Proximity detector employing magneto resistive sensor in the central
magnetic field null of a toroidal magnet
    1.
    发明授权
    Proximity detector employing magneto resistive sensor in the central magnetic field null of a toroidal magnet 失效
    接近检测器采用磁阻传感器在环形磁铁的中心磁场无效

    公开(公告)号:US4857841A

    公开(公告)日:1989-08-15

    申请号:US139350

    申请日:1987-12-29

    IPC分类号: G01D5/14 G01D5/16 H03K17/95

    摘要: The present invention is a proximity sensor employing a magneto resistive structure. This proximity sensor includes a toroidal magnet having a central aperture, an inner circumference and an outer circumference. This toroidal magnet has a first magnetic pole at the inner circumference and a second magnetic pole at the outer circumference thereby creating a magnetic field null at a center portion of the central aperture. A magneto resistive structure is disposed at the magnetic field null in the central aperture of the toroidal magnetic. This magneto resistive structure has a resistance dependent upon magnetic flux. The proximity of a magnetically permeable target to the toroidal magnet shifts the position of the magnetic null, thereby causing a large change in the magnetic flux through the magneto resistive structure. An electrical detection circuit detects changes in this resistance for indication of the proximity of the magnetically permeable target.

    摘要翻译: 本发明是采用磁阻结构的接近传感器。 该接近传感器包括具有中心孔,内圆周和外圆周的环形磁体。 该环形磁铁在内周具有第一磁极,在外周具有第二磁极,从而在中心孔的中心部分产生磁场零点。 磁阻结构设置在环形磁心的中心孔中的磁场为零。 该磁阻结构具有取决于磁通量的电阻。 导磁目标与环形磁铁的接近度使磁零位移动,从而导致通过磁阻结构的磁通量的大的变化。 电检测电路检测该电阻的变化,以指示导磁目标的接近度。

    Current transformer using a laminated toroidal core structure and a lead
frame
    2.
    发明授权
    Current transformer using a laminated toroidal core structure and a lead frame 失效
    电流互感器使用层叠环形芯结构和引线框架

    公开(公告)号:US5425166A

    公开(公告)日:1995-06-20

    申请号:US277403

    申请日:1994-07-19

    摘要: A current transformer device is formed on a ceramic substrate which is provided with a plurality of planar conductive tracks formed on a surface of the substrate where the conductive tracks extend substantially radially from an imaginary point on the surface of the substrate. A structure of permeable material is then tape cast or epitaxially formed by vapor deposition of a thick film of magnetic ceramic over the major portion of each of the conductive tracks to form a permeable toroidal core. A lead frame is then placed over the core and a plurality of metal conductors are soldered to each of the respective exposed ends of the metal conductive tracks on the substrate. The required electrical elements to complete the current transformer device are mounted to a second side of the ceramic substrate and electrically connected to the toroidal coil for powering and/or receiving signals therefrom.

    摘要翻译: 电流互感器装置形成在陶瓷基片上,该陶瓷基片上设有形成在基片表面上的多个平面导电迹线,导电迹线从基片表面的假想点基本径向延伸。 然后通过在每个导电轨道的主要部分上蒸镀一层厚厚的磁性陶瓷,将可渗透材料的结构胶带或外延形成,以形成可渗透的环形芯。 然后将引线框架放置在芯上,并且将多个金属导体焊接到衬底上的金属导电轨道的相应的暴露端中的每一个。 完成电流互感器装置的所需电气元件安装在陶瓷基片的第二侧上,并电连接到环形线圈,用于向其提供和/或接收信号。

    Electrical contactor employing a rotary disc
    3.
    发明授权
    Electrical contactor employing a rotary disc 失效
    使用旋转盘的电接触器

