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1. 发明专利

JPH11155232A SURGE PROTECTION DEVICE 失效
公开(公告)号：JPH11155232A
公开(公告)日：1999-06-08
申请号：JP33789397
申请日：1997-11-21
申请人： KK SOC
发明人： ARIKAWA HIROO , MARUO MASAYA
IPC分类号： H02H9/04
摘要： PROBLEM TO BE SOLVED: To prevent a load circuit against a large surge voltage by connecting a protection device, in which an internal resistance becomes very large momen tarily to the load circuit in series if an acute surge is impressed. SOLUTION: The drain of a depletion type N-type MOS 1 is connected to a positive terminal A of a power supply, and its source to a load circuit and its gate to a resistor 2 and a capacitor 3. Then, the other terminal of the resistor 2 which is not connected to the gate of the MOS 1 is connected to the source, and the other terminal of the capacitor 3 which is not connected to the gate of the MOS 1 is connected to the anode of a diode 4. Furthermore, the cathode of the diode 4 is connected to the ground terminal B of the power supply, and the other terminal of the load circuit which is not connected to the source of the MOS 1 is connected to the ground terminal B of the power supply.

2. 发明专利

JPH11177325A PORTABLE TELEPHONE ANTENNA 失效
公开(公告)号：JPH11177325A
公开(公告)日：1999-07-02
申请号：JP36179097
申请日：1997-12-10
申请人： APEX KK SOC
发明人： SHOJI FUMITAKA
IPC分类号： H01Q1/08 , H01Q1/10 , H01Q1/12 , H01Q1/24 , H04M1/02
摘要： PROBLEM TO BE SOLVED: To provide a portable antenna which can be set in a state of being optimum to receive the radio waves in both its working and standby modes and also can be stored in a small space in a state where the radio waves can be received with high sensitivity. SOLUTION: A portable telephone antenna 1 comprises antenna attachment metal fittings which is screwed and fixed to a screw-shaped antenna installing part that is connected to the feeding part of a portable telephone set 2, a connecting metal fittings 5 whose tip part to be installed to the antenna installing metal fittings can be folded, and a retractable antenna body 6 which can be folded and installed to the fittings 5.

3. 发明专利

JPH11113159A SEMICONDUCTOR PROTECTION DEVICE 失效
公开(公告)号：JPH11113159A
公开(公告)日：1999-04-23
申请号：JP28258897
申请日：1997-09-30
申请人： KK SOC
发明人： ARIKAWA HIROO , MARUO MASAYA
IPC分类号： H02H3/08 , H02H7/20 , H03F1/52
摘要： PROBLEM TO BE SOLVED: To obtain a protection device which can make the gate voltage of a power MOS to rise and fall by means of an ordinary gate drive circuit, without allowing a large gate current to temporarily flow to the source of the power MOS through an enhancement MOS connected between the gate and the source, when the gate voltage is made to rise and to fall. SOLUTION: A depression MOS 5 is connected in series with an enhancement MOS 2 between the gate and the source of a power MOS 1, and the gate of the enhancement MOS 2 is connected to the drain of the power MOS 1 through a resistor and diodes 4 and 9 and to the source of the MOS 1 through a capacitor 10. Then the gate of the depression MOS 5 is connected to the gate of the power MOS 1 through a resistor and to the source of the power MOS 1 through a capacitor 7.

4. 发明专利

JP2002319345A SURFACE-MOUNTED SMALL FUSE 审中-公开
公开(公告)号：JP2002319345A
公开(公告)日：2002-10-31
申请号：JP2001370902
申请日：2001-12-05
申请人： KK SOC
发明人： ARIKAWA HIROO , ISHIMURA TAKASHI , NORISUE SEIJI
IPC分类号： H01H85/00 , H01H85/041 , H01H85/042 , H01H85/05 , H01H85/06 , H01H85/08 , H01H85/143 , H01H85/157 , H01H85/17 , H01H85/175 , H01H85/18
摘要： PROBLEM TO BE SOLVED: To provide a surface-mounted small fuse having a stable fusion characteristic and a strong time lag property, easy to manufacture and capable of providing a certain fusing time. SOLUTION: The body of this fuse has a rectangular ceramic split structure. A fuse element 60 (Ag:Cu:Zn:Sn=>;50%:>;20%:>;17%:>;5% (weight ratio)) wound around a ceramic rod 58 (Al2 O3 :MgO:BeO=>;96%:>;3%:

5. 发明专利

JP2000232726A OVERCURRENT PROTECTIVE CIRCUIT 失效
公开(公告)号：JP2000232726A
公开(公告)日：2000-08-22
申请号：JP3269799
申请日：1999-02-10
申请人： KK SOC
发明人： ARIKAWA HIROO , MARUO MASAYA
IPC分类号： H02H3/08 , H02H3/087 , H02H7/20
摘要： PROBLEM TO BE SOLVED: To make it possible to cope both with quick-acting type and with delayed type according to interrupting characteristic by detecting any overcurrent through a detection adjustment circuit connected between the drain and the gate of a p-type EMOS series-connected with a load and interrupting the p-type EMOS. SOLUTION: N- and p-type DMOSs 14 and 15 in a gate current control circuit 2 have their sources connected with each other so that voltage drop in one of them becomes equal to the gate voltage of the other, and their respective gates are connected with the other's drain through resistors 24 and 25. The drain of the n-type DMOS 14 is connected with a node 43, and the drain of the p-type DMOS 15 is connected with the source of a p-type DMOS 16. If p-type EMOSs 11 and 12 are brought into conduction by overcurrent in a load 7, the constant-current state maintained by resistors 27 and 23 and the p-type DMOS 16 be comes unstable, and a large current flows to the gate current control circuit 2 through the resistor 23. However, the n-type and p-type DMOSs 14 and 15 have their gate voltage increased to above a threshold voltage and are brought out of conduction to interrupt the current flowing to the gate current control circuit 2.

6. 发明专利

JP2002231123A FUSE 失效
公开(公告)号：JP2002231123A
公开(公告)日：2002-08-16
申请号：JP2001018313
申请日：2001-01-26
申请人： KK SOC
发明人： ARIKAWA HIROO , ISHIMURA TAKASHI
IPC分类号： H01H85/18 , H01H85/045 , H01H85/08 , H01H85/157 , H01H85/175 , H01H85/38
摘要： PROBLEM TO BE SOLVED: To provide a small sized fuse with large interrupt capacity usable to protect a battery unit used for electric vehicles or hybrid vehicles and capable of withstanding repeated energization and vibration. SOLUTION: The intermediate part of a solid wire or a strand type fuse- element is wound on a tubular support body formed with an insulating material containing 60 w% or more SiO2 and 26 w% or more Al2O3, NaO, K2O, and CaO to destruct the support body when the fuse interrupts a large current so as to increase an interrupt capacity.

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