公开(公告)号：US10573457B2

公开(公告)日：2020-02-25

申请号：US14883855

申请日：2015-10-15

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Jing Wang ,  Quinn Kneller ,  Scott Parish

IPC: H01F5/00 ,  H01L27/08 ,  H01F41/04 ,  H01F27/28 ,  H01F19/06 ,  H02M3/335 ,  H02M3/337 ,  H02M1/00

Abstract: An embedded transformer device includes first, second, and auxiliary windings, defined in an insulating substrate by conductive vias joined together by conductive traces. The positions of the conductive vias are arranged to optimize the isolation properties of the transformer and to reduce the coupling of the transformer by increasing the leakage inductance. The embedded transformer device provides better isolation between input side and output side windings, and allows an oscillating LC circuit to be set up in the case of a short circuit, preventing high power from extending between the input and output terminals and thereby avoiding damage to the connected electrical components.

公开(公告)号：US5923237A

公开(公告)日：1999-07-13

申请号：US74322

申请日：1998-05-07

Applicant: Kouki Sato ,  Katsumi Saito

Inventor： Kouki Sato ,  Katsumi Saito

IPC: H01F27/06 ,  H01F19/06 ,  H01F27/29 ,  H03H7/42 ,  H01F27/24

CPC classification number: H03H7/42

Abstract: A wirewound balun transformer for planar packaging comprising a flanged core which has end flanges at both ends, at least one center flange, and two or more winding recesses, a flat core held in parallel with the flanged core, and windings coiled around the winding recesses, characterized in that one side face of the center flange is not flush with but is formed behind the plane that connects one side faces on the same side of the end flanges, each of the end flanges of the flanged core has an opposing pair of electrodes formed on both side faces, and the center flange has a single electrode formed on the opposite side face.

Abstract translation: 一种用于平面包装的线绕平衡 - 不平衡变压器，包括：法兰芯，其两端具有端部凸缘;至少一个中心凸缘;以及两个或多个绕组凹槽;扁平芯体与所述带凸缘的芯体平行的绕组， 其特征在于，所述中心凸缘的一个侧面与所述端部凸缘的同一侧上的一个侧面连接的所述平面后方不形成，所述法兰芯的每个所述端部凸缘具有相对的一对电极 形成在两个侧面上，并且中心凸缘具有形成在相对侧面上的单个电极。

公开(公告)号：US5473300A

公开(公告)日：1995-12-05

申请号：US949850

申请日：1992-11-19

Applicant: Michael B. Watson

Inventor： Michael B. Watson

IPC: H01F19/06 ,  H01F17/06 ,  H01F27/28 ,  H01F30/10 ,  H01F38/14

CPC classification number: H01F38/14 ,  H01F30/10

Abstract: A cable coupling trandformer having a metal or ferrite member defining separate high permeability portions of a pair of flux paths, a winding electromagnetically associated with each high permeability portion, and a common low permeability portion of each flux path which passes between a pair of conductors carrying equal currents in antiphase. A portion of the current induced in either the conductors or the windings are impressed on the other to create a simple communications device.

Abstract translation: PCT No.PCT / GB91 / 00459 Sec。 371日期：1992年11月19日 102（e）1992年11月19日PCT PCT 1991年3月27日PCT公布。 出版物WO91 / 15022 日本1991年10月3日。一种电缆耦合器，其具有限定一对磁通路径的单独的高磁导率部分的金属或铁氧体部件，与每个高磁导率部分电磁相关的绕组和每个磁通路径的公共低磁导率部分， 在一对导体之间穿过相反的电流。 在导体或绕组中感应的电流的一部分被印在另一个上以产生简单的通信装置。

公开(公告)号：US4862129A

公开(公告)日：1989-08-29

申请号：US188247

申请日：1988-04-29

Applicant: Waseem A. Roshen ,  David E. Turcotte ,  Dale F. Regelman

Inventor： Waseem A. Roshen ,  David E. Turcotte ,  Dale F. Regelman

IPC: H01F27/30 ,  H01F19/06 ,  H01F27/28 ,  H01F30/00

CPC classification number: H01F19/06

Abstract: A low-profile, high-frequency power transformer is comprised of a plurality of insulated ferrite slabs formed in a stacked array. In one embodiment a pair of slots are defined through the stacked array of insulated slabs. A single-turn metallic ribbon conductor is then looped through each pair of slots to form a corresponding first and second loop which are coupled in a magnetic flux circuit with each other through the stack. The distance separating one pair of slots is unequal to the distance separating the other pair of slots so that the loops formed by the ribbons have a corresponding unequal cross section. Hence the ratio of the voltages on the ribbons is proportional to the ratio of the respective cross-sectional areas of the ribbon loops. In another embodiment, a third ribbon is added having a cross-sectional loop area equivalent to the second ribbon to provide symmetrical, single-turn output coils.

