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Low profile high current multiple gap inductor assembly

A technology of inductors and components, applied in the direction of inductors, fixed inductors, transformers/inductor coils/windings/connections, etc., can solve problems such as heat loss of electromagnetic devices and increased conductor resistance

Inactive Publication Date: 2005-08-17
TE CONNECTIVITY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Increased conductor resistance results in more heat generation and can directly lead to heat loss and catastrophic failure of the electromagnetic device and / or the circuit or equipment containing the device

Method used

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  • Low profile high current multiple gap inductor assembly
  • Low profile high current multiple gap inductor assembly
  • Low profile high current multiple gap inductor assembly

Examples

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Embodiment Construction

[0024] The present invention presents a new method for dealing with larger air gaps. That is, by arranging and using multiple air gaps along the magnetic circuit, the magnetic field present in the air gaps can easily be reduced by a factor of four. This reduction in the magnetic field reduces the proximity effect, resulting in a reduction in the effective resistance of the wires that comprise the inductor or transformer winding. Current flowing through a conductor exhibiting a reduced effective resistance results in the generation of less heat and a smaller radiated electromagnetic field. Due to the small radiation field, the consequent radiation emissions are small, especially in the case of figure 2 In the preferred embodiment shown. With this new technology, a smaller inductor / transformer structure can achieve a given amount of energy storage with the advantages of low effective resistance, low heat generation, and low radiated emissions.

[0025] Such as figure 2 As sh...

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PUM

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Abstract

An inductor assembly includes a coil or coils of insulated conductor material defining an inside volume, an inner core of magnetic core material located within the inside volume, and an outer core of magnetic core material including structure overlying the coil and inner core and having opposite inner walls facing polar ends of the coil and core, such that at least two magnetic gaps exist between ends of the inner core and the opposite inner walls of the outer core. A method for making the assembly is also disclosed.

Description

technical field [0001] This invention relates to inductors and transformers. In particular, the present invention relates to low profile high current inductors or transformers comprising a ferromagnetic core structure with multiple gaps to reduce stray electromagnetic fields. Background technique [0002] High current low profile inductors and transformers are used in a wide variety of applications in the areas of telecommunication, power conversion and digital data circuits. These electrical components typically use ferromagnetic cores and shields. Ferromagnetic materials such as iron powder, and ferrimagnetic materials such as ferrite (hereinafter also referred to as "ferromagnetic material") have a characteristic temperature above or below which the ferromagnetic material The electromagnetic properties vary greatly. This temperature is known as the Curie temperature. Above the Curie temperature, these materials behave as paramagnetic materials. Below the Curie temper...

Claims

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Application Information

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IPC IPC(8): H01F3/10H01F3/14H01F17/04H01F27/02H01F27/255H01F27/26H01F27/29H01F27/36
CPCH01F17/045H01F27/027H01F3/14H01F27/263H01F27/292H01F27/255H01F3/10H01F27/365H01F27/36H01F27/366H01F27/26
Inventor J·D·霍尔达尔T·塞特格伦C·W·戈特马克
Owner TE CONNECTIVITY CORP