What is EMF testing? What is the difference between EMF and EMC testing?

深圳优耐检测

What is EMF testing? What is the difference between EMF and EMC testing? [Copy link]

What is EMF testing?
Electromagnetic fields (EMF) are electrical derivatives produced by electrical conductors and AC power. EMF surrounds electronic devices when the speed of charged particles changes. When charged electrons gain speed, current is generated and ignites magnetic fields. Measured in Hertz, EMF facilitates fast and easy communication of wireless devices such as smartphones, mobile devices, laptops, etc.

Electric fields are created by voltage differences: the higher the voltage, the stronger the resultant field. Magnetic fields: when current is flowing, the greater the current, the stronger the magnetic field. There is an electric field even when there is no current flowing. If there is current flowing, the magnetic field strength changes with power consumption, but the electric field strength remains constant.

What is EMC testing?
EMC testing, also known as electromagnetic compatibility (EMC), refers to the comprehensive evaluation of the electromagnetic interference (EMI) and anti-interference ability (EMS) of electronic products. It is one of the important indicators of product quality. EMC is mainly for the purpose of ensuring the normal operation of electronic products and studying the impact of noise emitted by electronic products on other electronic products, or whether it is not affected by other electronic products.

The difference between EMC and EMF:
EMF is for the purpose of ensuring personal safety, while the purpose of EMF is to protect the central nervous system tissues of the human head and torso exposed to electromagnetic fields and reduce their adverse effects on the human body. It studies the impact of electric field and magnetic field noise emitted by electronic products on the human body.

The purpose of EMC is to ensure the normal operation of electronic products. It studies the impact of noise emitted by electronic products on other electronic products, or whether they are not affected by other electronic products.

Judging from the EU's increasing requirements for EMF exposure assessments in recent years, its requirements for electronic and electrical equipment have shifted from the traditional "Safety + Electromagnetic Compatibility (EMC)" model to the "Safety + EMC + EMF Human Exposure Assessment" model, fully demonstrating the EU's concern for human health.

Household appliances, lighting equipment, etc. are devices that are widely used and touched by the public in their daily lives. Especially after tailless appliances are put into large-scale use, the problem of EMF human exposure will become increasingly prominent. Assessing the human exposure to electromagnetic fields before the products are put on the market can prompt product manufacturers to take appropriate measures to reduce the risks of equipment to human health and prevent EMF from having adverse effects on human health.

qwqwqw2088

Which national standard is the EMF test based on?

芯片老兵

I have been exposed to EMI but don’t know much about EMF. Thanks for sharing. Are there any national standards?

Verifone

I have only studied EMI and EMC, and I don't know much about EMF. Is there any relevant information and standards that you can share?

小小莫

Mark it, I will use it later for study, hahahahahaha