Search Advanced Search

There are 354 EMI filter from 127 suppliers on

Related Searches : transformer, inverter, connector, meter, power transformer, electrical, transformers, cable

Electromagnetic Waves Absorber

  • Share to :
  • Pinterest
Contact Now* Send an Inquiry to this supplier.
Start Order * Name your price
  • Place of Origin :Korea


SEPA can suppress the generation of electromagnetic waves easily and absolutely.
SEPA will take you to the electromagnetic wave free zone

By simply plugging up to electrical or electronic devices into EMI filter (SEPA), you can effectively reduce exposure to EMI to yourself and your family.

SEPA offers the following features

1) Suppresses the electromagnetic waves
It suppresses the generation of electromagnetic waves (band ranging 150 kHz~30MHZ) from electric/electronic products indoor to the limit
well within the international standards (such as FCC of USA, VDE of Germany and international CISPR).

2)Safe from malfunction - Electromagnetic waves can cause product malfunction.
Products generating a lot of electromagnetic waves are vulnerable to malfunction thereby affecting other products in the vicinity.
SEPA enables stable use of home appliances.

3)Improved power factor - Electromagnetic waves deteriorate the product's power factor.
SEPA improves the power factor thereby raising power efficiency and product performance.

4)Over-current, over-voltage protection - SEPA has a circuit that suppresses over-voltage and over-current.
SEPA with a circuit that suppresses changes in current and voltage helps to extend the life of product.

Like you would purify water with water purifier, SEPA filters electromagnetic waves from the plug.

A number of adverse health effects have been studied for possible association
With electromagnetic wave exposure.

These include bearing of a deformed child, amnesia, brain damage, physiological malfunction and reduction in male hormones. Also the excessive exposure to electromagnetic waves have been reported to cause not only minor symptoms such as drowsiness, insomnia, headache, nausea, staff shoulders, but also serious disorders including skin ailments, feeble pulse, spasm and seizure, sexual dysfunction and dementia.

SEPA can suppress the generation of electromagnetic waves easily and absolutely.

What is electromagnetic wave?

Following the air pollution, water pollution and soil pollution, electromagnetic wave is one of the forth type of pollution. Electromagnetic waves are closely related with the human life especially in this 21st century.
Electromagnetic waves exist everywhere as long as there is electricity. they contain a lot of energy. All electromagnetic waves have frequency and wavelength; they are inversely proportional to each other; high frequency radiation is dangerous to living things because individual photons carry enough energy to break the chemical bonds which hold DNA together, and this can lead to damage to the metabolism of the human body. Electromagnetic waves travel through empty space, are reflected at the speed of light, and are refracted thus affecting the human body.
Even if a part of the human body is shielded, electromagnetic waves have no trouble penetrating a human body. Electromagnetic waves are generated 2 - 5 times more at the rear of electric/electronic products than at their front part. In an enclosed space the electromagnetic waves that strike the body are absorbed by the body, and therefore it is important to suppress the generation of electromagnetic waves at source.

Why is Electromagnetic waves Harmful?

Electromagnetic waves induce cancer.
Occupational Medicine Institute of the Ministry of Health, labor and Welfare (Japan) has reported that TNT-a which attacks cancer cells, is reduced by 75% when the human body is exposed to electromagnetic waves thereby increasing the probability of cancer development.

Electromagnetic waves affect cells.
Electromagnetic waves inside the human body interact between cell walls. Cell walls or cell membranes define a boundary between the living cells and its environment maintaining the cell structure. A cell membrane also delivers various information into the cell. Electromagnetic waves interrupt information exchange between the cell walls and the cells.

Electromagnetic waves affect movement of potassium.
Movement of potassium has a close relationship with muscle contraction, ovulation and cell division. If movement of potassium is affected and becomes abnormal by electromagnetic waves, information exchange between cells is confused.

Electromagnetic waves affect reproductive cycle.
A number of studies have shown that fetal anomalies are detected from fetus of chicken and rat exposed to electromagnetic waves.

Electromagnetic waves affect the nervous system.
The nervous system of growing children in particular reacts acutely to electromagnetic waves without immediate clinical manifestation which makes it difficult to diagnose diseases at an early stage.

Electromagnetic waves can interfere with genes.
Radiation ionization has been reported to be harmful directly to the human body as it causes a DNA mutation during the process of decomposition. In particular, it interferes with RNA transcription (DNA Transcription is the process of creating an equivalent RNA copy of a sequence of DNA, and RNA genetic information is applied to the protein production process.)

