-
公开(公告)号：US5975714A
公开(公告)日：1999-11-02
申请号：US22103
申请日：1998-02-11
CPC分类号： H02K35/02 , F21L13/06 , F21L4/027 , F21Y2101/00
摘要： A renewable energy flashlight comprises a housing and a barrel located within the housing. The barrel has a wire coil wrapped around it, between the barrel and the housing. A magnet disposed within the barrel oscillates within the barrel when the barrel is shaken, generating an alternating current in the coil. Two springs at either end of the barrel cause the magnet to recoil when the magnet strikes the springs. An electronics assembly located within the housing includes a capacitor for storing charge, a rectifier connected to the capacitor, and means for conducting current flowing in the coil to the rectifier, to provide rectified current to the capacitor and charge the capacitor. A light emitting diode (LED) is connected to the capacitor by means of a switch, so the LED lights up when the switch is switched on.
摘要翻译： 可再生能源手电筒包括壳体和位于壳体内的筒体。 枪管具有缠绕在其上的线圈，在枪管和壳体之间。 设置在筒内的磁体在镜筒振动时在镜筒内振荡，在线圈中产生交流电流。 枪管两端的两个弹簧会使磁体在磁铁撞击弹簧时反弹。 位于壳体内的电子组件包括用于存储电荷的电容器，连接到电容器的整流器，以及用于将线圈中的电流传导到整流器的装置，以向电容器提供整流电流并对电容器充电。 发光二极管（LED）通过开关连接到电容器，因此当开关接通时，LED点亮。
-
公开(公告)号：US06220719B1
公开(公告)日：2001-04-24
申请号：US09359087
申请日：1999-07-22
IPC分类号： F21L408
CPC分类号： H02K35/02 , F21L13/06 , F21Y2115/10
摘要： A renewable energy flashlight comprises a housing and a barrel located within the housing. A wire coil wraps around the barrel, between the barrel and the housing. A magnet oscillates within the barrel when the flashlight is shaken, generating an alternating current in the coil. Two springs at either end of the barrel cause the magnet to recoil when the magnet strikes the springs. As an alternative, rebound magnets oriented to repel the charging magnet may be installed within the barrel at either end, to cause the magnet to recoil from the ends. An electronics assembly within the housing includes a capacitor for storing charge, a rectifier connected to the capacitor, and means for conducting current flowing in the coil to the rectifier, to charge the capacitor. An LED is connected to the capacitor by means of a switch, and lights up when the switch is switched on.
摘要翻译： 可再生能源手电筒包括壳体和位于壳体内的筒体。 线圈围绕筒体缠绕在筒体和壳体之间。 当手电筒摇动时，磁体在机筒内振荡，在线圈中产生交流电流。 枪管两端的两个弹簧会使磁体在磁铁撞击弹簧时反弹。 作为替代方案，定向排斥充电磁体的回弹磁体可以在任一端安装在筒内，以使磁体从端部反冲。 壳体内的电子组件包括用于存储电荷的电容器，连接到电容器的整流器，以及用于将线圈中的电流传导到整流器的装置，以对电容器充电。 LED通过开关连接到电容器，当开关打开时亮起。
-
公开(公告)号：US5825291A
公开(公告)日：1998-10-20
申请号：US827041
申请日：1997-03-25
CPC分类号： G08B13/2474 , H01Q7/04
摘要： An electronic article surveillance system capable of reliable operation at high frequencies such as about 8 MHz, has an arrangement of transmitter and receiver antennas each lying in a flat, horizontal plane in substantial alignment with each other, with the receiver antenna positioned at the floor of a passageway at an interrogation zone and the transmitter antenna positioned overhead. Each antenna takes the form of a pair of parallel-connected, coplanar loops with the transmitter-connected loops being positioned such that electrical current flows around each loop in parallel in the same direction (a ++ configuration) and in the receiver antenna electrical current flows around each loop in parallel in mutually opposite directions (a +- configuration). The antennas are approximately of the same size and overall configuration, and they are positioned in substantial alignment so that the currents induced in the receiver antenna by the field from the transmitter antenna will effectively cancel. Current variations caused by the passage of a target through the interrogation zone will be greater in some of the conductors of the receiver antenna than in others and so can be detected.
摘要翻译： 能够在诸如约8MHz的高频下可靠运行的电子物品监视系统具有发射器和接收器天线的布置，每个发射器和接收器天线彼此基本上对准地位于平坦的水平面中，而接收器天线位于 在询问区的通道和位于顶部的发射机天线。 每个天线采取一对并联连接的共面环路的形式，发射机连接的环路被定位成使得电流沿着相同的方向（a ++配置）并联在每个环路周围，并且在接收机天线中的电流 在相互相反的方向（a +配置）上并联流过每个环路。 天线大致相同的尺寸和总体配置，并且它们被定位成基本对准，使得在接收机天线中由发射机天线的场感应的电流将被有效地消除。 由目标通过询问区引起的电流变化在接收机天线的一些导体中比在其他导体中更大，因此可以检测。
-
-
搜索结果
3 条记录 (耗时 0.01 秒)
