利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

145 条记录 (耗时 0.014 秒)

    Switching arrangement
    1.
    发明公开
    Switching arrangement 有权
    开关装置

    公开(公告)号：EP0967722A3

    公开(公告)日：2000-07-12

    申请号：EP99304899.0

    申请日：1999-06-22

    申请人： EEV LIMITED

    发明人： Iskander, Stephen Mark ,  Richardson, Robert

    IPC分类号： H03K17/687 ,  H03K17/691

    CPC分类号： H03K17/691 ,  H03K17/102

    摘要： In a switching arrangement, a plurality of modules are connected such that the main switching elements, FETs 2, are in series. Control of and power to the FETs 2 is supplied via a single turn primary 3 passing through a plurality of toroidal secondary transformers 4. A train of control pulses is applied to the single turn primary 3 and their polarity determines whether the main FET 2 is switched on or off, the length of the pulse train determining the pulse width and PRF of the output of the switching arrangement. The control pulses are also used to supply power to the main driver 10 of the main FET 2.

    Solid state imagers
    2.
    发明公开
    Solid state imagers 审中-公开
    固态成像

    公开(公告)号：EP0912048A3

    公开(公告)日：2000-07-12

    申请号：EP98307140.8

    申请日：1998-09-04

    申请人： Eev Limited

    发明人： Allen, Brian Philip

    IPC分类号： H04N5/32

    CPC分类号： H04N5/2254 ,  H04N5/32

    摘要： In an intra oral dental X-ray system, a solid state imager (1) includes an array of CMOS pixel circuits (6) and has a fibre optic taper (5) located between the array (6) and scintillator material (4). During use, X-ray radiation transmitted via an object (2) to be imaged from a source (3) and is incident on the scintillator material (4) where it is converted into light. The light is transmitted via the taper (5) to the array (6) where an image is generated which is representative of the radiation transmitted through the object (2). The fibre optic taper (5) provides good image quality and maintains resolution.

    Manufacturing method for a solar cell having a protection diode
    3.
    发明公开
    Manufacturing method for a solar cell having a protection diode 有权
    具有保护二极管的太阳能电池的制造方法

    公开(公告)号：EP0984496A2

    公开(公告)日：2000-03-08

    申请号：EP99306968.1

    申请日：1999-09-02

    申请人： EEV LIMITED

    发明人： Taylor, Stephen John ,  Hardingham, Christopher Mark ,  Cross, Trevor Arthur

    IPC分类号： H01L31/068 ,  H01L27/142

    CPC分类号： H01L31/0443 ,  Y02E10/50

    摘要： In a manufacturing method of a solar cell arrangement, a p-n junction is formed in semiconductor material which is then separated to give a main body and an off-cut. The off-cut is connected in reverse parallel across the main body so as to act as a protection diode for a solar cell which comprises that main body. The off-cut protection diode may be placed adjacent the main body or may alternatively be mounted on the front or rear of the solar cell.

    摘要翻译： 在太阳能电池装置的制造方法中，在半导体材料中形成p-n结，然后将其分离以给出主体和切割。 该切口在主体上反向并联连接，以作为包括该主体的太阳能电池的保护二极管。 偏离切割保护二极管可以放置在主体附近，或者可选地可以安装在太阳能电池的前面或后面。

    Linear electron beam tubes
    6.
    发明公开
    Linear electron beam tubes 失效
    线性电子束管

    公开(公告)号：EP0753877A3

    公开(公告)日：1997-01-29

    申请号：EP96304943.2

    申请日：1996-07-04

    申请人： EEV LIMITED

    发明人： Pickering,Alan Hugh

    IPC分类号： H01J23/15 ,  H01J25/04

    CPC分类号： H01J25/04 ,  H01J23/15

    摘要： In a tube such as an IOT, an electron gun includes a cathode 2 grid and anode surrounded by a resonant input cavity 5. A grid lead 10 supplies a voltage to the grid 3 and includes a filter comprising a capacitor 11 and inductor 12 which are both approximately one quarter wavelength long at a selected frequency to reduce or prevent rf leakage along the grid lead. The grid lead is arranged to extend through the cavity 5 and is located within the interior space which is surrounded by the annular cavity 5.

    摘要翻译： 在诸如IOT的管中，电子枪包括由谐振输入腔5包围的阴极2栅极和阳极。栅极引线10向栅极3提供电压并且包括包括电容器11和电感器12的滤波器，它们是 在选定频率下长约四分之一波长，以减少或防止沿栅极引线的rf泄漏。 格栅引线布置成延伸穿过空腔5并且位于​​由环形空腔5围绕的内部空间内。

    Electron beam tubes
    8.
    发明公开
    Electron beam tubes 失效
    电子束管

    公开(公告)号：EP0632481A1

    公开(公告)日：1995-01-04

    申请号：EP94304305.9

    申请日：1994-06-14

    申请人： EEV LIMITED

    发明人： Sobieradzki, Edward Stanislaw, Dr. ,  Bardell, Steven

    IPC分类号： H01J25/04 ,  H01J23/54 ,  H01J23/15

    CPC分类号： H01J23/54 ,  H01J23/15 ,  H01J25/04

    摘要： In an electron beam tube, such as an IOT, ferrite loaded silicone rubber 30 or some other ferrite loaded dielectric material, is carried by a wall 25 of an input cavity 7. The material absorbs r.f. energy, reducing coupling between different parts of the tube which could otherwise result in undesirable oscillation. Furthermore, its provision on part of the input cavity wall enables easy access to be made for replacement and servicing requirements.

    摘要翻译： 在诸如IOT的电子束管中，载有铁氧体的硅橡胶30或一些其它载有铁氧体的电介质材料由输入腔7的壁25承载。该材料吸收r.f. 能量，减少了管的不同部分之间的耦合，否则可能导致不希望的振荡。 此外，在部分输入腔壁上提供了易于访问的替代和维修要求。

    Electron gun arrangements
    9.
    发明公开
    Electron gun arrangements 失效
    电子束发生装置。

    公开(公告)号：EP0589606A2

    公开(公告)日：1994-03-30

    申请号：EP93307233.2

    申请日：1993-09-14

    申请人： EEV LIMITED

    发明人： Arnold, Barry James ,  Shakespeare, Brian Alfred Henry

    IPC分类号： H01J23/065 ,  H01J25/34 ,  H01J1/88 ,  H01J3/02

    CPC分类号： H01J23/065 ,  H01J3/027

    摘要： An electron gun arrangement which is particularly suitable for use in travelling wave tubes includes a substantially cylindrical ceramic body (20) which partly defines a vacuum envelope. The body (20) surrounds an electrode assembly constituted by cathode (21), grids (22,23 and 24) and an anode (25). The leads to the grids and cathode are extensive in a generally longitudinal axial direction at the end of the body (20) remote from the anode (25), electrical connection being made via pins (30-33) and metallised apertures (26-29) extensive longitudinally through the wall of the body (20). The internal diameter of the body (20) may be stepped to define ridges (38-40) to which supports for parts of the electrode assembly are fixed.