公开(公告)号：USRE33301E

公开(公告)日：1990-08-14

申请号：US370322

申请日：1989-06-22

申请人： Keiichi Oshikiri ,  Tooru Nakamura

发明人： Keiichi Oshikiri ,  Tooru Nakamura

IPC分类号： G01R25/00

CPC分类号： G01R25/005

摘要： A synchronism detector circuit wherein it is arranged so that two a.c. voltages the synchronism of which is to be determined are converted, respectively, into rectangular pulses, which pulses trigger a pair of one-shot multivibrators, respectively, the logical product of the outputs from these one-shot multivibrators is provided, and the thus provided logical product causes signals indicating the states of synchronism between the a.c. voltages to be output.

公开(公告)号：US4678949A

公开(公告)日：1987-07-07

申请号：US760540

申请日：1985-07-30

申请人： Keiichi Oshikiri ,  Tooru Nakamura

发明人： Keiichi Oshikiri ,  Tooru Nakamura

IPC分类号： G01R25/00 ,  H03K5/26

CPC分类号： H03K5/26 ,  G01R25/005

摘要： A synchronism detector circuit wherein it is arranged so that two a.c. voltages the synchronism of which is to be determined are converted, respectively, into rectangular pulses, which pulses trigger a pair of one-shot multivibrators, respectively, the logical product of the outputs from these one-shot multivibrators is provided, and the thus provided logical product causes signals indicating the states of synchronism between the a.c. voltages to be output.

摘要翻译： 一种同步检测器电路，其中它被布置成使得两个直流 将要确定的同步电压分别转换为矩形脉冲，这些脉冲分别触发一对单稳态多谐振荡器，提供这些单稳多谐振荡器的输出的逻辑积，并由此提供 逻辑产品导致指示ac之间的同步状态的信号 要输出的电压。

公开(公告)号：US4796145A

公开(公告)日：1989-01-03

申请号：US124337

申请日：1987-11-18

申请人： Keiichi Oshikiri

发明人： Keiichi Oshikiri

IPC分类号： H03K17/08 ,  H02M1/38 ,  H03K17/66 ,  H02H5/00

CPC分类号： H02M1/38 ,  H03K17/666

摘要： A semiconductor module includes two switching devices operated by the PWM control signal, current detectors for detecting currents through the respective switching devices, and bypass units operated by the corresponding opposite current detector for shunting the control signal to the respective switching devices to prevent activation thereof when the corresponding opposite switching device is conductive.

摘要翻译： 半导体模块包括由PWM控制信号操作的两个开关装置，用于检测通过各个开关装置的电流的电流检测器和由相应的相反电流检测器操作的旁路装置，用于将控制信号分流到各个开关装置以防止其激活， 相应的相对开关装置是导电的。

公开(公告)号：US4725916A

公开(公告)日：1988-02-16

申请号：US850676

申请日：1986-04-11

申请人： Keiichi Oshikiri

发明人： Keiichi Oshikiri

IPC分类号： H02H3/08 ,  H02H3/02 ,  H02H7/122 ,  H02H7/26

CPC分类号： H02H3/025 ,  H02H7/122 ,  Y10T307/391 ,  Y10T307/469 ,  Y10T307/615

摘要： A short-circuit protective circuit for uninterruptible power supply equipment of the type in which in a short-circuit at a branch feeder in a load part, a bypass thyristor switch is operated to connect in a moment directly to a commercial power supply and kept at ON for a short time while an inverter circuit remains operating, and consequently a short-circuit fuse attached to said branch feeder is blown due to energy from the bypass-circuit power supply, and thus power supply to the load continues.According to the invention, in an accident of short-circuit at the load part, the load is connected temporarily to the bypass circuit, and supplied with power through both the inverter circuit and the bypass circuit to rapidly blow the fuse in a short time, and then power supply through only the inverter circuit to the load returns.

摘要翻译： 一种用于不间断电源设备的短路保护电路，其中在负载部分中的分支馈线短路时，旁路晶闸管开关被操作以直接连接到商用电源并保持在 在逆变器电路保持工作时短时间ON，因此由于来自旁路电路电源的能量，连接到所述分支馈线的短路保险丝熔断，因此继续向负载供电。 根据本发明，在负载部分的短路事故中，负载临时连接到旁路电路，并且通过逆变器电路和旁路电路通过电力提供电力，以在短时间内快速熔断保险丝， 然后电源通过只有逆变器电路才能返回负载。