Patents by Inventor Lan-Chin Hsieh
Lan-Chin Hsieh has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9251944Abstract: A variable coupled inductor includes a first core, two conducting wires, a second core and a magnetic structure. The first core includes two first protruding portions, a second protruding portion and two grooves, wherein the second protruding portion is located between the two first protruding portions and each of the grooves is located between one of the first protruding portions and the second protruding portion. Each of the conducting wires is disposed in one of the grooves. The second core is disposed on the first core. A first gap is formed between each of the first protruding portions and the second core and a second gap is formed between the second protruding portion and the second core. The magnetic structure is disposed between the second protruding portion and the second core and distributed symmetrically with respect to a centerline of the second protruding portion.Type: GrantFiled: August 16, 2013Date of Patent: February 2, 2016Assignee: CYNTEC Co., LTD.Inventors: Lan-Chin Hsieh, Cheng-Chang Lee, Chih-Hung Chang, Chih-Siang Chuang, Tsung-Chan Wu, Roger Hsieh
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Patent number: 9230728Abstract: A magnetic device includes a T-shaped magnetic core, a wire coil and a magnetic body. The T-shaped magnetic core includes a base and a pillar, and is made of an annealed soft magnetic metal material, a core loss PCL (mW/cm3) of the T-shaped magnetic core satisfying: 0.64×f0.95×Bm2.20?PCL?7.26×f1.41×Bm1.08, where f (kHz) represents a frequency of a magnetic field applied to the T-shaped magnetic core, and Bm (kGauss) represents the operating magnetic flux density of the magnetic field at the frequency. The magnetic body fully covers the pillar, any part of the base that is located above the bottom surface of the base, and any part of the wire coil that is located directly above the top surface of the base.Type: GrantFiled: April 11, 2014Date of Patent: January 5, 2016Assignee: CYNTEC CO., LTD.Inventors: Chun-Tiao Liu, Lan-Chin Hsieh, Tsung-Chan Wu, Chi-Hsun Lee, Chih-Siang Chuang
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Patent number: 9208937Abstract: A choke includes a single-piece core entirely made of a same material, the single-piece core having two boards and a pillar located between the two boards, a winding space being located among the two boards and the pillar, wherein the pillar has a non-circular and non-rectangular cross section along a direction substantially perpendicular to an axial direction of the pillar, the cross section of the pillar has a first axis and a second axis intersecting with each other at a center of the cross section of the pillar and are substantially perpendicular with each other, the first axis is longer than the second axis, and the cross section of the pillar is substantially symmetrical to both of the first axis and the second axis.Type: GrantFiled: December 20, 2011Date of Patent: December 8, 2015Assignee: CYNTEC CO., LTD.Inventors: Tsung-Chan Wu, Roger Hsieh, Yi-Min Huang, Lan-Chin Hsieh, Yu-Ching Kuo
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Publication number: 20150310975Abstract: A choke includes a single-piece core made of a same material, the single-piece core having a first board, a second board, and a pillar located between the first and second boards, a winding space located among the first board, the second board and the pillar, wherein the pillar has a non-circular and non-rectangular cross section having a first axis and a second axis substantially perpendicularly intersecting with each other at a center of the cross section of the pillar, and wherein a circumference of the cross section of the pillar includes two arc edges, four first substantially straight edges substantially parallel to the first axis, and two second substantially straight edges substantially parallel to the second axis, each of the first substantially straight edges being a joint of and in direct contact with one of the arc edges and one of the second substantially straight edges.Type: ApplicationFiled: July 8, 2015Publication date: October 29, 2015Inventors: Tsung-Chan Wu, Roger Hsieh, Yi-Min Huang, Lan-Chin Hsieh, Yu-Ching Kuo, Chia-Hui LAI
