Patents Assigned to Vishay Dale Electronics, Inc.
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Patent number: 8004379Abstract: A biased gap inductor includes a first ferromagnetic plate, a second ferromagnetic plate, a conductor sandwiched between the first ferromagnetic plate and the second ferromagnetic plate, and an adhesive between the first ferromagnetic plate and the second ferromagnetic plate, the adhesive comprising magnet powder to thereby form at least one magnetic gap. A method of forming an inductor includes providing a first ferromagnetic plate and a second ferromagnetic plate and a conductor, placing the conductor between the first ferromagnetic plate and the second ferromagnetic plate, adhering the first ferromagnetic plate to the second ferromagnetic plate with a composition comprising an adhesive and a magnet powder to form magnetic gaps, and magnetizing the inductor.Type: GrantFiled: June 6, 2008Date of Patent: August 23, 2011Assignee: Vishay Dale Electronics, Inc.Inventor: Thomas T. Hansen
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Publication number: 20110197433Abstract: A highly coupled inductor includes a first ferromagnetic plate, a second ferromagnetic plate, a film adhesive between the first ferromagnetic plate and the second ferromagnetic plate, a first conductor between the first plate and the second plate, and a second conductor between the first plate and the second plate. A conducting electromagnetic shield may be positioned proximate the first conductor for enhancing coupling and reducing leakage flux. A method of manufacturing a highly coupled inductor component includes providing a first ferromagnetic plate and a second ferromagnetic plate, placing conductors between the first ferromagnetic plate and the second ferromagnetic plate, and connecting the first ferromagnetic plate and the second ferromagnetic plate using a film adhesive.Type: ApplicationFiled: April 28, 2011Publication date: August 18, 2011Applicant: VISHAY DALE ELECTRONICS, INC.Inventor: Thomas T. Hansen
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Patent number: 7986207Abstract: A high current, low profile inductor includes a conductor coil surrounded by magnetic material to form an inductor body. An inductor body is formed around the inductor coil and includes a resin and a magnetic material compressed while it is dry and surrounding the inside and the outside of the coil.Type: GrantFiled: August 5, 2009Date of Patent: July 26, 2011Assignee: Vishay Dale Electronics, Inc.Inventors: Timothy M. Shafer, Brett W. Jelkin
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Publication number: 20110162197Abstract: A resistor includes a substantially cylindrical resistive element having a resistance of less than about 1 m?, a substantially cylindrical first termination electrically connected to the resistive element and a second termination electrically connected to the resistive element. The substantially cylindrical first termination is hollow to allow for accepting a connection such as from a battery cable. In addition there may be sense leads present on the resistor. A method of forming a substantially cylindrical resistor includes forming a hollow cylindrical resistor body by rolling a flat sheet comprising a resistive element and a first termination and a second termination joined on opposite ends of the resistive element.Type: ApplicationFiled: March 18, 2011Publication date: July 7, 2011Applicant: VISHAY DALE ELECTRONICS, INC.Inventors: Clark L. Smith, Joel J. Smejkal, David Lange, Thomas L. Bertsch, Steve Hendricks, Rod Brune
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Publication number: 20110156860Abstract: A metal strip resistor is provided with a resistive element disposed between a first termination and a second termination. The resistive element, first termination, and second termination form a substantially flat plate. A thermally conductive and electrically non-conductive thermal interface material such as a thermally conductive adhesive is disposed between the resistive element and first and second heat pads that are placed on top of the resistive element and adjacent to the first and second terminations, respectively.Type: ApplicationFiled: December 30, 2009Publication date: June 30, 2011Applicant: VISHAY DALE ELECTRONICS, INC.Inventors: CLARK L. SMITH, TODD L. WYATT, THOMAS L. BERTSCH, RODNEY J. BRUNE
