专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US07554091B2 Feedback circuit for output control in a semiconductor X-ray detector 有权
标题翻译：用于半导体X射线检测器中输出控制的反馈电路
公开(公告)号：US07554091B2
公开(公告)日：2009-06-30
申请号：US12023960
申请日：2008-01-31
申请人： William E. Drummond , David R. Fahrbach , James V. Howard , James R. Hyatt , Kevin K. Kim , Mark E. Misenheimer , Dean A. Stocker
发明人： William E. Drummond , David R. Fahrbach , James V. Howard , James R. Hyatt , Kevin K. Kim , Mark E. Misenheimer , Dean A. Stocker
IPC分类号： H01L27/146 , G01T1/24
CPC分类号： G01T1/2928
摘要： An X-ray detector using a semiconductor detector, most preferably a Silicon Drift Detector, utilizes a field effect transistor or other voltage-controlled resistance to generate an output voltage proportional to its input charge (which is generated by the X-ray photons incident on the semiconductor detector). To keep the charge (and thus the output voltage) to an acceptable range—one wherein the relationship between output voltage and input charge is substantially proportional—a feedback circuit is provided between the output and input terminals, wherein the charge on the input terminal is depleted when the output voltage begins leaving the desired range. Preferably, this is done by a comparator which monitors the output voltage, and provides a reset signal to the input terminal when it begins moving out of range. Alternatively or additionally, the reset signal may be a pulse supplied to the input terminal from a pulse generator activated by the comparator.
摘要翻译：使用半导体检测器，最优选硅漂移检测器的X射线检测器利用场效应晶体管或其它压控电阻来产生与其输入电荷成比例的输出电压（其由入射到X射线光子的X射线光子产生）半导体检测器）。为了将电荷（以及因此的输出电压）保持在可接受的范围 - 其中输出电压和输入电荷之间的关系基本成比例 - 在输出端和输入端之间提供反馈电路，其中输入端上的电荷为当输出电压开始离开所需的范围时耗尽。优选地，这通过监视输出电压的比较器来完成，并且当其开始移动超出范围时，向输入端提供复位信号。或者或另外，复位信号可以是从由比较器激活的脉冲发生器提供给输入端的脉冲。

2. 发明授权

US07339175B1 Feedback circuit for output control in a semiconductor X-ray detector 有权
标题翻译：用于半导体X射线检测器中输出控制的反馈电路
公开(公告)号：US07339175B1
公开(公告)日：2008-03-04
申请号：US11495867
申请日：2006-07-28
申请人： William E. Drummond , David R. Fahrbach , James V. Howard , Mark E. Misenheimer , Dean A. Stocker
发明人： William E. Drummond , David R. Fahrbach , James V. Howard , Mark E. Misenheimer , Dean A. Stocker
IPC分类号： G01T1/24
CPC分类号： G01T1/2928
摘要： An X-ray detector using a semiconductor detector, most preferably a Silicon Drift Detector, utilizes a field effect transistor or other voltage-controlled resistance to generate an output voltage proportional to its input charge (which is generated by the X-ray photons incident on the semiconductor detector). To keep the charge (and thus the output voltage) to an acceptable range—one wherein the relationship between output voltage and input charge is substantially proportional—a feedback circuit is provided between the output and input terminals, wherein the charge on the input terminal is depleted when the output voltage begins leaving the desired range. Preferably, this is done by a comparator which monitors the output voltage, and provides a reset signal to the input terminal when it begins moving out of range. Alternatively or additionally, the reset signal may be a pulse supplied to the input terminal from a pulse generator activated by the comparator.
摘要翻译：使用半导体检测器，最优选硅漂移检测器的X射线检测器利用场效应晶体管或其他压控电阻来产生与其输入电荷成比例的输出电压（其由入射到X射线光子的X射线光子产生）半导体检测器）。为了将电荷（以及因此的输出电压）保持在可接受的范围 - 其中输出电压和输入电荷之间的关系基本成比例 - 在输出端和输入端之间提供反馈电路，其中输入端上的电荷为当输出电压开始离开所需的范围时耗尽。优选地，这通过监视输出电压的比较器来完成，并且当其开始移动超出范围时，向输入端提供复位信号。或者或另外，复位信号可以是从由比较器激活的脉冲发生器提供给输入端的脉冲。

