Absorbing material, Shielding material, Electromagnetic shielding, Magnetic sheet, Amorphous nanocrystals.
News Center
Your present position:Home-News Center-Can the shielded box interfere with the surroundings? Back >

Can the shielded box interfere with the surroundings?

Author:admin   AddTime:2021-04-30

The first purpose of the shielding box is to shield the external interference signal from entering the working area, and prevent the interference signal from affecting the test or application of the product. The other purpose is to prevent the internal signal from interfering with the external environment. Simply speaking, it is to prevent external interference signals from entering the box, and to prevent the internal signals of the box from interfering with the outside. Because the shielding box can isolate electromagnetic radiation signals.

There are interference sources around the shielded box products. They will invade the inside of the variable frequency power supply through radiation or power lines, causing the control return to malfunction, causing abnormal operation or shutdown, and even damaging the variable frequency power supply in severe cases. The specific methods to reduce noise interference are: install the control coils of all relays and contactors around the variable frequency power supply with absorbing devices to prevent impulse voltage, such as RC surge absorbers, whose wiring should not exceed 20cm; try to shorten the control loop wiring The distance between the twisted joints of the control circuit of the variable frequency power supply and the main circuit should be more than 15mm, and the distance between the main circuit and the main circuit should be more than 10cm; when the variable frequency power supply is far away from the motor (more than 100m), on one hand The cross-sectional area of the wire can be enlarged, and the line voltage drop is within 2%. At the same time, a variable frequency power supply output reactor should be installed to compensate for the charging current of the distributed capacitance caused by the long-distance wire.



In addition, in many wireless electronic communication industries today, OEM manufacturers will do some inspection work on product quality, and WLAN signal inspection is one of the processes at this time. Then signal interference also arises, and testing becomes extremely difficult; in order to better adapt to the pace of market development, small and medium-sized electromagnetic shielding equipment companies have developed new products to cater to the development of upstream companies, and the shielding box has become particularly important. .

Absorbing Material:https://www.goodsmaterial.com/

Related Articles
The high permeability of shallow of absorbing materials plant absorbing material application

The high permeability of shallow of absorbing materials plant absorbing material application

2021-04-30

First of all, let's see what is high permeability absorbing material: high permeability refers to the…

Analysis of three functions of flexible Ferrite separator on wireless charging Coil in Absorbing Material factory?

Analysis of three functions of flexible Ferrite separator on wireless charging Coil in Absorbing Material factory?

2021-04-30

I have written a lot about the role of ferrite tablets before. Today, I will summarize the three main…

Here are five common NFC ferrite tablets on the market

Here are five common NFC ferrite tablets on the market

2021-04-30

Follow the footsteps of xiaobian, today summarized the next market common in 5 NFC ferrite tablets, I…

Leave A Message

Just tell us your requirements, We can do more than you can imagine.

Links: Wooden Speakers USB Microphone

Shenzhen jingju technology co., LTD., all rights reserved ©2020
Hot Products:absorbing material | shielding material | electromagnetic shielding | magnetic sheet | amorphous nanocrystals