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    • 1. 发明授权
    • Measuring device, in particular vectorial network analyzer, with separate oscillators
    • 测量装置,特别是矢量网络分析仪,具有单独的振荡器
    • US06970000B2
    • 2005-11-29
    • US10681535
    • 2003-10-07
    • Christian EversPeter KrausHermann Boss
    • Christian EversPeter KrausHermann Boss
    • G01R23/14G01R23/173G01R27/28G01R27/06
    • G01R23/14G01R27/28
    • A measuring device (e.g., a vectorial network analyzer) by means of at least two ports can be connected to a device under test and has associated excitation/receiving units (ERUs), each thereof having one port. At least one ERU has a signal generator, which can apply an excitation signal onto a device under test. Each ERU possesses two receiving apparatuses (each with a mixer in connection with an oscillator signal) to receive the excitation signal, the reflected signal from the associated port or the signal transmitted to the associated port and converts said signal into an intermediate signal. Each ERU exhibits its own oscillator separate from the signal generator, and generates the oscillator signal for the mixer of the receiving apparatus of the ERU, whereby the frequency and/or phase of the oscillator signals, can be adjusted independently of the frequency and/or phase of oscillator signals of the oscillators of other ERUs.
    • 通过至少两个端口的测量设备(例如,矢量网络分析仪)可以连接到被测设备,并且具有相关联的激励/接收单元(ERU),每个端口具有一个端口。 至少一个ERU具有信号发生器,其可以将激励信号施加到被测器件上。 每个ERU具有两个接收装置(每个具有与振荡器信号相连的混频器),以接收激励信号,来自关联端口的反射信号或发送到关联端口的信号,并将所述信号转换成中间信号。 每个ERU表现出与信号发生器分离的其自己的振荡器,并且产生用于ERU的接收装置的混频器的振荡器信号,由此可以独立于频率和/或频率调整振荡器信号的频率和/或相位。 其他ERU的振荡器的振荡器信号的相位。
    • 8. 发明授权
    • Method and device for operating a fuel cell system
    • 用于操作燃料电池系统的方法和装置
    • US5856034A
    • 1999-01-05
    • US765808
    • 1997-04-08
    • Gerhard HuppmannPeter Kraus
    • Gerhard HuppmannPeter Kraus
    • H01M8/04089H01M8/247H01M8/04
    • H01M8/04097H01M8/247
    • The invention provides a method and apparatus for controlling gas circulation in a fuel cell system in which a stack of fuel cells is surrounded by a protective housing. According to the invention, used cathode gas and burnt combustion gas from the fuel cell stack directly into the interior of a protective housing which surrounds the fuel cell stack. A blower which is arranged inside the housing causes the used cathode gas to mix with the burnt combustion gas and recirculate to the cathode input of the fuel cell stack, where it is further with fresh gas from the exterior.
    • PCT No.PCT / EP95 / 01923 Sec。 371日期1997年4月8日 102(e)日期1997年4月8日PCT提交1995年5月20日PCT公布。 公开号WO96 / 02951 日期1996年2月1日本发明提供了一种用于控制燃料电池系统中的气体循环的方法和装置,其中一堆燃料电池被保护壳体包围。 根据本发明,使用的阴极气体和来自燃料电池堆的燃烧燃烧气体直接进入围绕燃料电池堆的保护壳体的内部。 布置在壳体内的鼓风机使得所使用的阴极气体与燃烧的燃烧气体混合并再循环到燃料电池堆的阴极输入端,在那里进一步具有来自外部的新鲜气体。