公开(公告)号：US4777465A

公开(公告)日：1988-10-11

申请号：US882071

申请日：1986-07-02

Applicant: Walter B. Meinel

Inventor： Walter B. Meinel

IPC: H01F19/06 ,  H01F17/00 ,  H01F17/06 ,  H01F27/28 ,  H01F30/16 ,  H01G4/012 ,  H01G4/38 ,  H01L23/64 ,  H01L25/16 ,  H05K1/03 ,  H05K1/16 ,  H01F15/02 ,  H01F27/30

CPC classification number: H01G4/012 ,  H01F17/0033 ,  H01F17/062 ,  H01F27/2804 ,  H01F30/16 ,  H01G4/38 ,  H01L23/642 ,  H01L25/165 ,  H05K1/162 ,  H01F2027/2814 ,  H01L2224/49175 ,  H01L24/49 ,  H01L2924/00014 ,  H01L2924/01014 ,  H01L2924/01019 ,  H01L2924/01057 ,  H01L2924/01063 ,  H01L2924/01068 ,  H01L2924/01079 ,  H01L2924/14 ,  H01L2924/19107 ,  H01L2924/30107 ,  H01L2924/3011 ,  H05K1/0306 ,  H05K2201/09236 ,  H05K2201/10946 ,  Y10T29/4902 ,  Y10T29/49073

Abstract: A square toroid transformer is assembled on a ceramic hybrid integrated circuit substrate. The primary and secondary windings of the transformer are provided on opposite arms of a square toroid ferrite core by providing first and second groups of spaced, parallel metal conductors on the surface of the ceramic substrate and adherent thereto, and an insulative layer over the first and second groups of conductors, leaving their respective end portions exposed. The square toroid ferrite core, coated with dielectric material, is attached to the insulative layer. Wire bonds in planes perpendicular to the longitudinal axes of the opposite arms each are wire bonded, respectively, to an inner end of one of the metal conductors and an outer end of an adjacent one. A large number of turns for both the primary winding and the secondary winding are achieved, resulting in high primary and secondary winding and inductances, while maintaining a uniform separation and high breakdown voltage between the primary and secondary wirings.

Abstract translation: 方形环形变压器组装在陶瓷混合集成电路基板上。 变压器的初级和次级绕组通过在陶瓷衬底的表面上提供第一和第二组相互平行的间隔开的金属导体并与之粘合在一起，在方形环形铁氧体磁芯的相对臂上设置绝缘层， 第二组导体，使它们各自的端部露出。 将绝缘材料涂覆的方形环形铁氧体磁心附着在绝缘层上。 垂直于相对臂的纵轴的平面中的线接合部分别分别连接到金属导体中的一个的内端和相邻的一个的外端。 实现了初级绕组和次级绕组的大量匝数，从而导致高次级绕组和电感，同时保持初级和次级绕组之间的均匀分离和高的击穿电压。

公开(公告)号：US3348181A

公开(公告)日：1967-10-17

申请号：US45098065

申请日：1965-04-26

Applicant: SANDERS ASSOCIATES INC

Inventor： CHESTER STROMSWOLD

IPC: H01F19/06 ,  H01F38/18

CPC classification number: H01F38/18 ,  H01F19/06

公开(公告)号：US2477074A

公开(公告)日：1949-07-26

申请号：US6674148

申请日：1948-12-22

Applicant: MCINTOSH FRANK H

Inventor： MCINTOSH FRANK H

IPC: H01F19/06 ,  H03F3/22 ,  H03F3/28 ,  H03F3/32 ,  H03F3/52

CPC classification number: H01F19/06 ,  H03F3/22 ,  H03F3/28 ,  H03F3/52

公开(公告)号：US2174235A

公开(公告)日：1939-09-26

申请号：US20192338

申请日：1938-04-14

Applicant: HAZELTINE CORP

Inventor： MADISON CAWEIN

IPC: H01F19/06

CPC classification number: H01F19/06

公开(公告)号：US2125119A

公开(公告)日：1938-07-26

申请号：US8305736

申请日：1936-06-02

Applicant: GEN ELECTRIC

Inventor： LYMAN HAROLD T

IPC: H01F19/06

CPC classification number: H01F19/06

公开(公告)号：US20050116787A1

公开(公告)日：2005-06-02

申请号：US10994606

申请日：2004-11-23

Applicant: Shoichi Ohi ,  Hideya Matsubara ,  Naoto Ohyama

Inventor： Shoichi Ohi ,  Hideya Matsubara ,  Naoto Ohyama

IPC: H01F19/06 ,  H01F27/00 ,  H03H7/42

CPC classification number: H03H7/42 ,  H03H2001/0085

Abstract: A balun comprises an unbalanced terminal, two balanced terminals, and two ground terminals. The balun further comprises: a low-pass filter provided between the unbalanced terminal and one of the balanced terminals; and a high-pass filter provided between the unbalanced terminal and the other of the balanced terminals. The low-pass filter incorporates two coils and a capacitor. The high-pass filter incorporates two capacitors and a coil. The coils and the capacitors are made up of conductor layers of a multi-layer substrate.

Abstract translation: 平衡 - 不平衡转换器包括不平衡端子，两个平衡端子和两个接地端子。 平衡不平衡变换器还包括：设置在不平衡端子和平衡端子之一之间的低通滤波器; 以及设置在所述不平衡端子和所述平衡端子中的另一端之间的高通滤波器。 低通滤波器包含两个线圈和一个电容器。 高通滤波器包含两个电容器和一个线圈。 线圈和电容器由多层基板的导体层构成。