CN202454396U - Composite soft magnetic core for filter - Google Patents
Composite soft magnetic core for filter Download PDFInfo
- Publication number
- CN202454396U CN202454396U CN2012200808433U CN201220080843U CN202454396U CN 202454396 U CN202454396 U CN 202454396U CN 2012200808433 U CN2012200808433 U CN 2012200808433U CN 201220080843 U CN201220080843 U CN 201220080843U CN 202454396 U CN202454396 U CN 202454396U
- Authority
- CN
- China
- Prior art keywords
- magnetic core
- magnetic
- composite soft
- filter
- core assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 12
- 239000000463 material Substances 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 10
- 229910000859 α-Fe Inorganic materials 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 239000011162 core material Substances 0.000 description 32
- 229910003962 NiZn Inorganic materials 0.000 description 7
- 239000006247 magnetic powder Substances 0.000 description 7
- 230000004907 flux Effects 0.000 description 5
- 229910002555 FeNi Inorganic materials 0.000 description 1
- 229910005347 FeSi Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
Images
Abstract
The utility model discloses a composite soft magnetic core for a filter. The composite soft magnetic core comprises a C type magnetic core assembly A and a C type magnetic core assembly B, wherein the magnetic core assembly A and the magnetic core assembly are combined to a cylindrical magnetic core. The composite soft magnetic core, provided by the utility model, has good direct current superposition characteristic and low heating.
Description
Technical field
The utility model relates to a kind of composite soft-magnetic magnetic core, and particularly a kind of filter is used the composite soft-magnetic magnetic core.
Background technology
Along with fast development of information technology, electromagnetic compatibility and electromagnetic interference become the focus that people pay close attention to.As the electromagnetic interface filter of one of anti-electromagnetic interference important devices, generally use in various electronic circuits, bringing into play more and more important effect.At present, electronic devices and components constantly develop to miniaturization and high power, broadband direction, require electromagnetic interface filter to have better dc superposition characteristic, and heating is low more good more simultaneously.Traditional electromagnetic interface filter is with the general independent use NiZn ferrite of magnetic core.The ferritic frequency of utilization of NiZn is higher, but saturation flux density Bs is lower, and power loss is bigger.The device that uses the NiZn ferrite to make, its dc superposition characteristic is relatively poor; Particularly when electric current increased, power loss significantly increased.
Summary of the invention
The utility model technical problem to be solved provides a kind of filter and uses the composite soft-magnetic magnetic core, and dc superposition characteristic is good, and it is low to generate heat.
The technical scheme that the utility model technical solution problem adopts is: a kind of filter is used the composite soft-magnetic magnetic core, comprises C type magnetic core assembly A and C type magnetic core assembly B, and said magnetic core assembly A and magnetic core assembly B are combined into the cartridge type magnetic core.
As a kind of preferred, said magnetic core assembly A adopts Ferrite Material, and said magnetic core assembly B adopts metal magnetic heartwood material.
The metal magnetic heartwood material that the utility model adopts can be in FeSiAl magnetic powder core, FeSi magnetic powder core, FeNiMo magnetic powder core, high magnetic flux FeNi magnetic powder core and the amorphous magnetic powder core any.
In the utility model, the combination of assembly A and assembly B can adopt the mode of epoxy resin or waterglass bonding to realize.
The material behavior of the General N iZn ferrite and the metal magnetic heart contrasts like following table:
| Material | The NiZn ferrite | The metal magnetic heart |
| Applying frequency scope (Hz) | >1M | 1k～1000k |
| Initial permeability μ i | 5～2500 | 10～500 |
| Saturation flux density Bs (mT) | 250～500 | 750～1600 |
| Curie temperature Tc (℃) | 120～450 | >300 |
| Power loss | High | Low |
The beneficial effect of the utility model is: adopt the C type magnetic core assembly A of Ferrite Material and the C type magnetic core assembly B of metal magnetic heartwood material to make up the cartridge type magnetic core of making; On the one hand since the ferritic frequency of utilization of NiZn in being higher than the scope of 1MHz; The frequency of utilization of the metal magnetic heart in being lower than the 1MHz scope, thereby widened the scope of device frequency of utilization; On the other hand because the saturation flux density Bs of the metal magnetic heart (750～1600mT) apparently higher than the ferritic saturation flux density Bs of NiZn (≤500mT), thereby improved the DC stacked performance of device; The 3rd, the power consumption loss of metal magnetic powder core is lower, helps reducing the heating of device.NiZn ferrite and metal magnetic heartwood material are used in combination, learn from other's strong points to offset one's weaknesses, the Kuan Pin ﹑ that has satisfied the electromagnetic interface filter magnetic core is high DC stacked, the requirement of low heat emission.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Below in conjunction with accompanying drawing the utility model is further specified.
