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    • 6. 发明授权
    • Silicon carbide semiconductor device
    • 碳化硅半导体器件
    • US08766278B2
    • 2014-07-01
    • US13565388
    • 2012-08-02
    • Hideki Hayashi
    • Hideki Hayashi
    • H01L29/15H01L21/8238
    • H01L27/088H01L21/8213
    • First, second, fourth, and fifth impurity regions have a first conductivity type, and a third impurity region has a second conductivity type. The first to third impurity regions reach a first layer having the first conductivity type. The fourth and fifth impurity regions are provided on a second layer. First to fifth electrodes are provided on the first to fifth impurity regions, respectively. Electrical connection is established between the first and fifth electrodes, and between the third and fourth electrodes. A sixth electrode is provided on a gate insulating film covering a portion between the fourth and fifth impurity regions.
    • 第一,第二,第四和第五杂质区具有第一导电类型,第三杂质区具有第二导电类型。 第一至第三杂质区域到达具有第一导电类型的第一层。 第四和第五杂质区设置在第二层上。 第一至第五电极分别设置在第一至第五杂质区上。 在第一和第五电极之间以及第三和第四电极之间建立电连接。 第六电极设置在覆盖第四和第五杂质区域之间的部分的栅极绝缘膜上。
    • 9. 发明授权
    • Direct-current motor control device and method for detecting state of direct-current motor
    • 直流马达控制装置及直流马达状态检测方法
    • US08424839B2
    • 2013-04-23
    • US13020207
    • 2011-02-03
    • Hideki HayashiSatoru Hiramoto
    • Hideki HayashiSatoru Hiramoto
    • F16K31/02
    • H02K23/66F02D41/005H02P7/03Y02T10/47
    • A current detection unit detects an electric current caused by superimposing a direct current from a direct-current power source on an alternating current from an alternating-current power source and supplied through a brush to a direct-current motor. An extracting unit extracts an alternating-current component of the detected electric current. An angle detection unit detects a rotation angle of the motor according to the extracted alternating-current component. A direction detection unit detects a rotative direction of the motor according to a change pattern of the extracted alternating-current component. A core of the motor has slots each defined between adjacent two of teeth. The slots respectively accommodate phase coils respectively wound around the teeth. Turns of the phase coils are different from each other.
    • 电流检测单元通过将来自直流电源的直流电叠加到来自交流电源的交流电并通过电刷提供给直流电动机而引起的电流。 提取单元提取检测到的电流的交流分量。 角度检测单元根据所提取的交流分量检测电动机的旋转角度。 方向检测单元根据所提取的交流分量的变化模式来检测电动机的旋转方向。 电动机的铁芯在相邻的两个齿之间具有槽。 这些槽分别容纳分别缠绕在齿上的相位线圈。 相位线圈的转数彼此不同。