Patents Assigned to Dale Electronic, Inc.
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Publication number: 20160163432Abstract: A thin film resistor formed using thermal spraying techniques in the manufacturing process is provided. A thin film resistor and method of manufacturing a thin film resistor are disclosed including a thermally sprayed resistive element. An alloy bond layer may be applied to a substrate and a thermally sprayed resistive layer is applied to the alloy bond layer by a thermal spraying process to form a thermally sprayed resistive element. The alloy bond layer and the thermally sprayed resistive layer may have the same chemical composition.Type: ApplicationFiled: December 8, 2014Publication date: June 9, 2016Applicant: VISHAY DALE ELECTRONICS, INC.Inventors: Tom J. Martin, Clark Smith, Jeff Traikoff
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Publication number: 20160005533Abstract: An inductor includes an inductor body having a top surface and a first and second opposite end surfaces. There is a void through the inductor body between the first and second opposite end surfaces. A thermally stable resistive element positioned through the void and turned toward the top surface to forms surface mount terminals which can be used for Kelvin type sensing. Where the inductor body is formed of a ferrite, the inductor body includes a slot. The resistive element may be formed of a punched resistive strip and provide for a partial turn or multiple turns. The inductor may be formed of a distributed gap magnetic material formed around the resistive element. A method for manufacturing the inductor includes positioning an inductor body around a thermally stable resistive element such that terminals of the thermally stable resistive element extend from the inductor body.Type: ApplicationFiled: March 10, 2015Publication date: January 7, 2016Applicant: Vishay Dale Electronics, Inc.Inventors: Thomas T. Hansen, Jerome J. Hoffman, Timothy Schafer, Nicholas J. Schade, David Lange, Clark Smith, Rod Brune
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Publication number: 20150348683Abstract: A resistor, resistor assembly, and a method of making them are described, with advantages over existing resistors, resistor assemblies, and methods. The resistor includes a helical resistor element wound on an insulator. The insulator has a regularly spaced plurality of teeth on each of two opposite sides, with the helical resistor element situated within the teeth. The insulator provides support for the helical resistor element without use of a separate core within the insulator. The resistor may be assembled by inserting two toothed insulator pieces into a helical resistor element and separating the two insulator pieces such that turns of the helical resistor element are within the teeth of the first and second insulator pieces. Alternatively, the resistor may be assembled by winding a helical resistor element onto a toothed insulator piece.Type: ApplicationFiled: May 27, 2014Publication date: December 3, 2015Applicant: Vishay Dale Electronics, Inc.Inventor: Daniel Featherstone
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Publication number: 20150287519Abstract: Magnetic components and a method for making them are described. A conducting material may be cut using a high power laser such as, but not limited to, a rare-earth fiber laser such as a Ytterbium fiber laser. Alternatively, a conducting material may be cut using an abrasive water jet. The magnetic components may be planar.Type: ApplicationFiled: April 2, 2014Publication date: October 8, 2015Applicant: Vishay Dale Electronics, Inc.Inventors: Steven R. Bodenstedt, Brian J. Jensen
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Patent number: 9001512Abstract: A heat spreader for a resistive element is provided, the heat spreader having a body portion that is arranged over a top surface of the resistive element and electrically insulated from the resistive element. The heat spreader also includes one or more leg portion that extends from the body portion and are associated with the heat sink in a thermally conductive relationship.Type: GrantFiled: May 3, 2012Date of Patent: April 7, 2015Assignee: Vishay Dale Electronics, Inc.Inventors: Clark L. Smith, Todd L. Wyatt, Thomas L. Veik
