Switchers satisfy EMC requirements

New series of ultraminiature AC/DC switching power supplies is designed to meet the power and EMC noise performance requirements of a wide range of applications.

Astrodyne Corporation has updated its popular EFM Series of ultraminiature open-frame modular switching power supplies for EMC noise compliance to EN55022, Class B.

Designed for both medical (EFM30/M) instrumentation, and commercial grade (EFM30) industrial control and telecommunication systems, this new series of AC/DC switching power supplies is designed to meet the power and EMC noise performance requirements of a wide range of applications.

The new EFM30 and EFM30/M Series provide an economical power solution and are pinout and size compatible with more costly encapsulated modules.

All models accept universal input from 90-264V AC, and 11 models provide output power of 30W with single, dual and triple outputs from 5 to 48V DC.

The EFM Series features an integral power-good LED indicator and output adjustment potentiometer and will operate over the ambient temperature range of -10 to +50C without forced cooling or output power derating.

All models contain overvoltage and short circuit protection circuitry, and internal input filtering.

The EFM30/M Series is fully approved to UL/EN60601-1 medical safety specifications, and the EFM30 Series is fully approved to UL/EN60950-1 commercial industrial specifications.

The unit's space-saving dimensions are as small as 87 x 60 x 24mm.

All models are RoHS 2002/95/EC compliant and designed for PCB plug-in mounting.

Prices start at US $30 and $35 in OEM quantities for the commercial and medical versions, respectively.

Delivery is stock to 6 weeks ARO.

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