公开(公告)号：EP2190114A4

公开(公告)日：2012-05-09

申请号：EP08830079

申请日：2008-09-03

Applicant: TOA CORP

Inventor： KAWAI YUMA ,  KAWAGUCHI KOJI

IPC: H03F3/20 ,  H03F1/52 ,  H04R3/00 ,  H04R3/12

CPC classification number: H03F3/085 ,  H03F1/52 ,  H03F3/181 ,  H03F3/20 ,  H03F2200/03 ,  H04R3/12

公开(公告)号：JP2009043812A

公开(公告)日：2009-02-26

申请号：JP2007205224

申请日：2007-08-07

Applicant: Toa Corp ,  ティーオーエー株式会社

Inventor： KAWAI YUMA

IPC: H01L23/40

CPC classification number: H01L2924/0002 ,  H01L2924/00

Abstract: PROBLEM TO BE SOLVED: To enable reduction of a height dimension and no influence on characteristics even when a semiconductor element handles a high frequency signal. SOLUTION: A lead inserting hole 22 is formed in a printed circuit board 2, and one end of a lead 14 of a semiconductor element 10 is inserted into the lead inserting hole 22. The lead 14 is introduced into a main body 12 to linearly extend obliquely to the board 2. A heat sink 16 has a contact 18 contacted with the main body 12, and the contact 18 is oblique to the board 2. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：即使半导体元件处理高频信号，也能够降低高度尺寸并且不影响特性。 解决方案：引线插入孔22形成在印刷电路板2中，半导体元件10的引线14的一端插入引线插入孔22中。引线14被引入主体12中 与板2倾斜线性延伸。散热器16具有与主体12接触的触点18，触点18与板2倾斜。版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2002308338A

公开(公告)日：2002-10-23

申请号：JP2001119403

申请日：2001-04-18

Applicant: TOA CORP

Inventor： KAWAI YUMA

IPC: B65D85/68 ,  B65D77/26 ,  B65D81/113

Abstract: PROBLEM TO BE SOLVED: To provide a packing tool which can be easily assembled or disassembled. SOLUTION: Square first and second flat plate parts 42 and 44 are foldable so as to hold a substantially flat article between the two, and first and second engaging means engaged with each other are provided on outer edge parts of the flat plate parts 42 and 44 in the first and second flat plate parts 42 and 44. The first engaging means has a recess 54 and a tongue piece 56 provided therein, and the second engaging means has a recess 58 formed in the outer edge part of the flat plate part 44 and a second tongue piece 60 provided therein.

公开(公告)号：JP2010051148A

公开(公告)日：2010-03-04

申请号：JP2008215226

申请日：2008-08-25

Applicant: Toa Corp ,  ティーオーエー株式会社

Inventor： KAWAI YUMA

IPC: H02M3/28 ,  H02H9/02

Abstract: PROBLEM TO BE SOLVED: To provide a power supply unit with an inrush current prevention function, capable of always ensuring proper start regardless of a load state.
SOLUTION: A switching power supply unit 10 is provided with a resistor 16 for inrush current limit to prevent an inflow of inrush current during starting. When a voltage V4 across an electrolytic capacitor 82 in a working drive power circuit 62 is a predetermined value Vr or more after starting, a switch 20a of a relay 20 is turned on. However, when a load with a large capacity is under such a state as to be connected to an output terminal 54 in starting, a large current passes through a load from the output terminal 54 and a large voltage drop occurs through the resistor 16 for inrush current limit, so that a monitor voltage V4 may not reach the predetermined value Vr or more. To solve such a disadvantage, a no-load state is forcibly generated during starting. A mute control circuit 88 is one of components for the purpose.
COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：为了提供具有浪涌电流防止功能的电源单元，无论负载状态如何，都能始终确保正确启动。 解决方案：开关电源单元10设置有用于浪涌电流限制的电阻器16，以防止启动期间浪涌电流的流入。 当工作驱动电力电路62中的电解电容器82之间的电压V4在启动后为预定值Vr以上时，继电器20的开关20a导通。 然而，当具有大容量的负载处于启动时连接到输出端子54的状态时，大电流从输出端子54通过负载，并且通过电阻器16发生大的电压降以用于涌入 电流限制，使得监视电压V4可能不达到预定值Vr或更大。 为了解决这样的缺点，在起动时强制产生空载状态。 静音控制电路88是用于该目的的组件之一。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2005168094A