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Patent number: 8975994Abstract: An inductor includes an inductor body having a top surface and a first and second opposite end surfaces. There is a void through the inductor body between the first and second opposite end surfaces. A thermally stable resistive element positioned through the void and turned toward the top surface to forms surface mount terminals which can be used for Kelvin type sensing. Where the inductor body is formed of a ferrite, the inductor body includes a slot. The resistive element may be formed of a punched resistive strip and provide for a partial turn or multiple turns. The inductor may be formed of a distributed gap magnetic material formed around the resistive element. A method for manufacturing the inductor includes positioning an inductor body around a thermally stable resistive element such that terminals of the thermally stable resistive element extend from the inductor body.Type: GrantFiled: February 15, 2013Date of Patent: March 10, 2015Assignee: Vishay Dale Electronics, Inc.Inventors: Thomas T. Hansen, Jerome J. Hoffman, Timothy Schafer, Nicholas J. Schade, David Lange, Clark Smith, Rod Brune
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Publication number: 20150054531Abstract: A current sense resistor and a method of manufacturing a current sensing resistor with temperature coefficient of resistance (TCR) compensation are 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 is 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.Type: ApplicationFiled: November 3, 2014Publication date: February 26, 2015Applicant: VISHAY DALE ELECTRONICS, INC.Inventors: Clark L. Smith, Thomas L. Bertsch, Todd L. Wyatt, Thomas L. Veik
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Publication number: 20150042444Abstract: A resistor and an integrated heat spreader are provided. A resistive element having a first surface is in contact with electrically conducting terminals. A heat spreader is provided having at least a portion in thermally conductive contact with at least a portion of the first surface of the resistive element. The heat spreader comprising a thermally conducting and electrically insulating material, and has terminations, each termination adjacent to one of the electrically conducting terminals. Each termination is in thermally conducting contact with the adjacent electrically conducting terminal. A method of fabricating a resistor and an integrated heat spreader is also provided.Type: ApplicationFiled: August 29, 2014Publication date: February 12, 2015Applicant: VISHAY DALE ELECTRONICS, INC.Inventors: Clark Smith, Todd Wyatt
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Publication number: 20140327512Abstract: 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: May 16, 2014Publication date: November 6, 2014Applicant: Vishay Dale Electronics, Inc.Inventors: Clark Smith, Joel J. Smejkal, David Lange, Thomas L. Bertsch, Steve Hendricks, Rod Brune
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Patent number: 8878643Abstract: A current sense resistor and a method of manufacturing a current sensing resistor with temperature coefficient of resistance (TCR) compensation are 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 is 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.Type: GrantFiled: August 30, 2013Date of Patent: November 4, 2014Assignee: Vishay Dale Electronics, Inc.Inventors: Clark L. Smith, Thomas L. Bertsch, Todd L. Wyatt, Thomas L. Veik
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Patent number: 8823483Abstract: An integrated assembly includes a resistor and a heat spreader. The resistor includes a resistive element and terminals. The heat spreader is integrated with the resistor and includes a heat sink of thermally conducting and electrically insulating material and terminations of a thermally conducting material and situated at an edge of the heat sink. At least a portion of a top surface of the resistive element is in thermally conductive contact with the heat sink. Each resistor terminal is in thermally conductive contact with a corresponding termination of the heat sink. A method of fabricating an integrated assembly of a resistor and a heat spreader includes forming the heat spreader, forming the resistor, and joining the heat spreader to the resistor by bonding at least a portion of a top surface of the resistive element to the heat sink and bonding each electrically conducting terminal to a corresponding termination.Type: GrantFiled: December 21, 2012Date of Patent: September 2, 2014Assignee: Vishay Dale Electronics, Inc.Inventors: Clark Smith, Todd Wyatt
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Publication number: 20140210587Abstract: 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: March 28, 2014Publication date: July 31, 2014Applicant: 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: 20140210584Abstract: A low profile high current composite transformer is disclosed. Some embodiments of the transformer include a first conductive winding having a first start lead, a first finish lead, a first plurality of winding turns, and a first hollow core; a second conductive winding having a second start lead, a second finish lead, a second plurality of turns, and a second hollow core; and a soft magnetic composite compressed surrounding the first and second windings. The soft magnetic composite with distributed gap provides for a near linear saturation curve.Type: ApplicationFiled: January 25, 2013Publication date: July 31, 2014Applicant: VISHAY DALE ELECTRONICS, INC.Inventor: Darek BLOW
