XP Power plc today announced the GSP500 series of highly efficient 500-Watt ac-dc power supplies. Occupying a compact 4 x 6 inch footprint these single output forced air cooled units can continuously deliver the full output power across the temperature range of -40 to +50 degrees C and up to +70 degrees C with derating. With its high efficiency design and an almost entirely flat efficiency curve over the whole load range the supply requires just 12 CFM of forced air cooling. The GSP500 can also provide an output power of up to 180 Watts with convection cooling only.
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Measuring 4.00 x 6.00 x 1.67 inches (101.6 x 152.4 x 42.4 mm) and packaged in a U channel chassis mount format, the GSP500 series is available in three single output models providing the nominal outputs of +12-, + 24- or + 48-Vdc. A +12-Vdc / 0.3-A fan output is also provided. An integral end-mounted fan option (-EF) is available to order. Incorporating two 3-speed fans, the fan speed is determined by a combination of internal ambient temperature, input voltage and output load, and ensures acoustic noise is always kept to a minimum. In addition, the unit is designed so the fans will shut down under all input conditions where the load is minimal. This approach helps prolong fan life and also suits medical applications where the end-equipment is located close to patients.
source: http://www.powerpulse.net/story.php?storyID=31211
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