Noninvasive blood vessel location device and method
    1.
    发明申请
    Noninvasive blood vessel location device and method 审中-公开
    无创血管定位装置及方法

    公开(公告)号:US20060100523A1

    公开(公告)日:2006-05-11

    申请号:US10985222

    申请日:2004-11-08

    IPC分类号: A61B6/00

    摘要: A handheld device for sensing and indicating the location of a blood vessel, and marking the skin adjacent to the blood vessel. The operation of the device is based on determining the difference in signal transfer amplitude between two partially overlapping infrared light paths, and moving the device until this difference is zeroed. The sensitivity of the device is enhanced by having an angle in each infrared light path such that the infrared light is primarily reflected, rather than absorbed, by the blood vessel.

    摘要翻译: 一种手持式装置,用于感测和指示血管的位置,并标记与血管相邻的皮肤。 设备的操作基于确定两个部分重叠的红外光路之间的信号传送幅度的差异,并且移动该设备直到该差为零。 通过在每个红外光路中具有角度使得红外光主要被血管反射而不是被血管吸收而增强了装置的灵敏度。

    Method and apparatus for large ratio radio frequency variable inductor and use in radio frequency power matching systems
    2.
    发明申请
    Method and apparatus for large ratio radio frequency variable inductor and use in radio frequency power matching systems 审中-公开
    用于大功率无级变频电感的方法和装置,用于射频功率匹配系统

    公开(公告)号:US20060132258A1

    公开(公告)日:2006-06-22

    申请号:US11019410

    申请日:2004-12-20

    申请人: John Ogle

    发明人: John Ogle

    IPC分类号: H03H7/38

    CPC分类号: H01F21/02 H01F21/04 H01F21/06

    摘要: A radio frequency variable inductor with a high ratio of inductance variation to minimum inductance is provided by combining both conductive elements and ferromagnetic elements in an inductance variation assembly, which is rotatably mounted inside a coil. This variable inductor is combined with fixed capacitors and a variable transformer using a rotatable primary coil to provide a complete radio frequency match system.

    摘要翻译: 通过将可旋转地安装在线圈内的电感变化组件中的导电元件和铁磁元件组合来提供具有高电感变化对最小电感的高比率的射频可变电感器。 该可变电感器与固定电容器和使用可旋转初级线圈的可变变压器组合以提供完整的射频匹配系统。

    Split-phase driver for plasma etch system
    3.
    发明授权
    Split-phase driver for plasma etch system 失效
    用于等离子体蚀刻系统的分相驱动器

    公开(公告)号:US4871421A

    公开(公告)日:1989-10-03

    申请号:US245082

    申请日:1988-09-15

    摘要: A plasma etching system includes a radio frequency generator and a parallel plate plasma reactor vessel. A phase inverter circuit is used to couple the RF generator to the electrodes in the plasma reactor so that the electrodes are driven with voltages of substantially equal magnitude but which are 180.degree. out-of-phase. In this way, a maximum potential difference between the electrodes can be achieved while minimizing the potential difference between the individual electrodes and the reactor vessel. Such operation allows higher power levels with reduced occurrence of arcing and stray discharge, and provides a stable, uniform plasma discharge.