路 (Β4 )，以切斷風扇電源，使風扇停止運轉。The Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs printed A7 B7. V. Description of the invention (Λ) '一' —— (401) The critical low temperature notification signal can be read from the second picture. The first picture of the present invention and the conventional system The invention is: The present invention sends the fan switch control signal sent from the South Bridge chip through the control circuit (B3) and then into the fan power switching and switching circuit (B4) 'The purpose is to turn on the high-potential fan switch control signal ( 101) The start signal (201) generated by the instantaneous conduction is sent to the fan power switching and switching circuit B4, and the fan power output 102 is turned on to immediately start the fan. At the time of shutdown, the low-potential fan switch control signal sent by the Southbridge chip. (101) After the control circuit 33, the shutdown signal (201) is generated to delay the slave time and then sent to the fan power switch and switch circuit (B4). In order to cut off the fan, stop the fan.
風扇電源切換與開關控制電路（Β4)與第一圖 風扇電源開關控制電路（Β2 )主要差異在於前者多 了風扇電源切換部份。此部份的用途在於因現存電 源供應器於暫時中斷（Suspend)及軟體關機（Soft 〇f f)時，都是立即切斷電源（包括+5V、_5V、+12V 及—12V)，僅餘+5V 預備電源（Standby Power--+ 5 VSB )仍正常供應，然現有風扇均仰賴+丨2V供電， 因此即使前述第一項風扇關閉控制訊號（20 1 )於 關機時經延遲一段時間始送達風扇電源開關控制電 路（B4) ’但因供應風扇電源之+ 〗2V早已隨電源供 應器關閉而消失’所以風扇依舊是隨著關機而立即 停止運轉，故必須在電腦關機電源供應器停止供應 (請先閲讀背面之注意事項再填寫本頁} •製. -訂-The main difference between the fan power switch and switch control circuit (B4) and the first figure is the fan power switch control circuit (B2). The former has a fan power switch part. The purpose of this part is because the existing power supply is cut off immediately (Suspend) and the software is shut down (Soft ff), the power is immediately cut off (including + 5V, _5V, + 12V and -12V), leaving only + The 5V standby power (+ 5 VSB) is still supplied normally, but the existing fans rely on + 丨 2V power supply. Therefore, even if the first fan shutdown control signal (20 1) mentioned above is delivered to the fan after a delay after shutdown Power switch control circuit (B4) 'But because the + of the fan power supply + 2V has disappeared as the power supply has been turned off', so the fan still stops immediately after shutting down, so the power supply must be stopped when the computer is turned off (please Read the notes on the back before filling out this page} • 制.-ORDER-
A7 B7 經濟部中央標準局員工消費合作社印製 五、發明説明（ + 12V的同時提供另一電源^予風扇，此時唯一可用電 源即是+ 5 V S B。因此，風扇電源切換電路部份即是在 處理電腦經暫時中斷（Suspend)或軟體關機（s〇ft 0 f f)的操作下關機時’立即切換+ 5VSB電源予風扇， 使風扇不致因+1 2 V消失而斷電，如此即可使風扇於 關機後仍持續運轉一段時間，以有效排除關機前所 產生之熱量。 關於本發明之實施例’請參閱第三圖、第四圖之 實施例電路詳圖’在第三圖中，風扇電源切換電路 B4是由兩個二極體（D2，D3 )來達成，亦即風扇 電源切換電路包含一電源電路，其因應一控制信 號’選擇性地輸出該預備電源（+ 5 V s b)及預定電源 (+1 2V);第一個二極體D2 ’供輸入該預備電源，此 第一個二極體具一第一輸出端；第二個二極體D3， 供輸入該預定電源，此第二個二極體具一第二輸出 端；一電晶體Q2 ’其具一射極與第一輸出端、第二 輸出端連結’此電晶體Q2具一集極輸出該風扇電源 102。 在正常開機時，電源供應器+丨2 v正常供應，故電 晶體Q2的射極電壓301約為11. 7V，當電腦以暫時 中斷（Suspend)或軟體關機（Soft Of f)方式關機時， + 1 2V消失’ +5VSB存在，所以此時電晶體Q2的射極 約為4· 7V，亦即經由此電路，不論電腦是正常開機 狀態或是暫時中斷（Suspend)、軟體關機（Soft Of Ο 狀態’電晶體的射極皆有電源供應。 ------------装------訂---！---„--為 - /: (請先閲讀背面之注意事項再填寫本貰)A7 B7 Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs. 5. Inventory (+ 12V while providing another power supply to the fan. At this time, the only power supply available is + 5 VSB. Therefore, the fan power switching circuit is When the computer is shut down after a temporary interruption (Suspend) or software shutdown (s0ft 0 ff), 'switch immediately + 5VSB power to the fan, so that the fan will not be powered off due to the disappearance of + 12 V, so that The fan continues to run for a period of time after the shutdown to effectively eliminate the heat generated before the shutdown. For the embodiment of the present invention, 'please refer