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    • 108. 发明授权
    • Dual-purpose computer having gravity-actuated fan speed control
    • 具有重力驱动风扇转速控制的双用途计算机
    • US06809925B2
    • 2004-10-26
    • US10356080
    • 2003-01-31
    • Christian L. BeladyChristopher G. Malone
    • Christian L. BeladyChristopher G. Malone
    • H05K720
    • H05K7/20727G06F1/20G06F2200/1638H05K7/1487
    • A dual-purpose computer according to the invention has a gravity-actuated switch mounted therein or thereon. The gravity-actuated switch is used to control the speed of a cooling fan for the computer. When the computer is operated in a horizontal orientation such as a typical rack-mounted server would be, the gravity actuated switch assumes a first state. When the computer is operated in a vertical orientation such as a typical desk side workstation would be, the gravity actuated switch assumes a second state. When the switch is in the first state, fan speed controller circuitry runs the fan at a first speed. When the switch is in the second state, fan speed controller circuitry runs the fan at a second speed. In one embodiment, the first speed is a higher speed intended to optimize reliability, and the second speed is a lower speed intended to minimize noise.
    • 根据本发明的两用计算机具有安装在其中或其上的重力驱动开关。 重力驱动开关用于控制计算机的冷却风扇的速度。 当计算机在诸如典型的机架式服务器的水平方向上操作时,重力驱动开关将处于第一状态。 当计算机在诸如典型的桌面工作站的垂直方向上操作时,重力驱动的开关处于第二状态。 当开关处于第一状态时,风扇转速控制器电路以第一速度运行风扇。 当开关处于第二状态时,风扇转速控制器电路以第二速度运行风扇。 在一个实施例中,第一速度是旨在优化可靠性的较高速度,并且第二速度是旨在最小化噪声的较低速度。