Electromagnetic waves affect biological rhythms.
Biological rhythms that have periods of about 24 hours can be altered by exposure to electromagnetic waves causing chronic depression or altering sensitivity to various drugs.

Why do we need EMI Filter?

Every daily life, we are exposed to the harmful electromagnetic waves projected by the electric products such as computer monitors, cellular phones, electronic game devices, electric blankets, electric heaters etc. Such electromagnetic waves are generated by almost every electric products and they are not easy to sense by human body but they are detrimental to a certain people who are exposed to the waves for a long period of time. Specially it is harmful for baby, children and patient. So we have invented incredible product for suppressing electromagnetic
Waves. The EMI Filter called SEPA can suppress the generation of electromagnetic waves easily and absolutely.

So just plugging up! SEPA will provide you EMI free zone.

Lab Test : suppression of electromagnetic waves

SEPA has been tested by KTL (Korea Test Laboratory), the most authoritative organization, and also been proven of its quality by leading companies. SEPA suppresses electromagnetic waves of 150KHZ~30MHZ to the level well within the national and international limits.


USA Patents
Patent Certificate
(Auxiliary device for EMI removal)
Patent Certificate
(Inductance element)
Patent Certificate
(Pulse filter)
Patent Certificate
(Element to protect from thunderbolt)
Patent Certificate
Patent Certificate
(Communication cable)
Patent Certificate

Questions asked

How does SEPA suppress electromagnetic waves?
The most fundamental factor that generates electromagnetic waves is the unstable voltage and current. SEPA has an element that suppresses voltage/current changes thereby suppressing the generation of unwanted electromagnetic waves. Like you would purify water with water purifier, EMI filter called SEPA filters electromagnetic waves from the plug.

Does SEPA surely suppress electromagnetic waves from electric products?
SEPA has been tested by KTL (Korea Test Laboratory), the most authoritative organization, and also been proven of its quality by leading companies including Samsung Electronics, Anam Electronic R&D Center, Daewoo Electronics and Sambo TG Computer. SEPA suppresses electromagnetic waves of 150KHZ~30MHZ to the level well within the national and international limits.

Do I have to use SEPA?
Although electromagnetic waves are generated from almost all electric and electronic products around us, we as consumers cannot deal with them effectively. Some EMI filters whether imported or domestic are not EMI certified. SEPA reduces more electromagnetic waves for the EMI certified products. (The EMI mark is attached to the products that conform to the international EMI standard.)

How does SEPA suppress electromagnetic waves that are generated on TV or PC on itself?
SEPA suppresses electromagnetic waves by the impedance-matching method where it suppresses the generation of electromagnetic waves at source (the power socket) regardless of presence of the grounding.

Is it possible to measure electromagnetic waves with a hand-held device (such as Gauss meter also known as the 'beeper')?
Absolutely not! A hand-held device can only measure the electric field and the magnetic field of a product using low frequency band of 10KHZ or lower. Electromagnetic waves in the band of 150KHZ~30MHZ can only be measured with spectrum analyzer (which is very expensive) in a shield room or at an open site. (the statutory requirements)

Why does SEPA suppress electromagnetic waves of 150KHZ~30MHZ in particular?
Most home appliances and electric products at work generate electromagnetic waves of 150KHZ~ 30MHZ and the most electromagnetic waves are generated in this band range. Further, this is the band range that is regulated by law.

How do I know if SEPA is out of order?
There will be no power supply to the product.

Product Image

  • Electromagnetic Waves Absorber

Send an Inquiry to this supplier

Electromagnetic Waves Absorber

Electromagnetic Waves Absorber

Send an Inquiry to this supplier
* From
  To Mr.Lee Yong-jin
Wavetech Co., Ltd.
* Buying Product
- Please enter your specific buying item.
e.g. 42 inch LCD TV, leather executive chair
Category : Other Electrical Equipment
* Messages

Use English only Max. 2000 characters. (Min. 20)


Similar products in other categories :

  • Electrical Equipment & Supplies >
  • Other Electrical Equipment
  • Search

    Browse: Manufacturer Directory Countries China India Korea Premium Suppliers Community Site Map

    About EC21 Contact Us Terms & Conditions Report Item Online Trading Risks Product Listing Policy

    中文 繁體 한국어 日本語 Español Русский Français Deutsch

    Copyright (c)1997-2018 EC21 Inc. All Rights Reserved. EC21 in KoreanChinese

    Business Registry Number: 120-86-03931

    Inquiry Basket ()