3. 发明授权

US4463257A Rotatable support for selectively aligning a window with the channel of a probe 失效
标题翻译：用于选择性地将窗口与探头的通道对准的可旋转支撑
公开(公告)号：US4463257A
公开(公告)日：1984-07-31
申请号：US405531
申请日：1982-08-05
申请人： Gideon M. Simpkins , William E. Drummond
发明人： Gideon M. Simpkins , William E. Drummond
IPC分类号： H01J37/244 , G01N23/00
CPC分类号： H01J37/244 , H01J2237/2442 , H01J2237/2445 , H01J2237/24585
摘要： A mechanism is disclosed for selectively aligning one of two different radiation passing windows with the channel of a measuring device. The measuring device includes an elongated tubular probe having a channel formed therein. A spherical cap, having a diameter less than the diameter of the probe, is mounted to the end of the probe, and is rotatable between a first and second position. A pair of windows are mounted in the cap in a manner such that when the cap is oriented in the first position, the first window is aligned with the channel, and when the cap is oriented in the second position, the second window is oriented with the channel. In the preferred embodiment, an outer tubular member is mounted around the probe and includes axially projecting teeth which engage with a spur gear connected to the rotatable cap. The rotation of the outer tubular member relative to the probe drives the spur gear for rotating the cap.
摘要翻译：公开了一种用于选择性地将两个不同辐射通过窗口中的一个与测量装置的通道对准的机构。测量装置包括细长管状探针，其中形成有通道。具有直径小于探针直径的球形帽安装在探头的端部，并且可在第一和第二位置之间旋转。一对窗口以这样的方式安装在盖中，使得当盖在第一位置定向时，第一窗口与通道对准，并且当盖定向在第二位置时，第二窗口被定向为这个频道。在优选实施例中，外部管状构件安装在探头周围，并且包括与连接到可旋转盖的正齿轮啮合的轴向突出的齿。外管状构件相对于探针的旋转驱动用于旋转盖的正齿轮。

4. 发明授权

US4439732A Electrically balanced fluxgate gradiometers 失效
标题翻译：电平衡磁通门梯度计
公开(公告)号：US4439732A
公开(公告)日：1984-03-27
申请号：US266826
申请日：1981-05-26
申请人： Victor W. Hesterman , William E. Drummond
发明人： Victor W. Hesterman , William E. Drummond
IPC分类号： G01R33/022 , G01R33/04 , G01R33/02 , G01C17/28 , G01V3/165
CPC分类号： G01R33/04 , G01R33/022 , Y10S505/845
摘要： A gradiometer for measuring magnetic field gradients. The gradiometer is formed by a number of magnetic field sensing devices. Each device has its own axis of sensitivity and produces a signal proportional to the magnetic field strength in the direction of its axis of sensitivity. The devices are mounted so that the different axes of sensitivity are at different angles to each other and so that at least some of the devices are displaced from each other along a common axis. The signals from the devices are combined so as to balance out unwanted components, particularly those due to the earth's magnetic field.
摘要翻译：用于测量磁场梯度的梯度计。梯度计由多个磁场感测装置形成。每个器件都有自己的灵敏度轴，并产生与其磁敏轴方向的磁场强度成比例的信号。这些装置被安装成使得不同的灵敏轴线彼此处于不同的角度，并且使得装置中的至少一些沿共同的轴线彼此移位。来自设备的信号被组合以便平衡不期望的部件，特别是由于地球的磁场引起的那些。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式