Embodiment
As shown in Figure 1, a kind of filter is used the composite soft-magnetic magnetic core, comprises the C type magnetic core assembly A1 of Ferrite Material and the C type magnetic core assembly B2 of FeSiAl magnetic powder core material, and magnetic core assembly A1 and magnetic core assembly B2 are combined into the cartridge type magnetic core through bonding.This magnetic core has satisfied that the Kuan Pin ﹑ of electromagnetic interface filter magnetic core is high DC stacked, the requirement of low heat emission.
Claims (2)
1. a filter is used the composite soft-magnetic magnetic core, it is characterized in that: comprise C type magnetic core assembly A (1) and C type magnetic core assembly B (2), said magnetic core assembly A (1) and magnetic core assembly B (2) are combined into the cartridge type magnetic core.
2. a kind of filter as claimed in claim 1 is used the composite soft-magnetic magnetic core, it is characterized in that: said magnetic core assembly A (1) adopts Ferrite Material, and said magnetic core assembly B (2) adopts metal magnetic heartwood material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200808433U CN202454396U (en) | 2012-03-07 | 2012-03-07 | Composite soft magnetic core for filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200808433U CN202454396U (en) | 2012-03-07 | 2012-03-07 | Composite soft magnetic core for filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202454396U true CN202454396U (en) | 2012-09-26 |
Family
ID=46870238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200808433U Expired - Lifetime CN202454396U (en) | 2012-03-07 | 2012-03-07 | Composite soft magnetic core for filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202454396U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102956344A (en) * | 2012-11-02 | 2013-03-06 | 华为技术有限公司 | Composite magnetic core structure and magnetic element |
| CN103440965A (en) * | 2013-08-14 | 2013-12-11 | 昆山达功电子有限公司 | Transformer magnetic core |
| CN103474196A (en) * | 2013-08-28 | 2013-12-25 | 昆山佑翔电子科技有限公司 | Combined magnetic ring |
-
2012
- 2012-03-07 CN CN2012200808433U patent/CN202454396U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102956344A (en) * | 2012-11-02 | 2013-03-06 | 华为技术有限公司 | Composite magnetic core structure and magnetic element |
| CN102956344B (en) * | 2012-11-02 | 2016-06-29 | 华为技术有限公司 | A kind of composite cores structure and magnetics |
| CN103440965A (en) * | 2013-08-14 | 2013-12-11 | 昆山达功电子有限公司 | Transformer magnetic core |
| CN103474196A (en) * | 2013-08-28 | 2013-12-25 | 昆山佑翔电子科技有限公司 | Combined magnetic ring |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB201319328D0 (en) | Antenna Device and communication terminal device | |
| CN202454396U (en) | Composite soft magnetic core for filter | |
| CN102610370A (en) | Composite soft magnetic core for resisting electromagnetic interference | |
| CN204270250U (en) | A kind of time writer of bimag | |
| CN202454369U (en) | Composite soft magnet core for resisting electromagnetic interference | |
| CN202662442U (en) | Planar high-frequency transformer based on single-deck PCB (Printed Circuit Board) | |
| TW201234396A (en) | Low-loss and gapless choke | |
| CN202473522U (en) | Compound soft magnetic core for power inductance | |
| CN202473523U (en) | Composite soft magnetism magnetic core for inductance | |
| CN203850086U (en) | Low-radiation energy-saving type common-mode choke | |
| CN202049839U (en) | Ferrite core | |
| CN202454395U (en) | Complex ferrite magnetic core for power inductor | |
| CN202678076U (en) | Driver transformer for MOS (metal oxide semiconductor) transistors of power converters | |
| CN202454370U (en) | Composite soft magnetic core for near field communication (NFC) | |
| CN208834837U (en) | A kind of demagnetization transformer | |
| CN102306536A (en) | Ferrite magnetic core | |
| CN202584990U (en) | Gyromagnetic magnet device | |
| CN202513000U (en) | Magnetic core of high-frequency choke coil for light-emitting diode (LED) | |
| CN202049842U (en) | Ferrite core for high-frequency choke coil | |
| CN202513001U (en) | Differential mode choking coil magnetic core for light-emitting diode (LED) | |
| CN207517505U (en) | A kind of power factor (PF) variable inductor | |
| CN204442144U (en) | A kind of two magnet button self-generating device | |
| CN202443827U (en) | Novel transformer | |
| CN202049840U (en) | Ferrite core for fixing inductor | |
| CN203787246U (en) | Novel inductor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120926 |