A new introduction from Murata Power Solutions (www.murata-ps.com) is the MVAB120 series of open-frame, single output, 120W power supplies. Useful for a range of telecom and industrial applications, the supplies are up to 91% efficient and offer fan-free operation using convection cooling. The devices come in three output models - 12, 24, and 48 VDC - and they accommodate standard input ranges from 90 to 264 VAC and 120 to 300 VDC. Measuring just 2 × 4 × 1.35 inches (101.6 × 50.8 × 34.3 mm), they satisfy the 1U form factor specs. The MVAB supplies can deliver a full load in the range of -10℃ to 50℃ and include overcurrent, overvoltage, and overtemperature protection. They'll run you up to about $50 to $60 each, depending on quantity.
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