System and method for adaptive digital ramp current control
    18.
    发明授权
    System and method for adaptive digital ramp current control 有权
    自适应数字斜坡电流控制的系统和方法

    公开(公告)号:US07830560B2

    公开(公告)日:2010-11-09

    申请号:US11700458

    申请日:2007-01-31

    CPC classification number: H05B33/0818 Y02B20/347

    Abstract: An adaptive digital ramp current control system comprises a digital current ramp controller configured to digitally ramp a current level supplied to at least one light emitting diode (LED) according to a predetermined ramp profile, the ramp profile comprising at least one intermediate current level step between a minimum current level and a maximum current level.

    Abstract translation: 自适应数字斜坡电流控制系统包括数字电流斜坡控制器,其被配置为根据预定的斜坡分布数字地斜坡提供给至少一个发光二极管(LED)的电流水平,所述斜坡分布包括至少一个中间电流水平步骤, 最小电流电平和最大电流电平。

    Ionization gauge
    19.
    发明申请
    Ionization gauge 有权
    电离计

    公开(公告)号:US20050184735A1

    公开(公告)日:2005-08-25

    申请号:US10799446

    申请日:2004-03-12

    CPC classification number: H01J41/04 G01L21/32

    Abstract: An ionization gauge for isolating an electron source from gas molecules includes the electron source for generating electrons, a collector electrode for collecting ions formed by the impact between the electrons and gas molecules, and an electron window which isolates the electron source from the gas molecules. The ionization gauge can have an anode which defines an anode volume and retains the electrons in a region of the anode. The ionization gauge can have a plurality of electron sources and/or collector electrodes. The collector electrode(s) can be located within the anode volume or outside the anode volume. The ionization gauge can have a mass filter for separating the ions based on mass-to-charge ratio. The ionization gauge can be a Bayard-Alpert type that measures pressure or a residual gas analyzer that determines a gas type.

    Abstract translation: 用于从气体分子中分离电子源的电离计包括用于产生电子的电子源,用于收集由电子和气体分子之间的冲击形成的离子的集电极,以及将电子源与气体分子隔离的电子窗口。 电离计可以具有限定阳极体积并将电子保持在阳极区域中的阳极。 电离计可以具有多个电子源和/或集电极。 集电极可以位于阳极体积内或阳极体积外。 电离计可以具有用于基于质荷比分离离子的质量过滤器。 电离计可以是衡量压力的Bayard-Alpert型,也可以是确定气体类型的残留气体分析仪。

    Ionization vacuum gauge circuit
    20.
    发明授权
    Ionization vacuum gauge circuit 失效
    电离真空计电路

    公开(公告)号:US4296356A

    公开(公告)日:1981-10-20

    申请号:US102480

    申请日:1979-12-11

    CPC classification number: H01J41/00 G01L21/32

    Abstract: In a circuit for an ionization vacuum gauge having a thermionic filament, a control circuit receptive of a control current for controlling the filament and a switch for applying the control current to the control circuit, a circuit is provided for indicating a filament interruption independent of the state of the switch. The circuit includes at least one resistor by-passing the switch to provide a continuous sensing current to the filament and a detector for detecting the interruption in the sensing current and for indicating such an interruption.

    Abstract translation: 在具有热离子细丝的电离真空计的电路中,接受用于控制灯丝的控制电流的控制电路和用于向控制电路施加控制电流的开关,提供电路以指示灯丝中断,独立于 状态的开关。 该电路包括至少一个电阻器旁通开关以向灯丝提供连续的感测电流,以及用于检测感测电流中断并用于指示这种中断的检测器。

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