    公开(公告)号:US5319167A

    公开(公告)日:1994-06-07

    申请号:US27971

    申请日:1993-03-08

    摘要: An electrical contractor device (80) for controlling the flow of electrical power from a source of electrical power to an electrical device according to a command signal from a controller utilizing a rotary disc assembly (90) rotated by an actuator (169) where the rotary disc assembly (90) is comprised of a rotary disc (100) supporting a disc conductor (102) having a pair of contact pads (106, 108) joined by a pair of conductor legs (109, 113) and a center section (111) where the conductor legs (109, 113) are parallel and offset one from the other straddling an axis of rotation (103) where high flow of electrical current through the disc conductor (102) generates an electro-magnetic torque in the rotary disc assembly (90). The disc contacts (106, 108) make electrical contact with a corresponding number of stationary contacts (110,112) of a "turn back" design one of which is connected one to a source of electrical power and the second to the device whose operation is to be controlled were as the rotary disc (100) is rotated by the actuator means (169), the disc contacts (106, 108) make electrical connection with the stationary contacts (110, 112) and when the actuator (169) is not energized a return spring (176) causes the rotary disc (100) to rotate in an opposite direction thereby causing the stationary contacts (110, 112) to be forced away from the rotary disc (100) by a separation ramp (140, 142). A disc conductor (102) is formed to induce a rotary torque in the rotary disc (100) when an abnormally high electrical current is conducted thereby breaking the conduction path by rotating the rotary disc (100) in conjunction with the return spring (176) to overcome the spring (180) connecting actuator (169) and open the contactor device (80).

    摘要翻译: 一种用于根据来自控制器的命令信号来控制从电源到电气设备的电力的电气承包设备(80),所述控制器利用由致动器(169)旋转的旋转盘组件(90),旋转盘组件 盘组件(90)包括支撑盘导体(102)的旋转盘(100),该盘导体具有通过一对导体腿(109,113)和中心部分(111)连接的一对接触垫(106,108) ),其中导体腿(109,113)平行并偏离另一个跨越旋转轴线(103),其中通过盘导体(102)的高流量电流在旋转盘组件中产生电磁转矩 (90)。 光盘触点(106,108)与相应数量的“回转”设计的固定触点(110,112)电接触,其中一个连接到一个电源,第二个固定触点(110,112)的操作是 当旋转盘(100)由致动器装置(169)旋转时,盘接触件(106,108)与固定触头(110,112)电连接,并且当致动器(169)未通电时 复位弹簧(176)使旋转盘(100)沿相反的方向旋转,从而通过分离斜坡(140,142)使固定触点(110,112)被迫离开旋转盘(100)。 当导体异常高的电流导致旋转盘(100)中的旋转扭矩时,形成盘形导体(102),从而通过与回转弹簧(176)结合旋转旋转盘(100)来破坏传导路径, 以克服弹簧(180)连接致动器(169)并打开接触器装置(80)。

    Current transformer using a laminated toroidal core structure and a lead
frame
    4.
    发明授权
    Current transformer using a laminated toroidal core structure and a lead frame 失效
    电流互感器使用层叠环形芯结构和引线框架

    公开(公告)号:US5430613A

    公开(公告)日:1995-07-04

    申请号:US69338

    申请日:1993-06-01

    摘要: A current transformer device is formed on a ceramic substrate which is provided with a plurality of planar conductive tracks formed on a surface of the substrate where the conductive tracks extend substantially radially from an imaginary point on the surface of the substrate. A structure of permeable material layers is then tape cast or epitaxially formed by vapor deposition of a thick film of magnetic ceramic over the major portion of each of the conductive tracks to form a permeable toroidal core. A lead frame is then placed over the core and a plurality of metal conductors are soldered to each of the respective exposed ends of the metal conductive tracks on the substrate to form a toroidal coil surrounding the toroidal core. The required electrical elements to complete the current transformer device are mounted to a second side of the ceramic substrate and electrically connected to the toroidal coil for powering and/or receiving signals therefrom.

    摘要翻译: 电流互感器装置形成在陶瓷基片上,该陶瓷基片上设有形成在基片表面上的多个平面导电迹线,导电迹线从基片表面的假想点基本径向延伸。 然后通过在每个导电轨道的主要部分上蒸镀一层厚厚的磁性陶瓷,将可渗透材料层的结构胶带或外延形成,以形成可渗透的环形芯。 然后将引线框放置在芯上,并且将多个金属导体焊接到衬底上的金属导电轨道的相应暴露端中的每一个,以形成环绕环形芯的环形线圈。 完成电流互感器装置的所需电气元件安装在陶瓷基片的第二侧上,并电连接到环形线圈,用于向其提供和/或接收信号。

    MRS current sensor
    5.
    发明授权
    MRS current sensor 失效
    MRS电流传感器

    公开(公告)号:US4841235A

    公开(公告)日:1989-06-20

    申请号:US61351

    申请日:1987-06-11

    IPC分类号: G01R15/20

    CPC分类号: G01R15/205

    摘要: A current sensor (10) comprising spaced pole pieces (62, 64) and a magnetic shunt (80) bridging the pole pieces within an insulating housing assembly (12) which also contains a magnetoresistive transducer (90) and electronic circuitry (16) for sensing magnetic field intensity between the pole pieces and relating that intensity as electric signals provided at terminals (26) at the exterior of the housing. The transducer senses magnetic field intensity along a principal axis (88). Permanent magnets (94, 96) or induction coils (276, 278) are provided to establish a biasing component of magnetic field intensity along an axis (98) substantially normal to the principal axis to improve sensor sensitivity, range of operation and immunity to current overload.

