Switching Power Supplies

An AC/DC switching power supply series from Bicker Elektronik, Donauwoerth, Germany, has been developed for space-saving installation in medical devices and medical computer systems. The BEO-3000M The 3 × 5 in. open frame power supplies are available with precisely regulated DC single output voltages of 12, 24, 36, or 48 V, which can be fine-tuned in the range of ±5 percent. In addition, a 5-V standby and a 12-V fan output is available. The medical power supplies provide an output power of 250 W fanless or 300 W with 10 CFM airflow. With a high efficiency of up to 94 percent, a standby power consumption of less than 0.3 W, and an operating temperature range of –40° to +70 °C, the series is also suitable for closed systems.

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Class II Power Supply

Schurter, Santa Rosa, CA, has released a 24 VDC universal switching power supply. The PSUP class II power supply supports the company's range of point and ring illuminated Metal Line switches rated for 24 VDC supply voltage. The power supply processes DC (127–370 VDC) or AC (90–264 VAC, 47–63 Hz) from the input side. A constant 24 VDC, with a power of 8 W, is then available at the output. The housing is completely insulated and is rated IP42 for indoor use. The operating temperatures may vary between –30° and +70 °C. The unit is protected against short circuit, overload, and overvoltage.

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Medical Power Supplies

A line of medical AC/DC switching power supplies is available from Protek Power North America, Hudson MA. The PM651 Series is available in either u-channel style or enclosed with cover/fan. The enclosed version measures 8 × 4 × 2.6 in. and can deliver up to 650 W with 30 CFM forced air cooling. The u-channel version delivers a maximum 380 W with convection cooling. The series accepts an input voltage range of 90–264 VAC and offers a choice of 12 single output models with voltages ranging from 12 to 58 VDC. All models feature BF-rated output, 1,500 VAC from output to earth ground, 100–240 VAC input with active PFC, <300 μA leakage current, and a standby output 5 VDC at 200 mA

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Desktop Power Supplies

XP Power, Singapore, has launched a series of desktop AC-DC power supplies rated at 36, 45, and 65 W. Aimed at the healthcare, the AKM36/AKM45/AKM65 meet the latest U.S. DoE Level VI and EU CoC Tier 2 energy efficiency requirements while offering 2 x MOPP medical-grade isolation and very low no-load power consumption. AC input for all versions is 90–260 VAC for worldwide use and outputs available include 9, 12, 15, 18, 24, 30, 36, and 48 V, depending on version. Class II, earth-free construction is standard on the 36-W version and optional on the 45- and 65-W versions. Input connectors are IEC 320-C8 figure of eight type for class II parts and IEC 320-C14 type when class I is specified.

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