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238 条记录 (耗时 0.031 秒)

    LEAKAGE TRANSFORMER
    1.
    发明申请
    LEAKAGE TRANSFORMER 有权

    公开(公告)号：US20220189687A1

    公开(公告)日：2022-06-16

    申请号：US17441437

    申请日：2020-03-13

    申请人： Panasonic Intellectual Property Management Co., Ltd.

    发明人： Junichi KOTANI ,  Osamu MORIYA ,  Hisayoshi KATO ,  Toshiyuki ASAHI

    IPC分类号： H01F38/08 ,  H01F27/26 ,  H01F27/28

    摘要： A leakage transformer includes a core and a printed wiring board. The core includes a first magnetic leg and a second magnetic leg. The second magnetic leg is spaced from the first magnetic leg. The printed wiring board includes an insulating portion and conductor wiring. The conductor wiring includes a first coil and a second coil. The first coil is formed of a first winding and is wound around only the first magnetic leg, not around the second magnetic leg. The second coil is formed of a second winding and includes a first part and a second part. The first part is wound around only the first magnetic leg, not around the second magnetic leg. The second part is wound around both the first and second magnetic legs.

    COMMON MODE INDUCTOR WITH DUAL LEAKAGE PATHS
    2.
    发明申请
    COMMON MODE INDUCTOR WITH DUAL LEAKAGE PATHS 审中-公开

    公开(公告)号：US20200381173A1

    公开(公告)日：2020-12-03

    申请号：US15930527

    申请日：2020-05-13

    申请人： UNIVERSAL LIGHTING TECHNOLOGIES, INC.

    发明人： Dane Sutherland ,  Donald Folker ,  Wei Xiong

    IPC分类号： H01F27/32 ,  H01F17/04 ,  H01F27/30 ,  H01F27/26 ,  H01F38/08 ,  H01F27/06 ,  H01F27/33

    摘要： A common mode inductor includes a bobbin with two windings. A first winding is positioned between a first end flange and a first offset flange. A second winding is positioned between a second end flange and a second offset flange. The windings are spaced apart by a center section without windings. A pair of E-cores, each having a pair of outer legs and a center leg, are positioned in a passageway of the bobbin such that the center leg of each E-core is surrounded by a respective one of the two windings. First and second I-bars are positioned in the center section of the bobbin between the two offset flanges. The two I-bars are positioned on opposite sides of the passageway. The two I-bars increase leakage inductance between the two windings to improve the suppression of electromagnetic interference caused by common mode noise in the two windings.

    Resonant transformer with adjustable leakage inductance
    3.
    发明授权
    Resonant transformer with adjustable leakage inductance 有权

    公开(公告)号：US10529483B2

    公开(公告)日：2020-01-07

    申请号：US15497272

    申请日：2017-04-26

    申请人： YUJING TECHNOLOGY CO., LTD.

    发明人： Sen-Tai Yang

    IPC分类号： H01F27/30 ,  H01F38/08 ,  H01F27/32 ,  H01F38/10 ,  H01F13/00 ,  H01F27/245

    摘要： A resonant transformer with adjustable leakage inductance includes a secondary winding group, a primary winding group, a magnetic sheet and a core group. The primary winding group is provided on a bobbin of the secondary winding group, and the magnetic sheet is provided in the bobbin. The secondary winding group, the primary winding group and the magnetic sheet include a first through hole, a second through hole and a through hole, respectively. The core group includes a first core and a second core symmetrically disposed, which are disposed on top of and at the bottom of the primary winding group, respectively. During operation of the resonant transformer, the degree of coupling between the primary and secondary sides can be changed using the magnetic sheet. This allows the native leakage inductance to be altered to satisfy demands for various different resonant frequencies.

    Method and apparatus for providing auxiliary and welding type power with thermal protection
    4.
    发明授权
    Method and apparatus for providing auxiliary and welding type power with thermal protection 有权

    公开(公告)号：US10406623B2

    公开(公告)日：2019-09-10

    申请号：US14535773

    申请日：2014-11-07

    申请人： Illinois Tool Works Inc.

