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11. 发明授权

US07701219B2 Capacitor switches for NMR 失效
标题翻译：用于NMR的电容开关
公开(公告)号：US07701219B2
公开(公告)日：2010-04-20
申请号：US10592723
申请日：2004-09-03
申请人： James Finnigan , Joseph Murphy
发明人： James Finnigan , Joseph Murphy
IPC分类号： G01V3/00
CPC分类号： G01R33/3628 , G01R33/3635
摘要： NMR (Nuclear Magnetic Resonance) capacitor switches allow for adjusting the resonant frequency ranges of NMR measurement circuits by inserting or removing capacitors having different values into the circuits. A change of position of a single switching member is used to change the contact state of at least two capacitors. In some embodiments, at least two pairs of external contacts are disposed at distinct longitudinal levels along a channel, and a slider including multiple longitudinally-spaced capacitors is moved longitudinally within the channel to establish electrical contact between the external contact pairs and different capacitors along the slider. In other embodiments, two capacitor columns are disposed along the channel, and a movable longitudinal member establishes electrical contact between the two columns at different longitudinal levels along the columns. In some embodiments, capacitor covers or intracapacitor blocks are provided to protect the capacitors. An auxiliary inductor may also be inserted into the circuits.
摘要翻译： NMR（核磁共振）电容器开关允许通过将具有不同值的电容器插入或移除到电路中来调节NMR测量电路的谐振频率范围。使用单个开关元件的位置变化来改变至少两个电容器的接触状态。在一些实施例中，至少两对外部触头沿着通道设置在不同的纵向水平处，并且包括多个纵向间隔的电容器的滑块在通道内纵向移动以在外部接触对和沿着该通道的不同电容器之间建立电接触滑块在其他实施例中，两个电容器柱沿着通道布置，并且可移动纵向构件在沿着列的不同纵向水平处在两个柱之间建立电接触。在一些实施例中，提供电容器盖或电容器内部块以保护电容器。辅助电感器也可以插入到电路中。

12. 发明申请

US20090184710A1 Capacitor switches for nmr 失效
标题翻译：用于nmr的电容开关
公开(公告)号：US20090184710A1
公开(公告)日：2009-07-23
申请号：US10592723
申请日：2004-09-03
申请人： James Finnigan , Joseph Murphy
发明人： James Finnigan , Joseph Murphy
IPC分类号： G01R33/20
CPC分类号： G01R33/3628 , G01R33/3635
摘要： NMR (Nuclear Magnetic Resonance) capacitor switches allow for adjusting the resonant frequency ranges of NMR measurement circuits by inserting or removing capacitors having different values into the circuits. A change of position of a single switching member is used to change the contact state of at least two capacitors. In some embodiments, at least two pairs of external contacts are disposed at distinct longitudinal levels along a channel, and a slider including multiple longitudinally-spaced capacitors is moved longitudinally within the channel to establish electrical contact between the external contact pairs and different capacitors along the slider. In other embodiments, two capacitor columns are disposed along the channel, and a movable longitudinal member establishes electrical contact between the two columns at different longitudinal levels along the columns. In some embodiments, capacitor covers or intracapacitor blocks are provided to protect the capacitors. An auxiliary inductor may also be inserted into the circuits.
摘要翻译： NMR（核磁共振）电容器开关允许通过将具有不同值的电容器插入或移除到电路中来调节NMR测量电路的谐振频率范围。使用单个开关元件的位置变化来改变至少两个电容器的接触状态。在一些实施例中，至少两对外部触头沿着通道设置在不同的纵向水平处，并且包括多个纵向间隔的电容器的滑块在通道内纵向移动，以在外部接触对和沿着不同电容器的不同电容器之间建立电接触滑块在其他实施例中，两个电容器柱沿着通道布置，并且可移动纵向构件在沿着列的不同纵向水平处在两个柱之间建立电接触。在一些实施例中，提供电容器盖或电容器内部块以保护电容器。辅助电感器也可以插入到电路中。

13. 发明授权

US07023210B1 NMR systems employing inverted variable capacitors 失效
标题翻译：采用反向可变电容器的NMR系统
公开(公告)号：US07023210B1
公开(公告)日：2006-04-04
申请号：US10965481
申请日：2004-10-14
申请人： James Finnigan
发明人： James Finnigan
IPC分类号： G01V3/00
CPC分类号： G01R33/3628
摘要： According to some embodiments, NMR (nuclear magnetic resonance) circuits include one or more variable capacitors each having two concentric cylindrical conductors. The inner conductor is connected to an upper external contact disposed closer to the NMR sample coil than the outer conductor. The inner conductor and upper contact are generally exposed to higher voltages than the outer conductor, and the upper contact is shorter than the outer conductor. Capacitance adjustment is performed by moving the inner conductor longitudinally within the outer conductor. Using a relatively short contact for the higher-voltage capacitor node allows reducing the surface area most conducive to arcing, and allows reducing lead lengths and stray capacitances. Shorting the capacitor may be performed by moving the inner conductor to contact a capacitor base situated opposite the upper external contact.
摘要翻译：根据一些实施例，NMR（核磁共振）电路包括一个或多个可变电容器，每个可变电容器具有两个同心圆柱形导体。内部导体连接到比外部导体更靠近NMR采样线圈设置的上部外部触点。内导体和上触点通常暴露于比外导体更高的电压，并且上触点短于外导体。通过在外部导体内纵向移动内部导体来进行电容调节。对于较高电压电容器节点使用相对较短的触点，可以减少最有利于电弧的表面积，并且可以减少引线长度和杂散电容。可以通过移动内部导体来接触与上部外部接触件相对的电容器基座来执行短路电容器。

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