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    • 2. 发明授权
    • Electrostatic precipitator
    • 静电除尘器
    • US07019244B2
    • 2006-03-28
    • US10126635
    • 2002-04-20
    • Jeffrey S. WeaverSamuel M. BabbKelly J. Pracht
    • Jeffrey S. WeaverSamuel M. BabbKelly J. Pracht
    • B03C7/00
    • H05K7/20181B03C3/08B03C3/47G06F1/20H05K7/20745Y02A50/2357
    • An electrostatic precipitator that removes zinc whiskers from cooling air provided to cool components in an electronics enclosure. The electrostatic precipitator comprises an ionizer configured to apply a charge to zinc whiskers suspended in the cooling air. The electrostatic precipitator also comprises a collector that collects charged zinc whiskers from the contaminated cooling air to generate uncontaminated cooling air for cooling the components of the electronics enclosure. The electrostatic precipitator is configured to be disposed in the cooling air flow path upstream of the components such that the cooling air travels through the electrostatic precipitator prior to impinging on the components.
    • 一种静电除尘器,其将锌晶须从冷却空气中除去,以冷却电子外壳中的组件。 静电除尘器包括:离子发生器,被配置为对悬浮在冷却空气中的锌晶须施加电荷。 静电除尘器还包括收集器,其从受污染的冷却空气中收集带电的锌晶须,以产生未受污染的冷却空气,用于冷却电子设备外壳的部件。 静电除尘器构造成在部件的上游设置在冷却空气流动路径中,使得冷却空气在撞击部件之前通过静电除尘器。
    • 4. 发明授权
    • Sensing media parameters
    • 感应介质参数
    • US06157791A
    • 2000-12-05
    • US348150
    • 1999-07-06
    • Robert E. HainesQuintin T. PhillipsJeffrey S. Weaver
    • Robert E. HainesQuintin T. PhillipsJeffrey S. Weaver
    • B41J29/48B65H7/02G03G15/00G03G21/00
    • G03G15/6502B65H7/02B65H2511/30B65H2553/232G03G2215/00632G03G2215/00725G03G2215/00763
    • An embodiment of a media quantity sensing device and a media type sensing device includes a first, a second a third, and a fourth electrode. The first electrode is positioned above a media tray and the second electrode is positioned on the media tray below the media. The third and the fourth electrodes are positioned so that the media leaving the media tray passes between them. The media quantity sensing device further includes a measuring circuit coupled to a controller. The measuring circuit includes a first dual slope integrator to generate a first square wave output signal having a frequency dependent upon the dielectric constant of the media between the first electrode and the second electrode. The measuring circuit further includes a second dual slope integrator to generate a second square wave output signal having a frequency dependent upon the dielectric constant of the media between the third electrode and the fourth electrode. The measuring circuit also includes a frequency measurement unit to measure the frequencies of the first and the second square wave output signals. The controller reads the frequencies from the first and the second square wave output signals. The controller determines the media type in the media tray based upon the frequency of the first square wave output signal. Based upon the media type information, the controller selects and accesses a lookup table to determine the quantity of the media in the media tray by comparing the frequency of the second square wave output signal to values in the lookup table.
    • 介质量感测装置和介质型感测装置的实施例包括第一,第二,第三和第四电极。 第一电极位于介质托盘的上方,第二电极定位在介质下方的介质托盘上。 定位第三和第四电极使得离开介质盘的介质在它们之间通过。 介质量感测装置还包括耦合到控制器的测量电路。 测量电路包括第一双斜率积分器,用于产生具有取决于介质在第一电极和第二电极之间的介电常数的频率的第一方波输出信号。 测量电路还包括第二双斜率积分器,用于产生具有取决于介质在第三电极和第四电极之间的介电常数的频率的第二方波输出信号。 测量电路还包括测量第一和第二方波输出信号的频率的频率测量单元。 控制器从第一和第二方波输出信号中读取频率。 控制器根据第一个方波输出信号的频率确定介质托盘中的介质类型。 基于媒体类型信息,控制器通过将第二方波输出信号的频率与查找表中的值相比较来选择并访问查找表来确定媒体托盘中媒体的数量。