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    • 8. 发明授权
    • Magnetic sensor chip and magnetic sensor
    • 磁传感器芯片和磁传感器
    • US09588192B2
    • 2017-03-07
    • US14004255
    • 2012-01-21
    • Bingjun QuWei Xiong
    • Bingjun QuWei Xiong
    • B82Y25/00G01R33/05G01R33/09H01L43/08
    • G01R33/05B82Y25/00G01R33/093H01L43/08
    • Disclosed are a magnetic sensor chip and a magnetic sensor. The magnetic sensor chip comprises a magnetic sensitive film (2, 21), and in the longitudinal direction of the magnetic sensitive film (2, 21) are provided a number n of suppression units (4) capable of achieving the sectionalized suppression of a demagnetizing field, where the number n is an integer equal to or greater than 2. By means of the suppression units (4) arranged in the longitudinal direction of the magnetic sensitive film (2, 21), the magnetic sensitive film (2, 21) to achieve a suppression of a demagnetizing field, so as to reduce or even eliminate the hysteresis of the magnetic sensitive film (2, 21), thus improving the sensitivity of the magnetic sensor chip.
    • 公开了一种磁传感器芯片和磁传感器。 磁传感器芯片包括一个感光膜(2,21),并且在磁敏膜(2,21)的长度方向设置有数个n个抑制单元(4),能够实现对磁化膜 磁场,其中数字n为等于或大于2的整数。通过沿着磁敏膜(2,21)的纵向布置的抑制单元(4),感光膜(2,21) 以实现对退磁场的抑制,从而减少或甚至消除磁敏膜(2,21)的滞后,从而提高磁传感器芯片的灵敏度。
    • 9. 发明授权
    • End of life control for parallel lamp ballast
    • 平行灯镇流器的寿命终止控制
    • US08947020B1
    • 2015-02-03
    • US13478583
    • 2012-05-23
    • Wei Xiong
    • Wei Xiong
    • G05F1/00H05B37/02H05B39/04H05B41/36
    • H05B41/2855
    • A light fixture includes a ballast and a plurality of lamps connected to the ballast in parallel. The ballast provides an output signal to the plurality of lamps as a function of a 1st steady state condition. When the ballast senses an end-of-life condition for a lamp of the plurality of lamps, the ballast increases the frequency of the output signal provided to the plurality of lamps until the lamp ceases to conduct current. When the lamp ceases to conduct current, the ballast decreases the frequency of the output signal to a frequency determined as a function of a 2nd steady state condition different from the 1st steady state condition. A total current of the 2nd steady state condition is proportional to a total current of the 1st steady state condition as a function of the number of lamps exhibiting an end-of-life condition.
    • 灯具包括平行连接到镇流器的镇流器和多个灯。 镇流器作为第一稳态条件的函数向多个灯提供输出信号。 当镇流器感测到多个灯的灯的寿命终止状态时,镇流器增加提供给多个灯的输出信号的频率,直到灯停止导通电流。 当灯停止导通电流时,镇流器将输出信号的频率降低到与第一稳态条件不同的第二稳态条件的函数确定的频率。 第二稳态条件的总电流与作为呈现寿命终止状态的灯的数量的函数的第一稳态条件的总电流成比例。
    • 10. 发明授权
    • Indirect line voltage conduction angle sensing for a chopper dimmed ballast
    • 间接线电压导通角检测用于斩光器调光镇流器
    • US08947015B1
    • 2015-02-03
    • US13483531
    • 2012-05-30
    • Wei Xiong
    • Wei Xiong
    • H05B37/02
    • H05B41/3924
    • A ballast includes a rectifier, DC to DC converter, a dimming sensor, and a light source driver circuit. The rectifier provides rectified power from an AC power source modified by a chopper dimmer. The converter includes a boost inductor having a primary winding and a detection winding. The converter receives the rectified power from the rectifier and provides a DC power rail. The dimming sensor monitors a voltage of the detection winding of the boost inductor and provides a dimming signal as a function of the monitored voltage. The light source driver circuit receives the dimming signal, receives the DC power rail, and provides power from the DC power rail to the light source as a function of the dimming signal. An amount of power provided to the light source by the light source driver circuit corresponds to a dimming level indicated by the dimming signal.
    • 镇流器包括整流器,DC-DC转换器,调光传感器和光源驱动电路。 整流器通过由斩波调光器修改的交流电源提供整流电源。 该转换器包括具有初级绕组和检测绕组的升压电感器。 转换器从整流器接收整流后的电源,并提供直流电源轨。 调光传感器监测升压电感的检测绕组的电压,并提供作为监测电压的函数的调光信号。 光源驱动电路接收调光信号,接收直流电源轨,并根据调光信号从直流电源轨向光源提供电力。 由光源驱动电路提供给光源的功率量对应于由调光信号指示的调光电平。