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Patent number: 7936244Abstract: A highly coupled inductor includes a first ferromagnetic plate, a second ferromagnetic plate, a film adhesive between the first ferromagnetic plate and the second ferromagnetic plate, a first conductor between the first plate and the second plate, and a second conductor between the first plate and the second plate. A conducting electromagnetic shield may be positioned proximate the first conductor for enhancing coupling and reducing leakage flux. A method of manufacturing a highly coupled inductor component includes providing a first ferromagnetic plate and a second ferromagnetic plate, placing conductors between the first ferromagnetic plate and the second ferromagnetic plate, and connecting the first ferromagnetic plate and the second ferromagnetic plate using a film adhesive.Type: GrantFiled: May 2, 2008Date of Patent: May 3, 2011Assignee: Vishay Dale Electronics, Inc.Inventor: Thomas T. Hansen
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Patent number: 7921546Abstract: A method for making a high current low profile inductor includes forming an inductor element comprising a coil having an open center and an outside surface, the coil also having first and second coil ends, making a dry mixture comprising a dry resin and an insulated dry powdered magnetic powder, and compressing the dry mixture around the outside surface of the coil and within the open center of the coil to create an inductor body without liquefying the dry mixture, whereby the inductor body engages the coil both within the coil open center and also the coil outside surface.Type: GrantFiled: January 14, 2008Date of Patent: April 12, 2011Assignee: Vishay Dale Electronics, Inc.Inventors: Timothy M. Shafer, Brett W. Jelkin
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Patent number: 7911319Abstract: A resistor includes a substantially cylindrical resistive element having a resistance of less than about 1 m?, a substantially cylindrical first termination electrically connected to the resistive element and a second termination electrically connected to the resistive element. The substantially cylindrical first termination is hollow to allow for accepting a connection such as from a battery cable. In addition there may be sense leads present on the resistor. A method of forming a substantially cylindrical resistor includes forming a hollow cylindrical resistor body by rolling a flat sheet comprising a resistive element and a first termination and a second termination joined on opposite ends of the resistive element.Type: GrantFiled: February 6, 2008Date of Patent: March 22, 2011Assignee: Vishay Dale Electronics, Inc.Inventors: Clark L. Smith, Joel J. Smejkal, David Lange, Thomas L. Bertsch, Steve Hendricks, Rod Brune
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Publication number: 20110063071Abstract: A power resistor includes first and second opposite terminations, a resistive element formed from a plurality of resistive element segments between the first and second opposite terminations, at least one segmenting conductive strip separating two of the resistive element segments, and at least one open area between the first and second opposite terminations and separating at least two resistive element segments. Separation of the plurality of resistive element segments assists in spreading heat throughout the power resistor. The power resistor or other electronic component may be packaged by bonding to a heat sink tab with a thermally conductive and electrically insulative material.Type: ApplicationFiled: November 19, 2010Publication date: March 17, 2011Applicant: VISHAY DALE ELECTRONICS, INC.Inventors: FELIX ZANDMAN, CLARK L. SMITH, TODD L. WYATT, THOMAS L. VEIK, THOMAS L. BERTSCH
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Publication number: 20110057764Abstract: A current sense resistor and a method of manufacturing a current sensing resistor with temperature coefficient of resistance (TCR) compensation is disclosed. The resistor has a resistive strip disposed between two conductive strips. A pair of main terminals and a pair of voltage sense terminals are formed in the conductive strips. A pair of rough TCR calibration slots are located between the main terminals and the voltage sense terminals, each of the rough TCR calibration slots have a depth selected to obtain a negative starting TCR value observed at the voltage sense terminals. A fine TCR calibration slot is formed between the pair of voltage sense terminals. The fine TCR calibration slot has a depth selected to obtain a TCR value observed at the voltage sense terminals that approaches zero. The resistor can also have a resistance calibration slot located between the pair of main terminals. The resistance calibration slot has a depth selected to calibrate a resistance value of the resistor.Type: ApplicationFiled: September 2, 2010Publication date: March 10, 2011Applicant: VISHAY DALE ELECTRONICS, INC.Inventors: Clark L. Smith, Thomas L. Bertsch, Todd L. Wyatt, Thomas L. Veik