to the detailed circuit diagram of the embodiment of Figure 3 and Figure 4' In the third figure, the fan The power switching circuit B4 is achieved by two diodes (D2, D3), that is, the fan power switching circuit includes a power circuit, which selectively outputs the standby power (+ 5 V sb) in response to a control signal and A predetermined power source (+1 2V); a first diode D2 ′ is used to input the preliminary power source, and the first diode D1 has a first output terminal; and a second diode D3 is used to input the predetermined power source, This second diode With a second output terminal; a transistor Q2 'which has an emitter connected to the first output terminal and the second output terminal' This transistor Q2 has a collector output the fan power source 102. During normal startup, the power supply + 丨 2 v normal supply, so the emitter voltage 301 of transistor Q2 is about 11. 7V, when the computer is shut down temporarily (Suspend) or software shutdown (Soft Of f), + 1 2V disappears + 5VSB Existence, so the emitter of transistor Q2 is about 4 · 7V at this time, that is, through this circuit, whether the computer is normally turned on or temporarily interrupted (Suspend), or software is turned off (Soft Of Ο state). All have power supply. ------------ Installation ------ Order ---! ------------ (Please read the precautions on the back before filling in this borrow)
五、發明説明（厂） A7 B7 經濟部中央標準局貝工消費合作社印製 控制電路B3包含·一 „ ^ ^ ^ .電日日體Q1，其具一閘極及 一汲極’此汲極輪出t始 询出切換控制信號2〇1 其具一陽極及一陰極，陽極 ® 秀極輸入風扇控制信號1 〇 1， 陰極與電晶體Q1之關搞4灿 之閘極連結；一電阻-電容電路，其 具一第一端輸八風扇控制信號101，此電阻-電容電 路具有-第二端與前述陰極、閘極連結。 當開機時’南橋晶Η择山 僻日日片送出之風扇開關控制訊號 (101 )為高電位’透過瞬間導通電路（二極體)， 電晶體Q1的閉極（3〇2 )亦為高電位故Q1導通， 其汲極為低電位，戶斤以電晶體Q2導通，風扇電源輸 出（102 )約為11. 7V，風扇立即啟動運轉。 當電腦進入中斷運作（p〇S__p〇wer 〇n Suspend ) 時，電源供應器仍正常供電，唯中央處理單元已停 止工作，故南橋晶片送出低電位之風扇開關控制訊 號（101 ) ’此時電容器C1透過電阻R1放電，電晶 體Q1的閘極電壓（302 )以衰減方式降低，但QJ 仍保持在ON的狀態，所以電晶體q2亦維持在〇N的 狀態’故風扇電源輸出（丨〇2 )仍在1丨.7v，風扇 持續運轉中。等電容C1放電至電晶體Q1的閘極電 壓小於其載止電壓時，Q1關閉，Q2亦隨之關閉， 此時風扇電源輸出（1〇2)為零，風扇方才停止運 轉。 由上可知本發明確實可於電腦關機時，延遲風扇 關機時間’使其持績運轉一段時間，待關機前產生 之熱量排除後再停止工作，其延遲時間可透過調整 電阻R1、電容C1的值來達成。同時，因為我們是 丨請 先 閲 讀 背 之 注 意 事 項 再： 奮 裝 訂 泉 本紙張尺度適财國國家標準（CNS ) ( 2iQx297公釐） A7 B7 經濟部中央標準局員工消費合作社印製 五、發明説明（t) 以衰減方式將Q1的閘極電壓慢慢由高電位降至零， 對Q2的基極亦復如此’所以流過Q2的電流是慢慢 減少’而非從高載驟降至零，故對風扇而言，其上 之電壓電流是逐漸變化’而非現今電腦之從正常運 轉瞬間切斷其電源’可確實達到本發明之另一目 的’減少風扇馬達耗損，增長風扇壽命的功能。 當電腦以暫時中斷（Suspend)或軟體關機（s〇ft Off)方式關機時，風扇延遲關閉的控制和前述中斷 運作（Power On Suspend)時是一樣的，差別在於此 時電源供應器的+1 2 V已消失，故經由風扇電源切換 電路提供+ 5VSB予風扇，使風扇持續運轉，達到延遲 關閉的功能。 至於第四圖則是更進一步屬智慧型的風扇延遲 關閉裝置’其特點在於非以電阻電容（RC )電路做延 遲控制’而是以溫度偵測裝置（譬如習知的LM75 ) 實際量測中央處理單元的溫度，並設定一臨界值。 風扇電源切換電路B4包含一電源電路，其因應 —控制信號’選擇性地輸出預備電源（ + 5Vsb)及預定 電源（ + 12V);—電壓轉換器，供將預備電源轉換成一 預定電壓值（ + 12Vsb)輸出；第一個二極體D2，供輸 入該預定電壓值，此第一個二極體D2具一第一輸出 端；第二個二極體D3，供輸入該預定電源，此第二 個二極體具一第二輸出端；一電晶體Q2，其具一射 極與第一輸出端、第二輸出端連結，此電晶體Q2具 一集極輸出該風扇電源丨〇2。 i張尺度適用中 J ； I,丨裝------訂-------Γ —旅 ν.ί' (請先閲讀背面之注意事項再填寫本頁} 五、發明説明（ 經 濟 部 t 標 局 員 工 消 費 合 作 社 印 製 控制電路B3包含：_溫度镇測裝置，其 央處理早7L溫度之指示信號，而輸出致能之— 信號4〇1;-電晶體Q1，其具_閘極及一及口 極輸出切換控制信號2〇1;二極體D1，其具—陽極^ 一陰極，陽極輸入風扇控制信號1〇1，陰極與雷^ 體Q1之問極連結；一〇R邏輯M G1，其具_第二曰曰 端輸入該風扇控制信號101，此0R邏輯閉具有 一輸入端輸入該溫度偵測裝置輸出之通知信號 401此OR邏輯閘具有一輸出端與前述陰極 連結。 ^ 當電腦關機後’待中央處理單元溫度降至臨界 以下時’由溫度偵測裝置發出一低位準之低溫通 訊號（40"，此訊號與南橋晶片所發之風扇開 控制訊號（101 )經過0R邏輯閘G1來控制風扇電 1〇2 ’因此可確保中央處理單元溫度降至設定臨 後風扇始關閉，達到更精確的保護。 此外’在風扇電源切換電路方面，對+ 5vsb 級處理’意即如圖示先將其經由電壓轉換器提I + 12VSB再與+12v作電壓切換，如此可使電晶體 的^極電壓3 〇 1於電源切換過程保持在約^ 1. 7 v 位準使風扇於延遲時間.的轉速不致下降，能 速的達到散熱的功能。 以則述對本發明之原理、架構及佐以實施例 關°兒明可知，本發明為提供一種於電腦關機後 散熱風扇關閉的控制裝置，使其持續運轉—段時間 後再漸序停止，而本發明提供的優點計有： 汲 及 入第 極 裝 值 知 關 頁 界值 訂 作 m 尚為 Q2 的 更快 之相 延遲 $張尺度適用中 A7 B7 五、發明説明（g) 可迅速排除關機前所產生的熱量，迅速降低中央 處理單元的溫度，避免中央處理單元及系統於關機 後還處於高溫甚或持續升溫狀態，以減少中央處理 單元及各零主件之耗損，增長系統之壽命。 以漸序方式關閉風扇電源，使風扇以漸減方式停 止運轉，避免現行驟然切斷電源對風扇馬達所造成 的磨損，可增長風扇之壽命。 ----------"丨裝------訂---^---^丨.,1 (請先閲讀背面之注意事項再填寫本頁) 經濟部中央標準局員工消費合作社印製 8 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐）V. Description of the invention (factory) A7 B7 The printed control circuit B3 printed by the Shellfish Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs includes a ^ ^ ^ ^. Electric sun and sun body Q1, which has a gate and a drain 'this drain The turn-on t starts to query the switching control signal 2101, which has an anode and a cathode. The anode® Xiuji inputs the fan control signal 1〇1. The cathode is connected to the transistor Q1 to connect 4 bright gates; a resistor- Capacitor circuit with a first terminal for eight fan control signals 101, this resistor-capacitor circuit has a second terminal connected to the aforementioned cathode and gate. When turned on, the 'South Bridge Crystal' selects the fan sent by the mountain remote Japanese film The switch control signal (101) is a high potential through the instantaneous conduction circuit (diode), and the closed pole (302) of transistor Q1 is also a high potential, so Q1 is turned on, and its drain is extremely low. Q2 is turned on, the fan power output (102) is about 11.7V, and the fan immediately starts to run. When the computer enters the interrupted operation (p〇S__p〇wer 〇n Suspend), the power supply is still normally powered, but the central processing unit has stopped Work, so the south bridge chip sends a low potential wind Fan switch control signal (101) 'At this time, capacitor C1 is discharged through resistor R1, and the gate voltage (302) of transistor Q1 decreases in an attenuating manner, but QJ remains in the ON state, so transistor q2 also remains at 0N. State ', so the fan power output (丨 〇2) is still 1.1.7v, and the fan is continuously running. When capacitor C1 is discharged until the gate voltage of transistor Q1 is less than its load voltage, Q1 is turned off, and Q2 is also followed. When the fan is turned off, the fan power output (102) is zero before the fan stops running. It can be seen from the above that the present invention can indeed delay the fan shutdown time when the computer is turned off to keep the performance running for a period of time before it is turned off. After the heat is removed and then stop working, the delay time can be achieved by adjusting the value of resistor R1 and capacitor C1. At the same time, because we are 丨 please read the precautions of the back again: CNS) (2iQx297 mm) A7 B7 Printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 5. Description of the invention (t) The gate voltage of Q1 is slowly reduced from high potential to zero in a decaying manner, The same is true for the base of Q2 'so the current flowing through Q2 is slowly decreasing' rather than suddenly dropping from high load to zero, so for fans, the voltage and current on it is gradually changing 'rather than the current computer The function of reducing the fan motor consumption and increasing the fan's life can be achieved by cutting off its power supply from the moment of normal operation. When the computer is shut down by Suspend or software off (sft off) The control of the delayed shutdown of the fan is the same as that of the previous interruption operation (Power On Suspend). The difference is that at this time the +1 2 V of the power supply has disappeared, so the + 5VSB is provided to the fan through the fan power switching circuit to make the fan continue. Run to achieve the function of delayed shutdown. As for the fourth figure, it is a further intelligent fan delay shutdown device. Its characteristic is that it does not use a resistor-capacitor (RC) circuit for delay control. Instead, it uses a temperature detection device (such as the conventional LM75) to actually measure the center. The temperature of the processing unit is set to a critical value. The fan power switching circuit B4 includes a power circuit which selectively