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    • 1. 发明授权
    • Speed adjustment circuit for a plurality of fans
    • 用于多个风扇的速度调节电路
    • US08427085B2
    • 2013-04-23
    • US13007689
    • 2011-01-17
    • Bo DengXian-Guang Tan
    • Bo DengXian-Guang Tan
    • H02P1/00
    • F04D27/004F04D25/166
    • A speed adjustment circuit for a plurality of fans includes a voltage input terminal, a plurality of speed control modules, and a fan tachometer. Each of the speed control modules includes a fan connector, a speed adjusting unit, and a detector switch unit. The speed adjusting unit includes a switching control unit, a voltage adjusting chip, and a variable resistor. The detector switch unit includes a first switch. The voltage input terminal connects to the input terminal of the voltage adjusting chip through the switching control unit. The output terminal of the voltage adjusting chip connects to the power pin of the fan connector. The adjusting terminal of the voltage adjusting chip connects to ground through the variable resistor, and connects to the output terminal of the voltage adjusting chip through a resistor. The detection pin of the fan connector connects to the fan tachometer through the first switch.
    • 用于多个风扇的速度调节电路包括电压输入端子,多个速度控制模块和风扇转速计。 每个速度控制模块包括风扇连接器,速度调节单元和检测器开关单元。 速度调节单元包括开关控制单元,电压调节芯片和可变电阻器。 检测器开关单元包括第一开关。 电压输入端子通过开关控制单元连接到电压调节芯片的输入端子。 电压调节芯片的输出端子连接到风扇连接器的电源引脚。 电压调节芯片的调整端子通过可变电阻连接到地,并通过电阻连接到电压调节芯片的输出端子。 风扇连接器的检测针通过第一个开关连接到风扇转速计。
    • 2. 发明授权
    • Air pressure drop detecting device for cooling fan
    • 用于冷却风扇的空气压降检测装置
    • US08720282B2
    • 2014-05-13
    • US13410429
    • 2012-03-02
    • Xian-Guang Tan
    • Xian-Guang Tan
    • G01F1/34G01L7/00G01P15/00G01F1/00G01F13/00G01P5/00
    • G01F1/34Y10T29/49826
    • An air pressure drop detecting device for detecting air flow volume of a cooling fan includes a first pressure sensor, a second pressure sensor, and a display unit. The cooling fan has an air inlet and an air outlet opposite to the air inlet. The first pressure sensor is positioned in the air inlet and detects a plurality of first pressure values. The second pressure sensor is positioned in the air outlet and detects a plurality of second pressure values. The display unit is connected to the first pressure sensor and the second pressure sensor to display the first pressure values and the second pressure values, and a position of the cooling fan in the computer case is determined by the pressure difference between the first pressure values and the second pressure values.
    • 一种用于检测冷却风扇的空气流量的气压检测装置,包括第一压力传感器,第二压力传感器和显示单元。 冷却风扇具有空气入口和与进气口相对的空气出口。 第一压力传感器位于空气入口中并且检测多个第一压力值。 第二压力传感器位于空气出口中并检测多个第二压力值。 显示单元连接到第一压力传感器和第二压力传感器以显示第一压力值和第二压力值,并且计算机壳体中的冷却风扇的位置由第一压力值和第二压力值之间的压力差确定, 第二个压力值。