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Patent number: 7864015Abstract: A flux-channeled high current inductor includes an inductor body having a first end and an opposite second end and a conductor extending through the inductor body. The conductor includes a plurality of separate channels through a cross-sectional area of the inductor body thereby directing magnetic flux inducted by a current flowing through the conductor into two or more cross-sectional areas and reducing flux density of a given single area. The inductor body may be formed of a first ferromagnetic plate and a second ferromagnetic plate. The inductor may be formed from a single component magnetic core and have one or more slits to define inductance. The inductor may be formed of a magnetic powder. A method is provided for manufacturing flux-channeled high current inductors.Type: GrantFiled: April 26, 2006Date of Patent: January 4, 2011Assignee: Vishay Dale Electronics, Inc.Inventors: Thomas T. Hansen, Jerome J. Hoffman
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Patent number: 7843309Abstract: A resistor includes first and second opposite terminations, a resistive element formed from a plurality of resistive element segments between the first and second opposite terminations, at least one segmenting conductive strip separating two of the resistive element segments, and at least one open area between the first and second opposite terminations and separating at least two resistive element segments. Separation of the plurality of resistive element segments assists in spreading heat throughout the resistor. The resistor or other electronic component may be packaged by bonding to a heat sink tab with a thermally conductive and electrically insulative material. The resistive element may be a metal strip, a foil, or film material.Type: GrantFiled: September 27, 2007Date of Patent: November 30, 2010Assignee: Vishay Dale Electronics, Inc.Inventors: Felix Zandman, Clark L. Smith, Todd L. Wyatt, Thomas L. Veik, Thomas L. Bertsch
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Publication number: 20100237982Abstract: A metal strip resistor includes a resistor body having a resistive element formed from a strip of an electrically resistive metal material and a first termination electrically connected to the resistive element to form a first junction and a second termination electrically connected to the resistive element to form a second junction, the first termination and the second termination formed from strips of electrically conductive metal material. The resistive element, the first termination, and the second termination being arranged mitigate thermally induced voltages between the first junction and the second junction.Type: ApplicationFiled: August 6, 2009Publication date: September 23, 2010Applicant: VISHAY DALE ELECTRONICS, INC.Inventors: Doug Brackhan, Clark L. Smith, Thomas L. Veik
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Publication number: 20100060409Abstract: A metal strip resistor is provided. The metal strip resistor includes a metal strip forming a resistive element and providing support for the metal strip resistor without use of a separate substrate. There are first and second opposite terminations overlaying the metal strip. There is plating on each of the first and second opposite terminations. There is also an insulating material overlaying the metal strip between the first and second opposite terminations. A method for forming a metal strip resistor wherein a metal strip provides support for the metal strip resistor without use of a separate substrate is provided. The method includes coating an insulative material to the metal strip, applying a lithographic process to form a conductive pattern overlaying the resistive material wherein the conductive pattern includes first and second opposite terminations, electroplating the conductive pattern, and adjusting resistance of the metal strip.Type: ApplicationFiled: September 5, 2008Publication date: March 11, 2010Applicant: VISHAY DALE ELECTRONICS, INC.Inventors: CLARK L. SMITH, THOMAS L. BERTSCH, TODD L. WYATT, THOMAS L. VEIK, RODNEY BRUNE
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Publication number: 20100007455Abstract: A high current, low profile inductor includes a conductor coil surrounded by magnetic material to form an inductor body. An inductor body is formed around the inductor coil and includes a resin and a magnetic material compressed while it is dry and surrounding the inside and the outside of the coil.Type: ApplicationFiled: August 5, 2009Publication date: January 14, 2010Applicant: VISHAY DALE ELECTRONICS, INC.Inventors: Timothy M. Shafer, Brett W. Jelkin
