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1. US20120139685 - Inductor with thermally stable resistance

Office United States of America
Application Number 13198274
Application Date 04.08.2011
Publication Number 20120139685
Publication Date 07.06.2012
Grant Number 08378772
Grant Date 19.02.2013
Publication Kind B2
IPC
H01F 17/06
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
17Fixed inductances of the signal type
04with magnetic core
06with core substantially closed in itself, e.g. toroid
CPC
H01F 27/40
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
27Details of transformers or inductances, in general
40Structural association with built-in electric component, e.g. fuse
H01F 3/08
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
3Cores, Yokes, or armatures
08made from powder
H01F 17/04
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
17Fixed inductances of the signal type
04with magnetic core
H01F 27/292
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
27Details of transformers or inductances, in general
28Coils; Windings; Conductive connections
29Terminals; Tapping arrangements ; for signal inductances
292Surface mounted devices
H01F 41/02
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
41Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
02for manufacturing cores, coils, or magnets
H01F 2017/048
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
17Fixed inductances of the signal type
04with magnetic core
048with encapsulating core, e.g. made of resin and magnetic powder
Applicants Hansen Thomas T.
Vishay Dale Electronics, Inc.
Hoffman Jerome J.
Shafer Timothy
Schade Nicholas J.
Lange David
Smith Clark
Brune Rod
Inventors Hansen Thomas T.
Hoffman Jerome J.
Shafer Timothy
Schade Nicholas J.
Lange David
Smith Clark
Brune Rod
Agents Volpe and Koenig, P.C.
Title
(EN) Inductor with thermally stable resistance
Abstract
(EN)

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.