公开(公告)日：2005-06-23

申请号：JP2003399962

申请日：2003-11-28

Applicant: Toa Corp ,  ティーオーエー株式会社

Inventor： KAWAI YUMA

IPC: H02M3/28 ,  H02M7/48

Abstract: PROBLEM TO BE SOLVED: To improve the power factor of a power circuit using parallel resonance. SOLUTION: FETs 6a and 6b switch on or switch off the DC voltage of a DC power source 2, according to control signals. The junction between the FETs 6a and 6b is provided with a series resonance means composed of a self inductance of a transformer 10, an inductance element 18, and a capacitor 20. A parallel resonance circuit is made of capacitances between the sources and the drains of FETs 6a and 6b and the leakage inductance of the transformer 10. The FETs 6a and 6b are switched on or switched off by a drive circuit 8. The FET 6b is supplied with a control signal so as to switch off the FET6a after a current flowing to the FET6a being ON becomes zero by the termination of the series resonance of the series circuit and to switch on the FET6b being OFF before the voltage between the source and the drain of the FET6b being OFF becomes zero besides being in a state of changing by the parallel resonance circuit. COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：提高使用并联谐振的电源电路的功率因数。 解决方案：FET 6a和6b根据控制信号来接通或断开直流电源2的直流电压。 FET 6a和6b之间的结点设置有由变压器10的自感，电感元件18和电容器20组成的串联谐振装置。并联谐振电路由电源和漏极之间的电容构成 FET 6a和6b以及变压器10的漏电感。FET6a和6b由驱动电路8接通或切断。FET6b被供给控制信号，以在电流流动之后关断FET6a 通过串联电路的串联谐振的终止使FET6a为ON，并且在FET6b的源极和漏极之间的电压为OFF之前，将FET6b导通至截止状态，而且除了处于改变状态之外 并联谐振电路。 版权所有（C）2005，JPO＆NCIPI

公开(公告)号：JP2010093887A

公开(公告)日：2010-04-22

申请号：JP2008259365

申请日：2008-10-06

Applicant: Toa Corp ,  ティーオーエー株式会社

Inventor： KAWAI YUMA

IPC: H02M7/06 ,  H02M3/28

Abstract: PROBLEM TO BE SOLVED: To reliably prevent one of a pair of smoothing capacitors from failing due to excess of a breakdown voltage when the other malfunctions, in a power supply supporting worldwide input, especially, when alternating-current supply voltage is 200 V.
SOLUTION: In a switching power supply 10, a diode bridge rectification circuit 20 functions as a voltage-doubler rectification circuit when commercial alternating-current voltage Vi as alternating-current supply voltage is 100 V and as a full-wave rectification circuit when it is 200 V. If either of a pair of smoothing electrolytic capacitors 28 and 30 is short-circuited, the switch 22a of a relay 22 is turned on in response thereto. Overcurrent flows through a rush current limiting resistor 18 and the rush current limiting resistor 18 is fused. As a result, the entire switching power supply 10, including the pair of electrolytic capacitors 28 and 30, is protected.
COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：在支持全球输入的电源中，特别是当交流电源电压为200时，为了可靠地防止一对平滑电容器中的一个由于过剩的击穿电压而发生故障 V.解决方案：在开关电源10中，当作为交流电源电压的商业交流电压Vi为100V时，二极管桥式整流电路20用作倍压整流电路，作为全波 整流电路为200V。如果一对平滑电解电容器28,30中的任一个短路，则继电器22的开关22a响应于此而导通。 过流电流流过冲击电流限制电阻器18并且冲击电流限制电阻器18被熔断。 结果，包括一对电解电容器28和30的整个开关电源10被保护。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2007060849A

公开(公告)日：2007-03-08

申请号：JP2005245459

申请日：2005-08-26

Applicant: Toa Corp ,  ティーオーエー株式会社

Inventor： KAWAI YUMA

IPC: H02M7/5387 ,  H03F3/217

Abstract: PROBLEM TO BE SOLVED: To prevent a through current from flowing under transient state immediately after turn on power. SOLUTION: A class D output stage 2 comprises MOSFETs 4 and 6 connected in half-bridge. A buffer 14 supplies a drive voltage to the gate of the MOSFET 4 and 6. The voltage increases transiently in response to closing of a power switch 20, and a DC power supply circuit 8 supplies that voltage as an operation voltage to the buffer 14. When the voltage increases, a transistor 22 blocks drive voltage supply to the gate of the MOSFET 6 until that voltage reaches a threshold. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：为了防止直流电流在接通电源后立即在瞬态下流动。 解决方案：D类输出级2包括以半桥连接的MOSFET 4和6。 缓冲器14向MOSFET4和6的栅极提供驱动电压。响应于电源开关20的闭合，电压瞬时增加，并且直流电源电路8将该电压作为工作电压提供给缓冲器14。 当电压升高时，晶体管22阻断向MOSFET6的栅极的驱动电压供应，直到该电压达到阈值。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2009267615A

