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    HOLLOW FUSE BODY WITH TRENCH
    94.
    发明申请
    HOLLOW FUSE BODY WITH TRENCH 审中-公开

    公开(公告)号：US20170372862A1

    公开(公告)日：2017-12-28

    申请号：US15700566

    申请日：2017-09-11

    申请人： LITTELFUSE, INC.

    发明人： Ped Peterson Bruan ,  Grace Miranda ,  Conrado De Leon

    IPC分类号： H01H85/143 ,  H01H85/175

    CPC分类号： H01H85/143 ,  H01H85/0458 ,  H01H85/157 ,  H01H85/175

    摘要： Provided herein are protection devices, such as fuses, including a set of trenches or pockets for retention of solder therein. In some embodiments, a fuse includes a body including a center portion extending between a first and second end portions. The first end portion includes a first trench formed in a first end surface, and the second end portion includes a second trench formed in a second end surface. The fuse may further include a first and second endcaps surrounding respective first and second end portions. The fuse may include a fusible element disposed within a central cavity of the body, the fusible element extending between the first end surface and the second end surface. In some embodiments, solder may be disposed within the first trench and the second trench, wherein the solder is in contact with the fusible element, the first endcap, or the second endcap.

    Apparatus for detecting arc flash
    96.
    发明授权
    Apparatus for detecting arc flash 有权

    公开(公告)号：US09825452B2

    公开(公告)日：2017-11-21

    申请号：US14801158

    申请日：2015-07-16

    申请人： LITTELFUSE, INC.

    发明人： Niels Holmgaard ,  Jakob Seedorff

    IPC分类号： H02H1/00 ,  G01J1/44

    CPC分类号： H02H1/0023 ,  G01J1/0266 ,  G01J1/0271 ,  G01J1/0411 ,  G01J1/44 ,  G01J2001/4238 ,  H01T2/02

    摘要： An apparatus may include a sensor housing, a light sensor disposed within the sensor housing, the light sensor arranged to generate a detection signal when light impinges on the light sensor, a sensor lens disposed at least partially outside the sensor housing, wherein a distal portion of the sensor lens extends a first distance above the sensor housing, the sensor lens being transparent, wherein light received from outside the sensor housing is transmitted to the light sensor; and a light emitter assembly disposed outside the sensor housing at a second distance above the housing less than the first distance.

    RELAY FOR USE WITH MULTIPLE POWER SOURCES
    97.
    发明申请
    RELAY FOR USE WITH MULTIPLE POWER SOURCES 有权

    公开(公告)号：US20170331310A1

    公开(公告)日：2017-11-16

    申请号：US15153002

    申请日：2016-05-12

    申请人： LITTELFUSE, INC.

    发明人： Geoffrey Schwartz ,  Brian D. Crispim

    IPC分类号： H02J7/00

    CPC分类号： H02J7/0055 ,  H02J1/10 ,  H02J7/0024 ,  H02J7/0047 ,  H02J7/0063 ,  H02J2007/005 ,  H02J2007/0067

    摘要： Provided herein is a relay architecture for selecting between multiple power sources. In one approach, a first relay and first power source are electrically coupled to a first terminal. A second relay and second power source are electrically coupleable to a second terminal and to the first relay. A load is electrically coupled with at least one of the following in the case that a load voltage is below a predetermined threshold: the first terminal, the second terminal, and a third power source, wherein a power supply is provided to the load by the first power source in the case that the first power source is coupled to the first terminal. The power supply is provided to the load by the second power source when the second power source is coupled to the second terminal and the first power source is disconnected from the first terminal.

    MULTIPLE CURRENT SENSOR SYSTEM
    99.
    发明申请
    MULTIPLE CURRENT SENSOR SYSTEM 审中-公开

    公开(公告)号：US20170279261A1

    公开(公告)日：2017-09-28

    申请号：US15079531

    申请日：2016-03-24

    申请人： LITTELFUSE, INC.

    发明人： James Riley

    IPC分类号： H02H3/08 ,  B60R16/03 ,  G01R19/165

    CPC分类号： H02H3/08 ,  B60R16/03 ,  G01R19/16566 ,  H02H3/093

    摘要： Provided herein are improved current monitoring systems for monitoring currents having large ranges. A current monitor can include two or more current sensors. At least two of the current sensors can have different current measurement ranges and different current measurement sensitivities. Each current sensor can be associated with one or more current monitoring thresholds. A time delay or time threshold can correspond to each current monitoring threshold. Each current sensor can monitor a same current having a large range of possible current values. When a predetermined current threshold is exceeded for an amount of time exceeding a corresponding time threshold, a signal can be generated by the current sensor. The generated signal can indicate that the measured current exceeds the predetermined current threshold for the corresponding predetermined period of time.

    MAGNETIC SENSOR SYSTEM
    100.
    发明申请
    MAGNETIC SENSOR SYSTEM 审中-公开

    公开(公告)号：US20170276513A1

    公开(公告)日：2017-09-28

    申请号：US15077400

    申请日：2016-03-22

    申请人： LITTELFUSE, INC.

    发明人： Seong-Jae Lee

    IPC分类号： G01D5/14

    CPC分类号： G01D5/145

    摘要： Provided herein are improved magnetic sensor systems for use in linear measurement systems. A magnetic sensor can be positioned offset from a center line positioned between two magnets. The two magnets can be oriented so as to provide opposite polarities. As the magnetic sensor traverses a path parallel to the magnets and parallel to the center line, the sensor can detect a magnetic flux density provided by the two magnets. Offsetting the magnetic sensor from the center line can improve the linear range of the magnetic sensor, thereby improving the reliability and accuracy of an output signal generated by the magnetic sensor based on the detected magnetic flux density.