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Publication number: 20140197784Abstract: Devices to be charged and wireless charging devices are disclosed. A DTBC includes a processing unit, a battery, an axially wound receiver coil and battery charging components. The battery powers the processing unit. The axially wound receiver coil has a first end and a second end located at opposite ends of a central axis of the axially wound receiver coil and receives electromagnetic flux via either one of the first end or the second end. The battery charging components are coupled between the battery and the axially wound receiver coil, convert the electromagnetic flux into direct current (DC) and apply the DC to charge the battery.Type: ApplicationFiled: January 10, 2014Publication date: July 17, 2014Applicant: Vishay Dale Electronics, Inc.Inventor: Randall B. Boldt
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Publication number: 20140176294Abstract: An integrated assembly includes a resistor and a heat spreader. The resistor includes a resistive element and terminals. The heat spreader is integrated with the resistor and includes a heat sink of thermally conducting and electrically insulating material and terminations of a thermally conducting material and situated at an edge of the heat sink. At least a portion of a top surface of the resistive element is in thermally conductive contact with the heat sink. Each resistor terminal is in thermally conductive contact with a corresponding termination of the heat sink. A method of fabricating an integrated assembly of a resistor and a heat spreader includes forming the heat spreader, forming the resistor, and joining the heat spreader to the resistor by bonding at least a portion of a top surface of the resistive element to the heat sink and bonding each electrically conducting terminal to a corresponding termination.Type: ApplicationFiled: December 21, 2012Publication date: June 26, 2014Applicants: VISHAY DALE ELECTRONICS, INC.Inventors: Clark Smith, Todd Wyatt
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Patent number: 8730003Abstract: 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: December 28, 2012Date of Patent: May 20, 2014Assignee: Vishay Dale Electronics, Inc.Inventors: Clark L. Smith, Joel J. Smejkal, David Lange, Thomas L. Bertsch, Steve Hendricks, Rod Brune
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Patent number: 8686828Abstract: 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: GrantFiled: August 8, 2012Date of Patent: April 1, 2014Assignee: 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: 20140002232Abstract: A current sense resistor and a method of manufacturing a current sensing resistor with temperature coefficient of resistance (TCR) compensation are 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 is 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.Type: ApplicationFiled: August 30, 2013Publication date: January 2, 2014Applicant: VISHAY DALE ELECTRONICS, INC.Inventors: Clark L. SMITH, Thomas L. Bertsch, Todd L. Wyatt, Thomas L. Veik
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Patent number: 8581687Abstract: Thermally stable four-terminal resistor (current sensor) is characterized by having the capacity to adjust both resistance and temperature coefficient of resistance (TCR), during manufacturing process. The four-terminal resistor includes 3 or 4 elementary resistors R1-R3 forming a closed loop. Resistor R1 is the principal low-ohmic value resistor. The terminals of resistor R1 serve as “Force” terminals of the four-terminal resistor. Resistors R2, R3 form a voltage divider intended to minimize the TCR of the four-terminal resistor and connected in parallel to resistor R1. The terminals of resistor R3 serve as “Sense” terminals of the four-terminal resistor. Resistor R2 may be split into two resistors: R2a, R2b to simplify the implementation of four-terminal resistor. Elementary resistors R1, R2 must have the same sign of TCR. Target resistance and TCR minimization in four-terminal resistor are reached by adjustment of resistance of the elementary resistors.Type: GrantFiled: August 11, 2009Date of Patent: November 12, 2013Assignee: Vishay Dale Electronics, Inc.Inventor: Michael Belman
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Patent number: 8525637Abstract: A current sense resistor and a method of manufacturing a current sensing resistor with temperature coefficient of resistance (TCR) compensation are 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 is 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.Type: GrantFiled: June 11, 2012Date of Patent: September 3, 2013Assignee: Vishay Dale Electronics, Inc.Inventors: Clark L. Smith, Thomas L. Bertsch, Todd L. Wyatt, Thomas L. Veik