公开(公告)日：2009-11-12

申请号：JP2008112695

申请日：2008-04-23

Applicant: Toa Corp ,  ティーオーエー株式会社

Inventor： CHINO HARUKA ,  KAWAI YUMA ,  KAWAGUCHI KOJI

IPC: H03F1/52

Abstract: PROBLEM TO BE SOLVED: To provide an amplifier for audio, wherein over-current is prevented by detecting a decrease in impedance of a load and its erroneous detection is prevented.
SOLUTION: An input audio signal is amplified by amplifiers 11 and 12 and sent out as an audio amplified signal to an output transformer 3. A current detector 13 and a voltage detector 14 detect the current and voltage of the audio amplified signal, and an over-current protection circuit 15a controls the amplification factor of the amplifier 11 based upon differences of the current and voltage to prevent an over-current from being caused by the decrease in impedance of the load. Further, low-pass filters 23i and 23v corresponding to characteristics of the output transformer 3 are provided in the over-current protection circuit 15a to attenuate frequency components of frequency close to the high cutoff frequency of the output transformer 3, thereby preventing the erroneous detection.
COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：提供一种用于音频的放大器，其中通过检测负载的阻抗的降低来防止过电流，并且防止其错误的检测。 输入音频信号由放大器11和12放大，并作为音频放大信号发送到输出变压器3.电流检测器13和电压检测器14检测音频放大信号的电流和电压， 并且过电流保护电路15a基于电流和电压的差异来控制放大器11的放大系数，以防止由负载的阻抗的降低引起的过电流。 此外，在过电流保护电路15a中设置与输出变压器3的特性对应的低通滤波器23i，23v，以衰减接近输出变压器3的高截止频率的频率的分量，从而防止错误的检测 。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2009071582A

公开(公告)日：2009-04-02

申请号：JP2007237837

申请日：2007-09-13

Applicant: Toa Corp ,  ティーオーエー株式会社

Inventor： KAWAI YUMA ,  KAWAGUCHI KOJI

IPC: H03F3/20 ,  H04R3/00

CPC classification number: H03F3/085 ,  H03F1/52 ,  H03F3/181 ,  H03F3/20 ,  H03F2200/03 ,  H04R3/12

Abstract: PROBLEM TO BE SOLVED: To downsize a power amplifier with maintenance of insulation between a transmission line and a ground potential. SOLUTION: Two terminals 2a and 2b of an audio signal source 2 are connected to an input side of an insulation input circuit 6, an audio signal generated in a state insulated from the input side in two terminals 6a and 6b of an output side is inputted to a power amplifying stage 12, and the signal is amplified to be outputted with high voltage to a plurality of speakers 22 from two output terminals 12c and 12d without using an insulation transformer. An operation power is supplied to the power amplifying stage 12 from power terminals 20c and 20d of a direct current power source 14. A terminal 6d on one end of the insulation input circuit 6, one output terminal 12d of the power amplifying stage 12, and one power source terminal 20d of the direct current power source 14 are connected with each other to be made a common potential point different from the ground potential. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：通过维护传输线和地电位之间的绝缘来减小功率放大器的尺寸。 解决方案：音频信号源2的两个端子2a和2b连接到绝缘输入电路6的输入侧，在输出端的两个端子6a和6b中与输入侧绝缘的状态下产生的音频信号 侧被输入到功率放大级12，并且信号被放大以便从两个输出端子12c和12d以高电压输出到多个扬声器22，而不使用绝缘变压器。 从直流电源14的电源端子20c，20d向功率放大级12提供动作电力。绝缘输入电路6的一端的端子6d，功率放大级12的一个输出端子12d，以及 直流电源14的一个电源端子20d彼此连接成为与地电位不同的公共电位点。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2007060850A

公开(公告)日：2007-03-08

申请号：JP2005245460

申请日：2005-08-26

Applicant: Toa Corp ,  ティーオーエー株式会社

Inventor： KAWAI YUMA

IPC: H02M7/537 ,  H02M1/08

Abstract: PROBLEM TO BE SOLVED: To prevent a through current from flowing under transient state. SOLUTION: An oscillation signal is supplied from an oscillation circuit 62 to a pulse transformer 60, and first and second output signals of reverse phase are generated on two output sides 26 and 56. Based on the first and second output signals, a dead time generation circuit 28 generates first and second control signals having a dead time between. MOSFETs 4 and 6 are conducted alternately by the first and second control signals at an interval of the dead time. At the time of starting, a frequency alteration circuit comprising resistors 90, 92, a transistor 94, and a charging circuit 96 lowers the frequency of oscillation signal from the oscillation circuit 62. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：防止直流在瞬态下流动。 解决方案：将振荡信号从振荡电路62提供给脉冲变压器60，并且在两个输出侧26和56上产生反向相位的第一和第二输出信号。基于第一和第二输出信号，a 死区时间产生电路28产生第一和第二控制信号，其间具有死区时间。 MOSFET 4和6以死区间隔交替地由第一和第二控制信号传导。 在启动时，包括电阻90,92，晶体管94和充电电路96的频率变换电路降低来自振荡电路62的振荡信号的频率。（C）2007，JPO＆INPIT