    发明人： Brian A. Schwartz ,  Quinn W. Schartner

    IPC分类号： B23K9/10 ,  H05K7/20 ,  H01F27/40 ,  H01F38/08

    摘要： A method and apparatus for providing welding-type power supply includes a power circuit and a controller. The power circuit receives input power and provides welding type power and auxiliary power. It is controlled on a control input. The power circuit also includes an auxiliary power transformer. A temperature responsive component is mounted in the auxiliary power transformer and provides a temperature signal indicative of the temperature in the auxiliary power transformer. The controller controls a cooling fan for the aux power transformer and/or turns off the aux power output in response to the sensed temperature.

    Transformer
    7.
    发明申请
    Transformer 审中-公开
    变压器

    公开(公告)号：US20050219029A1

    公开(公告)日：2005-10-06

    申请号：US11092464

    申请日：2005-03-29

    申请人： Osamu Watanabe ,  Junji Kondo

    发明人： Osamu Watanabe ,  Junji Kondo

    IPC分类号： H01F27/02 ,  H01F27/26 ,  H01F27/30 ,  H01F27/32 ,  H01F30/00 ,  H01F38/08 ,  H05B41/282

    CPC分类号： H01F27/326 ,  H01F27/022 ,  H01F27/266 ,  H05B41/2822

    摘要： There is provided a transformer, which includes a coil bobbin having a wiring drum around which a primary coil and a secondary coil are wound, and terminal bases formed at end portions of the wiring drum. A plurality of terminals are formed on a surface of each terminal base. The transformer further includes insulative resin formed to cover an outer circumferential part of the coil bobbin excepting the plurality of terminals, and at least one core that is attached to the coil bobbin covered with the insulative resin. The wiring drum has a plurality of flanges including a first flange separating the primary and secondary coils, and second flanges formed at the end portions of the wiring drum.

    摘要翻译： 提供了一种变压器，其包括线圈架，该线圈架具有卷绕有初级线圈和次级线圈的布线鼓，以及形成在布线滚筒的端部的端子台。 在每个端子台的表面上形成多个端子。 变压器还包括形成为覆盖除了多个端子之外的线圈架的外周部的绝缘树脂，以及安装在被绝缘树脂覆盖的线圈架上的至少一个芯。 布线鼓具有多个凸缘，该凸缘包括分隔一次线圈和次线圈的第一凸缘，以及形成在布线滚筒的端部处的第二凸缘。

    Inverter circuit for surface light source system
    8.
    发明申请
    Inverter circuit for surface light source system 失效
    面光源系统逆变电路

    公开(公告)号：US20050088113A1

    公开(公告)日：2005-04-28

    申请号：US10968947

    申请日：2004-10-21

    申请人： Masakazu Ushijima ,  Minoru Kijima

    发明人： Masakazu Ushijima ,  Minoru Kijima

    IPC分类号： H05B41/24 ,  H01F38/08 ,  H02M7/493 ,  H05B41/26 ,  H05B41/282 ,  H05B41/16

    CPC分类号： H05B41/2822

    摘要： Disclosed is an inverter circuit for discharge lamps, in which transformers are separated into plural small or middle-sized transformers connected to one another to provide a high-power transformer equivalent to a large transformer. The inverter circuit includes a plurality of leakage flux step-up transformers each having a magnetically continuous central core, a primary winding, and a distributed-constant secondary winding, wherein a part of a resonance circuit is formed among a leakage inductance produced on the secondary winding side, a distributed capacitance of the secondary winding and a parasitic capacitance produced around a discharge lamp close to a proximity conductor, and as the resonance circuit resonates, the secondary winding has a close coupling portion in a vicinity of the primary winding which has a magnetic phase close to that of the primary winding and magnetically close couples with the primary winding and where a large portion of a magnetic flux produced under the primary winding penetrates, and a loose coupling portion distant from said primary winding which has a magnetic phase delayed from that of the primary winding and magnetically loose couples with the primary winding and where a large portion of the magnetic flux produced under the primary winding leaks, whereby a plurality of discharge lamps are lighted in parallel. The invention is the only way to achieve the thickness of 10 mm to 13 mm or less which is demanded in the market at present and realize a high-power transformer of 40 W to 60 W.

