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    • 72. 发明授权
    • Semiconductor switching apparatus and method of controlling a
semiconductor switching element
    • 半导体开关装置及半导体开关元件的控制方法
    • US5777506A
    • 1998-07-07
    • US700874
    • 1996-08-21
    • Kazuhiro KurachiMasanori Yamamoto
    • Kazuhiro KurachiMasanori Yamamoto
    • H01L29/744H01L29/74H02M1/06H03K17/0812H03K17/0814H03K17/16H03K17/72H03K17/732
    • H03K17/08144H03K17/08124H03K17/16H03K17/732
    • An inductance in a path (R1) from a gate electrode (3G) of a GTO (3) through a gate driver (4) and a node (13) to a cathode electrode (3K) is determined so that a turn-off gain may be not more than 1. At a turn-off, a main current (I.sub.A) is entirely commutated from the gate electrode (3G) towards the node (13) through the gate driver (4) in a direction reverse to a turn-off control current (I.sub.G) A peak voltage suppressing circuit (5) clamps an anode-cathode voltage (V.sub.A-K) which rises on, to a prescribed voltage value for a prescribed time. This prevents losses caused by a snubber circuit. Commutation of a main current to the gate prevents locally concentrating in the cathode side of the semiconductor switching element, to thereby increase the turn off capability of the semiconductor switching element. Further, this prevents or reduces dissipation of large amount produced by a discharge of the electric charges from a snubber capacitor. Thus, reduction in dissipation and in size of the whole apparatus can be achieved.
    • 确定从GTO(3)通过栅极驱动器(4)和节点(13)到阴极电极(3K)的栅电极(3G)的路径(R1)中的电感,使得关断增益 在关断时,主电流(IA)通过栅极驱动器(4)在与栅极电极(3G)相反的方向上从栅电极(3G)整个地转向节点(13) 关闭控制电流(IG)峰值电压抑制电路(5)将上升的阳极 - 阴极电压(VA-K)钳位到规定电压值达规定时间。 这可以防止由缓冲电路引起的损耗。 对栅极的主电流的换向防止半导体开关元件的阴极侧的局部集中,从而增加半导体开关元件的关断能力。 此外,这防止或减少由缓冲电容器放电电荷产生的大量的耗散。 因此,可以实现整个装置的耗散和大小的减小。
    • 77. 发明授权
    • Erectable container
    • 可立式容器
    • US4705209A
    • 1987-11-10
    • US904353
    • 1986-09-08
    • Takeo FujiharaAkira YamataniMasanori YamamotoYuji Kunimoto
    • Takeo FujiharaAkira YamataniMasanori YamamotoYuji Kunimoto
    • B65D5/20B65D5/24B65D5/66
    • B65D5/241B65D5/2033B65D5/2047B65D5/2057
    • An erectable container formed by folding a single base board, in which a bottom surface is made in a polygonal form having more than six sides of an even number, first and second side plates are alternately integrally provided extending from each side of the bottom surface provided with a concave fold line, a lid plate is integrally provided at the edge of the first side plate, a tab is integrally provided at the edge of the second side plate, the second side plate being provided with two first convex fold lines extending till upper ends from each vertex at the lower end thereof and the tab being provided with two second convex fold lines extending till upper ends from each end of the first convex fold lines and approaching toward each other with an inclination greater than that of the first convex fold lines, and the boundary line between the second side plate and the tab is made a concave fold at the portion between each end of the first convex fold.
    • 通过折叠单个基板形成的可直立容器,其中底表面制成具有多于六个边的多边形形状的第一和第二侧板,其交替地一体地设置,从设置的底面的每一侧延伸 具有凹折线,在第一侧板的边缘处一体地设置有盖板,在第二侧板的边缘处一体地设置有突片,第二侧板设置有两个延伸到上部的第一凸折线 从其顶端的每个顶端开始,并且突片设置有两条第二凸折线,该第二凸折线从第一凸折线的每一端延伸至上端,并且以比第一凸折线的倾斜大的方式朝向彼此靠近 并且第二侧板和突片之间的边界线在第一凸折的每个端部之间的部分处形成凹折。