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Patent number: 9117580Abstract: A choke includes a single-piece core made of a same material, the single-piece core having a first board, a second board, and a pillar located between the first and second boards, a winding space located among the first board, the second board and the pillar, wherein the pillar has a non-circular and non-rectangular cross section having a first axis and a second axis substantially perpendicularly intersecting with each other at a center of the cross section of the pillar, and wherein a circumference of the cross section of the pillar includes two arc edges, four first substantially straight edges substantially parallel to the first axis, and two second substantially straight edges substantially parallel to the second axis, each of the first substantially straight edges being a joint of and in direct contact with one of the arc edges and one of the second substantially straight edges.Type: GrantFiled: August 5, 2013Date of Patent: August 25, 2015Assignee: CYNTEC CO., LTD.Inventors: Tsung-Chan Wu, Roger Hsieh, Yi-Min Huang, Lan-Chin Hsieh, Yu-Ching Kuo, Chia-Hui Lai
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Publication number: 20150089795Abstract: A method to form a choke is disclosed, wherein the method comprises: encapsulating a hollow coil by a molding body; forming a first core, wherein the first core comprises a pillar; and disposing at least one first portion of the pillar inside the encapsulated hollow coil. The method avoids the overflow or vertical flow issue during a molding process for encapsulating a coil that has been wound on a core already.Type: ApplicationFiled: December 10, 2014Publication date: April 2, 2015Inventors: Lan-Chin Hsieh, Roger Hsieh, Yu-Ching Kuo, Chun-Tiao Liu
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Publication number: 20140218157Abstract: A magnetic device includes a T-shaped magnetic core, a wire coil and a magnetic body. The T-shaped magnetic core includes a base and a pillar, and is made of an annealed soft magnetic metal material, a core loss PCL (mW/cm3) of the T-shaped magnetic core satisfying: 0.64×f0.95×Bm2.20?PCL?7.26×f1.41×Bm1.08, where f (kHz) represents a frequency of a magnetic field applied to the T-shaped magnetic core, and Bm (kGauss) represents the operating magnetic flux density of the magnetic field at the frequency. The magnetic body fully covers the pillar, any part of the base that is located above the bottom surface of the base, and any part of the wire coil that is located directly above the top surface of the base.Type: ApplicationFiled: April 11, 2014Publication date: August 7, 2014Applicant: CYNTEC CO., LTD.Inventors: Chun-Tiao LIU, Lan-Chin HSIEH, Tsung-Chan WU, Chi-Hsun LEE, Chih-Siang CHUANG
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Patent number: 8723629Abstract: A magnetic device includes a T-shaped magnetic core, a wire coil and a magnetic body. The T-shaped magnetic core includes a base and a pillar, and is made of an annealed soft magnetic metal material, a core loss PCL (mW/cm3) of the T-shaped magnetic core satisfying: 0.64×f0.95×Bm2.20?PCL?7.26×f1.41×Bm1.08, where f (kHz) represents a frequency of a magnetic field applied to the T-shaped magnetic core, and Bm (kGauss) represents the operating magnetic flux density of the magnetic field at the frequency. The magnetic body fully covers the pillar, any part of the base that is located above the bottom surface of the base, and any part of the wire coil that is located directly above the top surface of the base.Type: GrantFiled: January 10, 2013Date of Patent: May 13, 2014Assignee: Cyntec Co., Ltd.Inventors: Chun-Tiao Liu, Lan-Chin Hsieh, Tsung-Chan Wu, Chi-Hsun Lee, Chih-Siang Chuang
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Publication number: 20140097931Abstract: An electronic device including a core, at least a wire and a magnetic material is provided. The core includes a pillar, a top board and a bottom board. The pillar is disposed between the top board and the bottom board. An area of the top board is smaller than an area of the bottom board. A winding space is formed among the top board, the bottom board and the pillar. The wire is winded around the pillar and located in the winding space. The magnetic material fills the winding space to encapsulate the wire. The magnetic material includes a resin and a metallic powder, wherein an average particle diameter of the magnetic powder is smaller than 20 ?m.Type: ApplicationFiled: December 11, 2013Publication date: April 10, 2014Applicant: CYNTEC CO., LTD.Inventors: Tsung-Chan Wu, Roger Hsieh, Yi-Min Huang, Lan-Chin Hsieh, Yu-Ching Kuo
