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Power supplies offer 94% efficiency

Power supplies offer 94% efficiency

Murata has announced the MVAC series of open frame ac/dc power supplies.

Suitable for use in a variety of industrial factory automation, communications and medical equipment, the series comprises two single output models, the 250W MVAC250 and the 400W MVAC400 units.

Both models are optimised to offer a typical efficiency of 94%. They accommodate the universal ac input voltage range from 90 to 264 VAC with active power factor correction and active inrush control. Each model is available with a nominal output voltage of 12, 24 or 50VDC.

The devices come packaged in an industry standard 1U open frame format measuring 127 x 76.2 x 35.56mm. They are said to demonstrate significantly better convection cooled performance characteristics than other competing designs.

Both modules comply with the UL60601-1 3rd edition medical safety standard, as well as the IEC60950/UL60950 safety specifications and EN55022 standard for conducted emissions.

Protection features include over voltage, over current, and over temperature. A remote sense input and power OK signal are provided across the range. Optional droop current sharing allows multiple supplies to be operated in parallel.

Laura Hopperton

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