Medical power supplies pose special challenges for the designer. We understand how to meet them. Bear’s Danielle Sklepik explains the difference between B-Rated, BF-Rated and CF-Rated supplies and some key design issues you need to know. Learn how access to in-house specialty magnetics production and on-shore manufacturing can offer a huge advantage in cost, time and performance for a custom medical power supply.
Power supplies for medical equipment must comply with IEC/UL 60601-1 3rd edition. Within this standard there are three categories of equipment. B-rated equipment will have only brief contact with a patient – for example an MRI scanner. BF-rated equipment will have routine contact with the skin; for example ultrasound equipment. CF-rated equipment is likely to make direct internal contact with a patient, for example surgical cauterizers, cameras, and measurement devices.
All three categories pose special challenges for the power supply designer, with the CF-Rated category being the most difficult.
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