Irwindale, CA: Accepting 50, 60, or 400-Hz input and yielding a fixed 50 or 60-Hz output, ED Series single-phase frequency converters offer precise voltage regulation and line conditioning. In addition, an internal battery backup system delivers true uninterruptible power supply functionality. Converters easily accept wide input variations and remain at their designed voltage and frequency allowing connected equipment to continuously operate during extended brownouts to 88 v ac. Falcon Electric, Inc., (800) 842-6940