outputs a reserve power (+ 5Vsb) and a predetermined power (+ 12V) in response to a control signal; a voltage converter for converting the reserve power to a predetermined voltage value (+ 12Vsb) output; first diode D2 for inputting the predetermined voltage value, the first diode D2 has a first output terminal; second diode D3 for inputting the predetermined power source, this first The two diodes have a second output terminal; a transistor Q2 having an emitter connected to the first output terminal and the second output terminal. The transistor Q2 has a collector outputting the fan power source 〇2. i scale is applicable to J; I, 丨 install ------ order ------- Γ — 旅 ν.ί '(Please read the precautions on the back before filling this page} 5. Description of the invention ( The printed control circuit B3 of the staff consumer cooperative of the Ministry of Economic Affairs t Standard Bureau includes: _ temperature control device, which centrally processes the indication signal of 7L early temperature, and outputs an enabling signal-signal 401;-transistor Q1, which has _ The gate and the first and the mouth output switching control signals 2101; the diode D1, which has-anode ^ a cathode, the anode input fan control signal 1101, the cathode is connected to the question of the lightning body Q1; R logic M G1, which has the second control terminal to input the fan control signal 101, the 0R logic switch has an input terminal to input the notification signal output by the temperature detection device 401, and the OR logic gate has an output terminal and the aforementioned cathode ^ When the computer is turned off 'When the temperature of the central processing unit drops below the threshold', a low-level low-temperature communication signal (40 " is sent by the temperature detection device, and this signal is related to the fan-on control signal (101 from the South Bridge chip) ) Through 0R logic gate G1 to control the fan power 102 The temperature of the central processing unit is lowered immediately before the fan is turned off to achieve more precise protection. In addition, 'in the fan power switching circuit, + 5vsb level processing' means that it is first raised by a voltage converter by I + 12VSB Then, the voltage is switched with + 12v, so that the transistor's pole voltage 3 〇1 can be maintained at about ^ 1. 7 v level during the power switching process, so that the fan does not drop in the delay time. The speed can be reached quickly. It is clear from the description of the principles, architecture, and examples of the present invention that the present invention provides a control device for turning off a cooling fan after the computer is turned off to keep it running for a period of time. Stop, and the advantages provided by the present invention are: the threshold value of the threshold value is set to m, the faster phase delay of Q2 is still Q2, and the scale of $ sheet is applicable in A7 B7 V. Description of the invention (g) may Quickly remove the heat generated before the shutdown, quickly reduce the temperature of the central processing unit, and avoid the central processing unit and the system from being at a high temperature or even continuously warming up after the shutdown to reduce the central The consumption of the unit and all the main parts increases the life of the system. Turn off the fan power in a gradual manner, so that the fan stops running in a gradual manner, avoiding the current wear and tear caused by the fan motor, which can increase the life of the fan. ---------- " 丨 Installation ------ Order --- ^ --- ^ 丨., 1 (Please read the precautions on the back before filling this page) Printed by the Bureau ’s Consumer Cooperatives 8 This paper is sized to the Chinese National Standard (CNS) A4 (210X297 mm)