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New AC/DC Power Supplies For Medical Applications

Abstract:

Michael Schrutka
Michael Schrutka, MSc. AC/DC Product Manager, RECOM

When specifying a built-in AC/DC power supply for a medical application, a product pre-certified to IEC/EN 60601-1 is a safe option. There are however still issues to consider, such as requirements for external fusing and possibly EMI filtering. This article discusses the requirements and introduces some available power supplies that make end product certification easier.

Power supplies for medical applications are in great demand, especially with health crises sweeping the world. With more equipment needed for ventilators, analysers and life support in general, product designers must choose appropriate power supplies that meet the latest medical standards based on IEC 60601-1:2005 and its collateral documents. There are national variants: ANSI/AAMI ES 60601-1:2005 in the US, EN 60601-1:2006 in Europe and yet more round the world, all with local deviations. On the 20th August 2020, IEC 60601- 1 amendment 2 was issued (IEC 60601-1:2005 +A1:2012 + A2:2020). This amendment updates out-of-date references to other standards, aligns the standard more closely with IEC 62368-1 (safety of audio/video, information and communication technology equipment), corrects errors and makes clarifications. Collateral electromagnetic disturbance standard IEC 60601- 1-2 is at edition 4.


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