    摘要翻译： 公开了一种用于放电灯的逆变器电路，其中变压器被分离成彼此连接的多个小型或中型变压器，以提供等效于大型变压器的大功率变压器。 逆变器电路包括多个具有磁连续中心芯，初级绕组和分布常数次级绕组的漏磁升压变压器，其中在二次侧产生的漏感中形成谐振电路的一部分 绕组侧，次级绕组的分布电容和靠近接近导体的放电灯周围产生的寄生电容，并且当谐振电路谐振时，次级绕组在初级绕组附近具有紧密耦合部分，其具有 磁性相接近于初级绕组和与初级绕组的磁耦合的磁相，并且其中在初级绕组下方产生的大部分磁通穿透，以及远离所述初级绕组的松耦合部分，其具有从 初级绕组和磁性松耦合与初级绕组，其中一个较大的 在初级绕组下产生的磁通量的一部分泄漏，由此多个放电灯并联点亮。 本发明是实现目前市面上要求的10mm〜13mm的厚度的唯一方法，实现了40W〜60W的大功率变压器。

    Switching power supply circuit
    9.
    发明申请
    Switching power supply circuit 失效
    开关电源电路

    公开(公告)号：US20050068792A1

    公开(公告)日：2005-03-31

    申请号：US10952425

    申请日：2004-09-28

    申请人： Masayuki Yasumura

    发明人： Masayuki Yasumura

    IPC分类号： H02M7/21 ,  H01F30/04 ,  H01F38/08 ,  H02M3/28 ,  H02M3/335

    CPC分类号： H01F30/04 ,  H01F38/08 ,  H01F2019/085 ,  H02M3/33569 ,  H02M3/33592 ,  H02M2001/0058 ,  Y02B70/1475 ,  Y02B70/1491

    摘要： A switching power supply circuit is disclosed which can achieve a high power conversion efficiency and besides achieve reduction of the circuit scale and the cost by simplification in circuit configuration. The switching power supply circuit includes a synchronous rectification circuit of the winding voltage detection system on the secondary side of a resonance converter. The coupling coefficient of an insulating converter transformer or the induced voltage level per one turn of the secondary winding is set so that the magnetic flux density of the insulating converter transformer may be lower than a fixed level thereby to maintain the secondary side rectification current in a continuous mode even in a heavy load condition. An inductor is inserted in series in a path along which rectification current is to be supplied to a secondary side smoothing capacitor so that reverse current appearing on the rectification current is suppressed by counter electromotive force generated in the inductor to further reduce the reactive power. A dc superposition characteristic of the inductor is set so that abnormal oscillation in a very light load condition (for example, 12.5 W or less) is prevented.

    摘要翻译： 公开了一种开关电源电路，其可以实现高功率转换效率，并且除了通过电路配置的简化来实现电路规模的降低和成本。 开关电源电路包括在谐振转换器的次级侧上的绕组电压检测系统的同步整流电路。 隔离变换器变压器的耦合系数或次级绕组每匝的感应电压电平被设定为使得隔离变换变压器的磁通密度可能低于固定电平，从而将二次侧整流电流维持在 连续模式即使在重载条件下。 电感器串联插入到整流电流要被提供给二次侧平滑电容器的路径中，从而通过在电感器中产生的反电动势来抑制整流电流中出现的反向电流，从而进一步降低无功功率。 设置电感器的直流叠加特性，以防止在非常轻的负载状态（例如，12.5W或更小）的异常振荡。