CN202307440U

CN202307440U - EMC (Electro Magnetic Compatibility) filter inductance iron core

Info

Publication number: CN202307440U
Application number: CN2011203619180U
Authority: CN
Inventors: 程家集
Original assignee: WUHAN CHENYANG ELECTRONIC TECHNOLOGY Co Ltd
Current assignee: WUHAN CHENYANG ELECTRONIC TECHNOLOGY Co Ltd
Priority date: 2011-09-26
Filing date: 2011-09-26
Publication date: 2012-07-04
Anticipated expiration: 2021-09-26

Abstract

The utility model relates to an EMC (Electro Magnetic Compatibility) filter inductance iron core which is characterized in that a main body is formed by overlapping a ferrite iron core and a nanocrystalline iron core. According to the EMC filter inductance iron core, the applicable frequency of the iron core is increased, the EMC cost of an electrical appliance is reduced, and volume and energy consumption of the electrical appliance are decreased.

Description

A kind of EMC filter inductance iron core

Technical field

The utility model relates to inductance component, is specially a kind of EMC filter inductance iron core.

Background technology

In our surrounding enviroment, at every moment all exist various electromagnetic energies, these electromagnetic energies may make the operation of electronic equipment produce unnecessary response.EMC is a particularly very important performance of transformer of electronic product, and electromagnetic compatibility problem both possibly exist between the system, also possibly have the inside of system.

When in the lead electric current being arranged, promptly set up magnetic field around it.Usually we are lead coiled coil, with the inner magnetic field of intensifier coil.Inductance coil is exactly to lean on lead one circle one circle on insulated tube (insulator, iron core or magnetic core), to process in view of the above (insulation each other between lead).Ordinary circumstance, inductance coil have only a winding.

When selecting the EMC iron core usually for use, the iron core material can be selected ferrite or nanocrystalline.Wherein ferrite iron core is useful in 1 ~ 30MHZ, and nanocrystalline iron core is useful in below the 2MHZ.Select for use the part of shortcoming and defect for the moment of these two kinds of materials to be:

1), to be suitable for frequency range little, needs multiple-stage filtering through EMC test, the cost height;

2), need core volume big or winding turns is many, increase cost.

Summary of the invention

The purpose of the utility model is to overcome the shortcoming of prior art, and a kind of EMC filter inductance iron core is provided, and has increased the suitable frequency of iron core, reduces the cost of electrical equipment EMC, reduces the volume and the energy consumption of electrical equipment.

For solving above technical problem, the utility model technical scheme is: a kind of EMC filter inductance iron core, its difference is: its main body is formed by stacking ferrite iron core and nanocrystalline iron core.

The contrast prior art, the beneficial features of the utility model is following:

1), this EMC filter inductance iron core, applicable below 30MHZ all frequencies, under the same terms more easily through EMC test.

2), this EMC filter inductance iron core, can reduce the one-level filter inductance under the same terms, reduce the cost of electrical equipment EMC.

3), this EMC filter inductance iron core, the same terms can be selected down the iron core of smaller size smaller, reduces around around the number of turn, reduces the volume and the energy consumption of electrical equipment.

Description of drawings

Fig. 1 is the utility model EMC filter inductance iron core overall structure sketch map.

Wherein: 1-ferrite iron core, the nanocrystalline iron core of 2-.

Embodiment

Combine accompanying drawing that the utility model is done further explain through embodiment below.

Please refer to Fig. 1, the utility model EMC filter inductance iron core, both are formed by stacking its main body ferrite iron core 1 and nanocrystalline iron core 2.

Description further, ferrite iron core 1, nanocrystalline iron core 2 have the ring-shaped cylinder body structure of through hole in the middle of being, and ferrite iron core 1, nanocrystalline iron core 2 are formed by stacking mutually through end face separately.

Above content is the further explain that combines concrete execution mode that the utility model is done, and can not assert that the practical implementation of the utility model is confined to these explanations.For the those of ordinary skill of technical field under the utility model, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be regarded as belonging to the protection range of the utility model.

Claims

1. EMC filter inductance iron core, it is characterized in that: its main body is formed by stacking ferrite iron core and nanocrystalline iron core.