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Publication number: 20140055226Abstract: A variable coupled inductor includes a first core, two conducting wires, a second core and a magnetic structure. The first core includes two first protruding portions, a second protruding portion and two grooves, wherein the second protruding portion is located between the two first protruding portions and each of the grooves is located between one of the first protruding portions and the second protruding portion. Each of the conducting wires is disposed in one of the grooves. The second core is disposed on the first core. A first gap is formed between each of the first protruding portions and the second core and a second gap is formed between the second protruding portion and the second core. The magnetic structure is disposed between the second protruding portion and the second core and distributed symmetrically with respect to a centerline of the second protruding portion.Type: ApplicationFiled: August 16, 2013Publication date: February 27, 2014Applicant: CYNTEC CO., LTD.Inventors: Lan-Chin Hsieh, Cheng-Chang Lee, Chih-Hung Chang, Chih-Siang Chuang, Tsung-Chan Wu, Roger Hsieh
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Publication number: 20130328653Abstract: A choke includes a single-piece core made of a same material, the single-piece core having a first board, a second board, and a pillar located between the first and second boards, a winding space located among the first board, the second board and the pillar, wherein the pillar has a non-circular and non-rectangular cross section having a first axis and a second axis substantially perpendicularly intersecting with each other at a center of the cross section of the pillar, and wherein a circumference of the cross section of the pillar includes two arc edges, four first substantially straight edges substantially parallel to the first axis, and two second substantially straight edges substantially parallel to the second axis, each of the first substantially straight edges being a joint of and in direct contact with one of the arc edges and one of the second substantially straight edges.Type: ApplicationFiled: August 5, 2013Publication date: December 12, 2013Applicant: CYNTEC CO., LTD.Inventors: Tsung-Chan WU, Roger HSIEH, Yi-Min HUANG, Lan-Chin HSIEH, Yu-Ching KUO, Chia-Hui LAI
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Patent number: 8212641Abstract: An electronic device including a core, at least a wire and a magnetic material is provided. The core includes a pillar, a top board and a bottom board. The pillar is disposed between the top board and the bottom board. An area of the top board is smaller than an area of the bottom board. A winding space is fanned among the top board, the bottom board and the pillar. The wire is winded around the pillar and located in the winding space. The magnetic material fills the winding space to encapsulate the wire. The magnetic material includes a resin and a metallic powder, wherein an average particle diameter of the magnetic powder is smaller than 20 ?m.Type: GrantFiled: February 22, 2010Date of Patent: July 3, 2012Assignee: Cyntec Co., Ltd.Inventors: Tsung-Chan Wu, Roger Hsieh, Yi-Min Huang, Lan-Chin Hsieh
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Publication number: 20120086534Abstract: A choke includes a single-piece core entirely made of a same material, the single-piece core having two boards and a pillar located between the two boards, a winding space being located among the two boards and the pillar, wherein the pillar has a non-circular and non-rectangular cross section along a direction substantially perpendicular to an axial direction of the pillar, the cross section of the pillar has a first axis and a second axis intersecting with each other at a center of the cross section of the pillar and are substantially perpendicular with each other, the first axis is longer than the second axis, and the cross section of the pillar is substantially symmetrical to both of the first axis and the second axis.Type: ApplicationFiled: December 20, 2011Publication date: April 12, 2012Inventors: Tsung-Chan Wu, Roger Hsieh, Yi-Min Huang, Lan-Chin Hsieh, Yu-Ching Kuo
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Publication number: 20100308950Abstract: A choke including a core and a hollow coil is provided. The core includes a first core body and a second core body. The first core body includes a pillar. The second core body is a flat plate and has an opening. An end of the pillar is suitable to be disposed in the opening and joined to the same. The hollow coil is fitted on the pillar.Type: ApplicationFiled: December 18, 2009Publication date: December 9, 2010Applicant: CYNTEC CO., LTD.Inventors: Lan-Chin Hsieh, Roger Hsieh, Yu-Ching Kuo, Chun-Tiao Liu
