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公开(公告)号：EP0262958A2
公开(公告)日：1988-04-06
申请号：EP87308676.3
申请日：1987-09-30
发明人： Ogura, Tsuneo c/o Patent Division , Takigami, Katsuhiko c/o Patent Division , Nakagawa, Akio c/o Patent Division , Domon, Tomokazu c/o Patent Division
CPC分类号： H01L29/0834 , H01L29/744 , H03K17/732 , H03K2217/0036
摘要： A gate turn-off thyristor drive system with low power loss when it is in the turn-off mode, is disclosed. A first turn-off pulse of a predetermined amplitude is applied to a first gate electrode (16). A second turn-off pulse is applied to a second gate electrode (18). An amplitude of the second turn-off pulse is smaller in absolute value than that of the first turn-off pulse. The fall time of the anode current at the time of turn-off is reduced, and the initial value of the tail current of the anode current is reduced. The power loss as the product of the anode voltage and the anode current is reduced.
摘要翻译： 公开了一种门关断晶闸管驱动系统，当其处于关断模式时具有低功率损耗。 预定幅度的第一关断脉冲被施加到第一栅电极（16）。 第二关断脉冲被施加到第二栅电极（18）。 第二关断脉冲的振幅的绝对值小于第一关断脉冲的振幅。 关断时阳极电流的下降时间减少，并且阳极电流的尾电流的初始值降低。 作为阳极电压和阳极电流的乘积的功率损失减小。
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公开(公告)号：EP0146382B1
公开(公告)日：1990-03-07
申请号：EP84308792.5
申请日：1984-12-17
发明人： Kobayashi, Tadahiko c/o Patent Division , Inomata, Koichiro c/o Patent Division , Fukuda, Hironori c/o Patent Division , Sahashi, Masashi c/o Patent Division , Domon, Tomokazu c/o Patent Division
IPC分类号： G01L3/10
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公开(公告)号：EP0146382A2
公开(公告)日：1985-06-26
申请号：EP84308792.5
申请日：1984-12-17
发明人： Kobayashi, Tadahiko c/o Patent Division , Inomata, Koichiro c/o Patent Division , Fukuda, Hironori c/o Patent Division , Sahashi, Masashi c/o Patent Division , Domon, Tomokazu c/o Patent Division
IPC分类号： G01L3/10
摘要： In a torque sensor of a noncontact type for sensing a torque applied to a shaft (2), a magnetic ribbon (4) is bonded to a circumferential portion of the peripheral surface of the shaft (2), and a core member made (6) of a magnetic material is arranged above the shaft surface so that its end faces are faced to the magnetic ribbon (4). An exciting coil (8) and a detecting coil (10) are wound around the core (6) so that a magnetic flux produced by the exciting coil (8) and delivered to the detecting coil (10) is detected by the detecting coil (10). The magnetic ribbon (4) has a length LO equal to or smaller than one half of the circumferential length Ls of the shaft 4 and satisfying an inequality given by where L1 is the center-to-center distance between the dn faces of the core (6).
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公开(公告)号：EP0262958B1
公开(公告)日：1995-04-26
申请号：EP87308676.3
申请日：1987-09-30
发明人： Ogura, Tsuneo c/o Patent Division , Takigami, Katsuhiko c/o Patent Division , Nakagawa, Akio c/o Patent Division , Domon, Tomokazu c/o Patent Division
CPC分类号： H01L29/0834 , H01L29/744 , H03K17/732 , H03K2217/0036
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公开(公告)号：EP0262958A3
公开(公告)日：1989-12-06
申请号：EP87308676.3
申请日：1987-09-30
发明人： Ogura, Tsuneo c/o Patent Division , Takigami, Katsuhiko c/o Patent Division , Nakagawa, Akio c/o Patent Division , Domon, Tomokazu c/o Patent Division
CPC分类号： H01L29/0834 , H01L29/744 , H03K17/732 , H03K2217/0036
摘要： A gate turn-off thyristor drive system with low power loss when it is in the turn-off mode, is disclosed. A first turn-off pulse of a predetermined amplitude is applied to a first gate electrode (16). A second turn-off pulse is applied to a second gate electrode (18). An amplitude of the second turn-off pulse is smaller in absolute value than that of the first turn-off pulse. The fall time of the anode current at the time of turn-off is reduced, and the initial value of the tail current of the anode current is reduced. The power loss as the product of the anode voltage and the anode current is reduced.
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