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Publication number: 20090273432Abstract: A highly coupled inductor includes a first ferromagnetic plate, a second ferromagnetic plate, a film adhesive between the first ferromagnetic plate and the second ferromagnetic plate, a first conductor between the first plate and the second plate, and a second conductor between the first plate and the second plate. A conducting electromagnetic shield may be positioned proximate the first conductor for enhancing coupling and reducing leakage flux. A method of manufacturing a highly coupled inductor component includes providing a first ferromagnetic plate and a second ferromagnetic plate, placing conductors between the first ferromagnetic plate and the second ferromagnetic plate, and connecting the first ferromagnetic plate and the second ferromagnetic plate using a film adhesive.Type: ApplicationFiled: May 2, 2008Publication date: November 5, 2009Applicant: VISHAY DALE ELECTRONICS, INC.Inventor: THOMAS T. HANSEN
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Publication number: 20090195348Abstract: A resistor includes a substantially cylindrical resistive element having a resistance of less than about 1 m?, a substantially cylindrical first termination electrically connected to the resistive element and a second termination electrically connected to the resistive element. The substantially cylindrical first termination is hollow to allow for accepting a connection such as from a battery cable. In addition there may be sense leads present on the resistor. A method of forming a substantially cylindrical resistor includes forming a hollow cylindrical resistor body by rolling a flat sheet comprising a resistive element and a first termination and a second termination joined on opposite ends of the resistive element.Type: ApplicationFiled: February 6, 2008Publication date: August 6, 2009Applicant: VISHAY DALE ELECTRONICS, INC.Inventors: CLARK L. SMITH, JOEL J. SMEJKAL, DAVID LANGE, THOMAS L. BERTSCH, STEVE HENDRICKS, ROD BRUNE
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Publication number: 20090085715Abstract: A resistor includes first and second opposite terminations, a resistive element formed from a plurality of resistive element segments between the first and second opposite terminations, at least one segmenting conductive strip separating two of the resistive element segments, and at least one open area between the first and second opposite terminations and separating at least two resistive element segments. Separation of the plurality of resistive element segments assists in spreading heat throughout the resistor. The resistor or other electronic component may be packaged by bonding to a heat sink tab with a thermally conductive and electrically insulative material. The resistive element may be a metal strip, a foil, or film material.Type: ApplicationFiled: September 27, 2007Publication date: April 2, 2009Applicant: VISHAY DALE ELECTRONICS, INC.Inventors: Felix Zandman, Clark L. Smith, Todd L. Wyatt, Thomas L. Veik, Thomas L. Bertsch
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Publication number: 20090066454Abstract: A biased gap inductor includes a first ferromagnetic plate, a second ferromagnetic plate, a conductor sandwiched between the first ferromagnetic plate and the second ferromagnetic plate, and an adhesive between the first ferromagnetic plate and the second ferromagnetic plate, the adhesive comprising magnet powder to thereby form at least one magnetic gap. A method of forming an inductor includes providing a first ferromagnetic plate and a second ferromagnetic plate and a conductor, placing the conductor between the first ferromagnetic plate and the second ferromagnetic plate, adhering the first ferromagnetic plate to the second ferromagnetic plate with a composition comprising an adhesive and a magnet powder to form magnetic gaps, and magnetizing the inductor.Type: ApplicationFiled: June 6, 2008Publication date: March 12, 2009Applicant: VISHAY DALE ELECTRONICS, INC.Inventor: THOMAS T. HANSEN
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Publication number: 20080110014Abstract: A high current, low profile inductor includes a conductor coil surrounded by magnetic material to form an inductor body. An inductor body is formed around the inductor coil and includes a resin and a magnetic material compressed while it is dry and surrounding the inside and the outside of the coil.Type: ApplicationFiled: January 14, 2008Publication date: May 15, 2008Applicant: VISHAY DALE ELECTRONICS, INC.Inventors: TIMOTHY SHAFER, BRETT JELKIN