Emerson Network Power in Carlsbad, Calif., is introducing a high-efficiency, 100–150 watt AC-DC power supply for information technology equipment (ITE), light industrial systems, and low-power medical, dental, and laboratory applications. The LPS103-M power supply, which measures 2 by 4 inches, and is 1.29 inches high, has ITE and non-patient contact and non-patient critical medical safety approvals. It has a typical full-load efficiency of 88 percent and a power density in excess of 14 watts per cubic inch. The LPS103-M features a universal 85–264 volts AC input, and also operate from a 120–300 volts DC input. The power supply produces a tightly regulated main 12 volts DC output, together with an isolated 12 volts DC fan output; the latter is rated at 1 amp, while the main output can deliver as much as 8.3 amps continuously with convection cooling, or as much as 12.5 amps continuously with 30 CFM forced air cooling. The main output can be adjusted over the range 10.8 to 13.2 volts DC, and remote sense facilities are provided to compensate for a drop of as much as 0.5 volts between the output terminals and the load. Active power factor correction minimizes input harmonic current distortion. The power supply has a maximum safety-ground leakage current of 275 micro-amps, and the main output has a hold-up time of 16 milliseconds minimum when the supply is fed with a 120 volts AC input and is delivering 150 watts of output power. For more information, visit Emerson Network Power online at www.powerconversion.com.
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