EMC-EMC on power supplies/Astek

Astek Globe 9Fl-1., No. 428, Chung Hsiao E. Road, Xizhi Dist., New Taipei City, Taiwan

UKCA(UK Conformity Assessed) After the Brexit transition period ends, from January 1, 2021, there is a new safety approvals for switching power supplies and medical adapters/open frames in UK market, when importing to the UK market must comply with the requirements of UKCA (UK Conformity Assessed). UKCA covers most of the current EU CE regulations. The UK market includes England, Wales and Scotland, but excluding Northern Ireland. The UKCA mark is only applicable to the UK which cannot be applied to the European Union, European Economic Area or Northern Ireland market. *UKCA requirements* Under the following conditions, the product shall be with “UKCA” logo from January 1, 2021. • Products sold in the UK • Products within the scope of British law • Must pass a third-party qualification assessment • Those who originally used the UK Notified Body and hasn’t transfer the conformity assessment file to the EU Notified Body before January 1, 2021 The above requirements don’t include the existing inventory entered the UK market before January 1, 2021, regardless of whether the verification is carried out by a UK institution. UKCA, but starting from January 1, 2022, all products need to use the UKCA logo. North Ireland products (unrestricted) CE or CE+UKNI *UK Conformity Assessed, UKCA UK Conformity Assessment* • UKCA (British Conformity Assessment) is a new British product conformity mark, used to show that the product complies with relevant British standards and regulatory requirements. • From January 1, 2021, products sold to the UK market (England, Wales and Scotland, but excluding Northern Ireland) must meet relevant UK standards and regulations before they can use the UKCA mark. The testing standards and verification process are basically the same as the current CE requirements. • The UKCA mark is only applicable to the UK and cannot be applied to the European Union, European Economic Area or Northern Ireland market. Astek Power Supplies and Medical Adapter and Open Frames meet with UKCA approvals. For more information required, please contact info@astekglobe.com. https://www.astekglobe.com/hot_389550.html UKCA(UK Conformity Assessed) 2024-03-10 2025-03-10

Astek Globe 9Fl-1., No. 428, Chung Hsiao E. Road, Xizhi Dist., New Taipei City, Taiwan https://www.astekglobe.com/hot_389550.html

Astek Globe 9Fl-1., No. 428, Chung Hsiao E. Road, Xizhi Dist., New Taipei City, Taiwan https://www.astekglobe.com/hot_389550.html

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EMC (Electromagnetic Compatibility)

EMC is an abbreviation for Electromagnetic Compatibility, which is “no electromagnetic interference to other equipment, even if it is subjected to electromagnetic interference from other equipment and still maintains the original performance”, which is called “electromagnetic compatibility”.

“Do not make the other equipment electromagnetic interference” means this performance shall consciously ensure. EMI (Electromagnetic Interference) is a term that refers to electromagnetic interference. Since the emission of electromagnetic waves causes interference, it is often used in pairs with the term Emission (radiation, emission). In terms of switching power supply, it means switching noise due to on/off operation.

In contrast, the term "even by electromagnetic interference from other devices" is EMS (Electromagnetic Susceptibility) - electromagnetic sensitivity. EMS is often used in pairs with Immunity (tolerance, immunity, and elimination). It is required to have the ability to withstand "no problem such as malfunction even if it is subjected to EMI".CI (Conducted Immunity) and RI (Radiated Immunity) are the categories of EMI.

EMI is divided into Conducted Emission and Radiated Emission. Conducted noise refers to noise transmitted through a wire or PCB layout. Radiation noise refers to the noise emitted (radiated) into the environment. For these noises, there are immunity requirements in the EMS.

Every country always has its own regulation, like CE for Euro, FCC for USA, VCCI for Japan, BSMI for Taiwan. Some are included into the safety approval, like RCM and KC and so on.

For our inquiries about EMC about switching power supplies, please contact us.

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