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    Computer fan speed control system
    12.
    发明授权
    Computer fan speed control system 失效
    电脑风扇转速控制系统

    公开(公告)号：US06247898B1

    公开(公告)日：2001-06-19

    申请号：US08940301

    申请日：1997-10-01

    申请人： Michael G. Henderson ,  Ken Nguyen ,  Karl S. Johnson

    发明人： Michael G. Henderson ,  Ken Nguyen ,  Karl S. Johnson

    IPC分类号： F04B4106

    CPC分类号： G06F11/3093 ,  F04D25/166 ,  F04D27/004 ,  G06F1/20 ,  G06F1/206 ,  G06F1/26 ,  G06F3/0601 ,  G06F9/4411 ,  G06F11/0748 ,  G06F11/0772 ,  G06F11/0793 ,  G06F11/3058 ,  G06F11/3072 ,  G06F11/328 ,  G06F11/3466 ,  G06F13/4027 ,  G06F21/305 ,  G06F2003/0692 ,  G06F2201/86 ,  H04L12/12 ,  H05K7/20209 ,  Y02D50/40

    摘要： A cooling system for cooling components of a computer is provided. The cooling system includes a DC fan which operates at a speed which is substantially proportional to the voltage that is applied to the fan. A zener diode voltage divider is connected in series between a voltage source and a first input of the fan. The second input of the fan is connected to a reference voltage source. A switch is also connected in series between the voltage source and the first voltage input of the fan so as to be connected in parallel with the zener diode voltage divider. When the switch is in a first position, the voltage produced by the voltage source is applied directly to the fan allowing the fan to operate at a first speed. When the switch is in a second position, the voltage from the voltage source is applied to the first input of the fan through the zener diode such that the first input of the fan receives a second voltage that is less than the first voltage thereby causing the fan to operate at a second speed. The zener diode voltage divider is substantially current independent such that the voltage drop across the zener diode is substantially independent of the current that is drawn by the fan.

    摘要翻译： 提供了一种用于冷却计算机组件的冷却系统。 冷却系统包括直流风扇，其以与施加到风扇的电压基本成比例的速度运行。 齐纳二极管分压器串联连接在电压源和风扇的第一输入端之间。 风扇的第二个输入端连接到参考电压源。 开关也串联连接在电压源和风扇的第一个电压输入端之间，以便与齐纳二极管分压器并联连接。 当开关处于第一位置时，由电压源产生的电压直接施加到风扇，允许风扇以第一速度运行。 当开关处于第二位置时，来自电压源的电压通过齐纳二极管施加到风扇的第一输入端，使得风扇的第一输入端接收小于第一电压的第二电压，由此导致 风扇以第二速度运行。 齐纳二极管分压器基本上是电流独立的，使得齐纳二极管两端的电压降基本上与风扇吸收的电流无关。

    Computer fan speed control system method
    15.
    发明授权
    Computer fan speed control system method 失效
    电脑风扇转速控制系统方法

    公开(公告)号：US06526333B1

    公开(公告)日：2003-02-25

    申请号：US08941267

    申请日：1997-10-01

    申请人： Michael G. Henderson ,  Ken Nguyen ,  Karl S. Johnson

    发明人： Michael G. Henderson ,  Ken Nguyen ,  Karl S. Johnson

    IPC分类号： G05D2300

    CPC分类号： G06F11/0748 ,  F04D25/166 ,  F04D27/004 ,  G06F1/20 ,  G06F1/206 ,  G06F1/26 ,  G06F3/0601 ,  G06F9/4411 ,  G06F11/0772 ,  G06F11/0793 ,  G06F13/4027 ,  G06F21/305 ,  G06F21/31 ,  G06F2003/0692 ,  G06F2201/86 ,  H04L41/12 ,  H04L41/22 ,  H04L49/90 ,  H05K7/20209 ,  H05K7/20727 ,  Y02D10/14 ,  Y02D10/151 ,  Y02D10/16

    摘要： A cooling system for cooling components of a computer is provided. The cooling system includes a DC fan which operates at a speed which is substantially proportional to the voltage that is applied to the fan. A zener diode voltage divider is connected in series between a voltage source and a first input of the fan. The second input of the fan is connected to a reference voltage source. A switch is also connected in series between the voltage source and the first voltage input of the fan so as to be connected in parallel with the zener diode voltage divider. When the switch is in a first position, the voltage produced by the voltage source is applied directly to the fan allowing the fan to operate at a first speed. When the switch is in a second position, the voltage from the voltage source is applied to the first input of the fan through the zener diode such that the first input of the fan receives a second voltage that is less than the first voltage thereby causing the fan to operate at a second speed. The zener diode voltage divider is substantially current independent such that the voltage drop across the zener diode is substantially independent of the current that is drawn by the fan.

    摘要翻译： 提供了一种用于冷却计算机组件的冷却系统。 冷却系统包括直流风扇，其以与施加到风扇的电压基本成比例的速度运行。 齐纳二极管分压器串联连接在电压源和风扇的第一输入端之间。 风扇的第二个输入端连接到参考电压源。 开关也串联连接在电压源和风扇的第一个电压输入端之间，以便与齐纳二极管分压器并联连接。 当开关处于第一位置时，由电压源产生的电压直接施加到风扇，允许风扇以第一速度运行。 当开关处于第二位置时，来自电压源的电压通过齐纳二极管施加到风扇的第一输入端，使得风扇的第一输入端接收小于第一电压的第二电压，由此导致 风扇以第二速度运行。 齐纳二极管分压器基本上是电流独立的，使得齐纳二极管两端的电压降基本上与风扇吸收的电流无关。