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Publication number: 20100219924Abstract: An electronic device including a core, at least a wire and a magnetic material is provided. The core includes a pillar, a top board and a bottom board. The pillar is disposed between the top board and the bottom board. An area of the top board is smaller than an area of the bottom board. A winding space is fanned among the top board, the bottom board and the pillar. The wire is winded around the pillar and located in the winding space. The magnetic material fills the winding space to encapsulate the wire. The magnetic material includes a resin and a metallic powder, wherein an average particle diameter of the magnetic powder is smaller than 20 ?m.Type: ApplicationFiled: February 22, 2010Publication date: September 2, 2010Applicant: CYNTEC CO., LTD.Inventors: Tsung-Chan Wu, Roger Hsieh, Yi-Min Huang, Lan-Chin Hsieh
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Publication number: 20100182115Abstract: A choke coil including a drum-core and at least one wire is provided. The drum-core includes a pillar, a first board and a second board. Two ends of the pillar are respectively connected to the first board and the second board. A material of the drum-core includes ferrous alloy. The wire has a winding portion wrapped around the pillar.Type: ApplicationFiled: September 22, 2009Publication date: July 22, 2010Applicant: CYNTEC CO., LTD.Inventors: Yi-Min Huang, Roger Hsieh, Lan-Chin Hsieh, Tsung-Chan Wu
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Publication number: 20100182114Abstract: A method for adjusting the inductance of a choke is provided by the present invention. The method includes with an unchanged structure and unchanged dimensions of the core of the choke, changing the kind of the magnetic materials composing the cores so as to adjust the magnetic permeability of the magnetic material. In addition, the present invention also provides a method for designing a choke, the method includes determining the structure of a first choke and a second choke, determining the dimensions of the cores of the chokes, and selecting magnetic materials composing the cores.Type: ApplicationFiled: September 4, 2009Publication date: July 22, 2010Applicant: Cyntec Co., Ltd.Inventors: Yi-Min Huang, Roger Hsieh, Lan-Chin Hsieh, Tsung-Chan Wu
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Patent number: 7623014Abstract: In one embodiment, a choke coil has a magnetic core, a coil, and magnetic material. The core has a first permeability which is from about 350 to 1200. The coil is wrapped around the core. The magnetic material surrounds the coil and has a second permeability. The first permeability is higher than the second permeability. The second permeability is from about 5 to 30.Type: GrantFiled: May 27, 2008Date of Patent: November 24, 2009Assignee: Cyntec Co., Ltd.Inventors: Roger Hsieh, Yi-Min Huang, Lan-Chin Hsieh, Yung-Chien Wang
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Publication number: 20090212894Abstract: In one embodiment, a choke coil has a magnetic core, a coil, and magnetic material. The core has a first permeability which is from about 350 to 1200. The coil is wrapped around the core. The magnetic material surrounds the coil and has a second permeability. The first permeability is higher than the second permeability. The second permeability is from about 5 to 30.Type: ApplicationFiled: May 27, 2008Publication date: August 27, 2009Applicant: Cyntec Co., Ltd.Inventors: Roger Hsieh, Yi-Min Huang, Lan-Chin Hsieh, Yung-Chien Wang
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Patent number: 7531883Abstract: A magneto-resistance transistor including a magneto-resistant element which may function as an emitter and a passive element which may function as a collector. The base may be interposed between the passive element and the magneto-resistant element, thereby coupling the passive element with the magneto-resistant element. A magnetic field of a given strength may be applied to at least a portion of the magneto-resistant transistor, the given strength determining a resistance in the at least a portion of the magneto-resistant transistor. Thus, by adjusting the given strength of the magnetic field, the resistance may be adjusted. Therefore, different emitter current inputs may be achieved with a fixed voltage. Further, a base current may vary with a controlled variation of the emitter current input.Type: GrantFiled: November 17, 2006Date of Patent: May 12, 2009Assignee: Industrial Technology Research InstituteInventors: Ying-Wen Huang, Chi-Kuen Lo, Yeong-Der Yao, Lan-Chin Hsieh, Jau-Jiu Ju, Der-Ray Huang