    Current sensor for universal application
    6.
    发明授权
    Current sensor for universal application 失效
    电流传感器用于通用应用

    公开(公告)号:US4791361A

    公开(公告)日:1988-12-13

    申请号:US061355

    申请日:1987-06-11

    IPC分类号: G01R15/20 G01R1/04

    CPC分类号: G01R15/205

    摘要: A magnetic flux concentrator comprising spaced pole pieces (4,6) and magnetic shunt (8) bridging the pole pieces within an insulating housing (2) which also contains a magnetoresistive transducer (24) and electronic circuitry (26) for sensing magnetic field intensity between the pole pieces and relating that intensity as electric signals provided at wiring terminals (28) at the exterior of the housing. The pole pieces have magnetic terminal portions adjacent openings in the housing for removable attachment thereto of selected ferrous strap configurations (42,50,52,60) determined by the cross-sectional shape of the electrical conductor (46) in which current flow is to be measured, the respective strap configuration and flux concentrator forming a magnetic loop around the conductor for picking up the magnetic flux induced by current flow in the conductor.

    Rotary solenoid utilizing concurrently energized AC and DC coils
    8.
    发明授权
    Rotary solenoid utilizing concurrently energized AC and DC coils 失效
    旋转电磁线圈使用同时供电的交流和直流线圈

    公开(公告)号:US5280260A

    公开(公告)日:1994-01-18

    申请号:US928592

    申请日:1992-08-13

    CPC分类号: H01F7/14

    摘要: A rotary solenoid having at least one AC coil and at least one DC coil where the AC coil and the DC coil are concurrently energized by an AC electrical source and a DC electrical source, respectively for enhanced actuation torque and low noise with decreased temperature rise and package size.

    摘要翻译: 一种具有至少一个AC线圈和至少一个DC线圈的旋转螺线管,其中AC线圈和DC线圈同时由AC电源和DC电源激励,分别用于增强致动转矩和降低温度升高的低噪声, 包装尺寸。

    Magneto resistive current sensor with improved fidelity
    10.
    发明授权
    Magneto resistive current sensor with improved fidelity 失效
    磁阻电流传感器具有更高的保真度

    公开(公告)号:US4857837A

    公开(公告)日:1989-08-15

    申请号:US139352

    申请日:1987-12-29

    IPC分类号: G01R1/067 G01R15/20

    CPC分类号: G01R1/06766 G01R15/205

    摘要: The present invention is a current sensor employing a magneto resistive sensor having high fidelity of output. This current sensor includes a magnetic flux concentrator substantially encircling the electrical conductor having magnetic sensing, a magnetic device generating a magnetic field component along an axis offset from the principle axis, a magneto resistive device disposed in the magnetic sensing region, a constant current source supplying a predetermined constant current to said magneto resistive device, and a voltage sensing circuit connected to said magneto resistive device for measuring resistance by measuring a difference voltage induced by said constant current. This measured voltage corresponds to the current through the conductor. The magneto resistive device is formed as a Wheatstone bridge having a first and second pair of opposite terminals. The constant current source provides a predetermined constant current whereby the change with temperature in the differential voltage between said second pair of terminals is equal and opposite to the change in voltage of the total bridge resistance with temperature and the change in the bridge offset voltage with temperature.

    摘要翻译: 本发明是采用具有高保真输出的磁阻传感器的电流传感器。 该电流传感器包括基本上环绕具有磁感测的电导体的磁通量集中器,沿着与主轴偏离的轴产生磁场分量的磁性装置,设置在磁感应区域中的磁阻元件,恒流源 向所述磁阻器件施加预定的恒定电流,以及连接到所述磁阻器件的电压检测电路,用于通过测量由所述恒定电流引起的差值电压来测量电阻。 该测量电压对应于通过导体的电流。 磁阻电阻器形成为具有第一和第二对相对端子的惠斯通电桥。 恒定电流源提供预定的恒定电流,由此在所述第二对端子之间的差分电压中随温度的变化等于并且与总桥电阻随温度变化的电压和桥接偏移电压随温度的变化相反 。