ROAL Electronics USA Inc. (Los Angeles, CA) introduced a new family of ac-dc switch-mode power supplies for Video LED display applications. The two +12 Vdc and +24 Vdc versions, with two internal fans, provides 1,000 W continuous power at a high and low ac input-voltage range with automatic input voltage selection extended from 90 Vac to 264 Vac at 47 Hz to 63 Hz ac frequency.
The nominal output voltage is 12 Vdc ±2%, from 0 A up to 84 A; or 24 Vdc ±100 mV from 0 A up to 42 A. The output voltage can be adjusted to -5%/+10% through an external potentiometer; total ripple and noise is 0.95 (compliance with EN61000-3-2).
The power supply family has a conformal protective acrylic coating, and is MIL-I-46058C and IPC-CC-830 qualified, which provides moisture and severe environmental protection for the printed circuit aseemblies. Measuring 7.08 in x 11.81 in x 3.54 in (180 mm x 300 mm x 90 mm), the power supply models are priced as low as $225 in medium volumes.